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42 results on '"Szokoly, Gyula P."'

1. The 2008 outburst of EX Lup - silicate crystals in motion

Author

Juhasz, Attila, Dullemond, Cornelis, van Boekel, Roy, Bouwman, Jeroen, Abraham, Peter, Acosta-Pulido, Jose, Henning, Thomas, Kospal, Agnes, Sicilia-Aguilar, Aurora, Jones, Albert, Moor, Attila, Mosoni, Laszlo, Regaly, Zsolt, Szokoly, Gyula, and Sipos, Nikoletta more...

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

EX Lup is the prototype of the EXor class of eruptive young stars. These objects show optical outbursts which are thought to be related to runaway accretion onto the star. In a previous study we observed in-situ crystal formation in the disk of EX Lup during its latest outburst in 2008, making the object an ideal laboratory to investigate circumstellar crystal formation and transport. This outburst was monitored by a campaign of ground-based and Spitzer Space Telescope observations. Here we modeled the spectral energy distribution of EX Lup in the outburst from optical to millimeter wavelengths with a 2D radiative transfer code. Our results showed that the shape of the SED at optical wavelengths was more consistent with a single temperature blackbody than a temperature distribution. We also found that this single temperature component emitted 80-100 % of the total accretion luminosity. We concluded that a thermal instability, the most widely accepted model of EXor outbursts, was likely not the triggering mechanism of the 2008 outburst of EX Lup. Our mid-infrared Spitzer spectra revealed that the strength of all crystalline bands between 8 and 30 um increased right after the end of the outburst. Six months later, however, the crystallinity in the 10 um silicate feature complex decreased. Our modeling of the mid-infrared spectral evolution of EXLup showed that, although vertical mixing should be stronger during the outburst than in the quiescent phase, fast radial transport of crystals (e.g., by stellar/disk wind) was required to reproduce the observed mid-infrared spectra., Comment: Accepted for publication in ApJ, 37 pages, 11 figures, 2 tables more...

Published
2011
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2. An X-ray Selected Galaxy Cluster in the Lockman Hole at Redshift 1.753

Author

Henry, J. Patrick, Salvato, Mara, Finoguenov, Alexis, Bouche, Nicolas, Brunner, Hermann, Burwitz, Vadim, Buschkamp, Peter, Egami, Eiichi, Foerster-Schreiber, Natasha, Fotopoulou, Sotiria, Genzel, Reinhard, Hassinger, Guenther, Mainieri, Vincenzo, Rovilos, Manolis, and Szokoly, Gyula more...

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We have discovered an X-ray selected galaxy cluster with a spectroscopic redshift of 1.753. The redshift is of the brightest cluster galaxy (BCG), which is coincident with the peak of the X-ray surface brightness. We also have concordant photometric redshifts for seven additional candidate cluster members. The X-ray luminosity of the cluster is 3.68 +/- 0.70 x 10^43 erg s^-1 in the 0.1 - 2.4 keV band. The optical/IR properties of the BCG imply its formation redshift was ~5 if its stars formed in a short burst. This result continues the trend from lower redshift in which the observed properties of BCGs are most simply explained by a monolithic collapse at very high redshift instead of the theoretically preferred gradual hierarchical assembly at later times. However the models corresponding to different formation redshifts are more clearly separated as our observation epoch approaches the galaxy formation epoch. Although our infrared photometry is not deep enough to define a red sequence, we do identify a few galaxies at the cluster redshift that have the expected red sequence photometric properties., Comment: 18 pages, 8 figures, accepted for publication in the Astrophysical Journal more...

Published
2010
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3. Robust quantitative measures of cluster X-ray morphology, and comparisons between cluster characteristics

Author

Hashimoto, Yasuhiro, Boehringer, Hans, Henry, J. Patrick, Hasinger, Guenther, and Szokoly, Gyula

Subjects
Astrophysics
Abstract

To investigate the relationships between dynamical status and other important characteristics of galaxy clusters, we conducted a study of X-ray cluster morphology using a sample of 101 clusters at redshift z=0.05-1 taken from the Chandra archive. The X-ray morphology is quantitatively characterized by a series of objectively measured simple statistics of the X-ray surface brightness distribution, which are designed to be robust against variations of image quality caused by various exposure times and various cluster redshifts. We found: (1) The distorted and non-distorted clusters occupy well-defined loci in the L-T plane, demonstrating the measurements of the global luminosity and temperature for distorted clusters should be interpreted with caution, or alternatively, a rigorous morphological characterization is necessary when we use a sample of clusters with heterogeneous morphological characteristics to investigate the L-T or other related scaling relations. (2) Ellipticity and Off-center show no evolutionary effects between high and low redshift cluster subsets, while there may be a hint of weak evolutions for the Concentration and Asymmetry, in such a way that high-z clusters show more distorted morphology. (3) No correlation is found between X-ray morphology and X-ray luminosity or X-ray morphology and X-ray temperature of clusters, implying that interaction of clusters may not enhance or decrease the luminosity or temperature of clusters for extended period of time., Comment: Accepted for publication in A&A. 16 pages, 18 figures more...

Published
2006
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4. Active Galactic Nuclei in the Sloan Digital Sky Survey: II. Emission-Line Luminosity Function

Author

Hao, Lei, Strauss, Michael A., Fan, Xiaohui, Tremonti, Christy A., Schlegel, David J., Heckman, Timothy M., Kauffmann, Guinevere, Blanton, Michael R., Gunn, James E., Hall, Patrick B., Ivezić, Željko, Knapp, Gillian R., Krolik, Julian H., Lupton, Robert H., Richards, Gordon T., Schneider, Donald P., Strateva, Iskra V., Zakamska, Nadia L., Brinkmann, J., Brunner, Robert J., and Szokoly, Gyula P. more...

Subjects
Astrophysics
Abstract

The emission line luminosity function of active galactic nuclei (AGN) is measured from about 3000 AGN included in the main galaxy sample of the Sloan Digital Sky Survey within a redshift range of $0 more...

Published
2005
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5. Active Galactic Nuclei in the Sloan Digital Sky Survey: I. Sample Selection

Author

Hao, Lei, Strauss, Michael A., Tremonti, Christy A., Schlegel, David J., Heckman, Timothy M., Kauffmann, Guinevere, Blanton, Michael R., Fan, Xiaohui, Gunn, James E., Hall, Patrick B., Ivezić, Željko, Knapp, Gillian R., Krolik, Julian H., Lupton, Robert H., Richards, Gordon T., Schneider, Donald P., Strateva, Iskra V., Zakamska, Nadia L., Brinkmann, J., Brunner, Robert J., and Szokoly, Gyula P. more...

Subjects
Astrophysics
Abstract

We have compiled a large sample of low-redshift active galactic nuclei (AGN) identified via their emission line characteristics from the spectroscopic data of the Sloan Digital Sky Survey. Since emission lines are often contaminated by stellar absorption lines, we developed an objective and efficient method of subtracting the stellar continuum from every galaxy spectrum before making emission line measurements. The distribution of the measured H$\alpha$ Full Width at Half Maxima values of emission line galaxies is strongly bimodal, with two populations separated at about 1,200km s$^{-1}$. This feature provides a natural separation between narrow-line and broad-line AGN. The narrow-line AGN are identified using standard emission line ratio diagnostic diagrams. 1,317 broad-line and 3,074 narrow-line AGN are identified from about 100,000 galaxy spectra selected over 1151 square degrees. This sample is used in a companion paper to determine the emission-line luminosity function of AGN., Comment: High-res version at http://isc.astro.cornell.edu/~haol/agn/paper1.pdf . 29 pages; To appear in AJ (April 2005). See astro-ph/0501042 for Paper II more...

Published
2005
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6. Dust Reddening in SDSS Quasars

Author

Hopkins, Philip F., Strauss, Michael A., Hall, Patrick B., Richards, Gordon T., Cooper, Ariana S., Schneider, Donald P., Berk, Daniel E. Vanden, Jester, Sebastian, Brinkmann, J., and Szokoly, Gyula P. more...

Subjects
Astrophysics
Abstract

We explore the form of extragalactic reddening toward quasars using a sample of 9566 quasars with redshifts 0 survey="" (sdss).="" we="" confirm="" that="" dust="" reddening="" is="" primary="" explanation="" for="" red="" ``tail''="" of="" color="" distribution="" sdss="" quasars.="" our="" fitting="" to="" 5-band="" photometry="" normalized="" by="" modal="" quasar="" as="" a="" function="" redshift="" shows="" this="" well="" described="" smc-like="" but="" not="" lmc-like,="" galactic,="" or="" gaskell="" et="" al.="" (2004)="" reddening.="" extension="" longer="" wavelengths="" using="" subset="" 1886="" sdss-2mass="" matches="" confirms="" these="" results="" at="" high="" significance.="" carry="" out="" monte-carlo="" simulations="" match="" observed="" spectral="" energy="" distributions="" lorentzian="" distribution;="" 2%="" quasars="" selected="" main="" targeting="" algorithm="" (i.e.,="" which="" are="" extincted="" sample)="" have="" e_{b-v}=""> 0.1; less than 1% have E_{B-V} > 0.2, where the extinction is relative to quasars with modal colors. Reddening is uncorrelated with the presence of intervening narrow-line absorption systems, but reddened quasars are much more likely to show narrow absorption at the redshift of the quasar than are unreddened quasars. Thus the reddening towards quasars is dominated by SMC-like dust at the quasar redshift., Comment: 29 pages including 8 figures. AJ, September 2004 issue more...

Published
2004
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7. The X-Ray Derived Cosmological Star Formation History and the Galaxy X-Ray Luminosity Functions in the Chandra Deep Fields North and South

Author

Norman, Colin, Ptak, Andrew, Hornschemeier, Ann, Hasinger, Guenther, Bergeron, Jacqueline, Comastri, Andrea, Giacconi, Riccardo, Gilli, Roberto, Glazebrook, Karl, Heckman, Tim, Kewley, Lisa, Ranalli, Piero, Rosati, Piero, Szokoly, Gyula, Tozzi, Paolo, Wang, JunXian, Zheng, Wei, and Zirm, Andrew more...

Subjects
Astrophysics
Abstract

The cosmological star formation rate in the combined Chandra Deep Fields North and South is derived from our X-Ray Luminosity Function for Galaxies in these Deep Fields. Mild evolution is seen up to redshift order unity with SFR ~ (1 + z)^{2.7}. This is the first directly observed normal star-forming galaxy X-ray luminosity function (XLF) at cosmologically interesting redshifts (z>0). This provides the most direct measure yet of the X-ray derived cosmic star-formation history of the Universe. We make use of Bayesian statistical methods to classify the galaxies and the two types of AGN, finding the most useful discriminators to be the X-ray luminosity, X-ray hardness ratio, and X-ray to optical flux ratio. There is some residual AGN contamination in the sample at the bright end of the luminosity function. Incompleteness slightly flattens the XLF at the faint end of the luminosity function. The XLF has a lognormal distribution and agrees well with the radio and infrared luminosity functions. However, the XLF does not agree with the Schechter luminosity function for the H-alpha LF indicating that additional and different physical processes may be involved in the establishment of the lognormal form of the XLF. The agreement of our star formation history points with the other star formation determinations in different wavebands (IR, Radio, H-alpha) gives an interesting constraint on the IMF, and X-rays may be measuring directly the binary star formation history of the Universe. X-ray studies will continue to be useful for probing the star formation history of the universe by avoiding problems of obscuration. Star formation may therefore be measured in more detail by deep surveys with future x-ray missions., Comment: Accepted for publication in ApJ. 19 pages with 10 figures formatted with emulateapj. Version with B/W only figures available at http://www.pha.jhu.edu/~ptak/papers more...

Published
2004
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8. The Cut & Enhance method : selecting clusters of galaxies from the SDSS commissioning data

Author

Goto, Tomotsugu, Sekiguchi, Maki, Nichol, Robert C., Bahcall, Neta A., Kim, Rita S. J., Annis, James, Ivezic, Zeljko, Brinkmann, J., Hennessy, Gregory S., Szokoly, Gyula P., and Tucker, Douglas L.

Subjects
Astrophysics
Abstract

We describe an automated method, the Cut & Enhance method (CE) for detecting clusters of galaxies in multi-color optical imaging surveys. This method uses simple color cuts, combined with a density enhancement algorithm, to up-weight pairs of galaxies that are close in both angular separation and color. The method is semi-parametric since it uses minimal assumptions about cluster properties in order to minimize possible biases. No assumptions are made about the shape of clusters, their radial profile or their luminosity function. The method is successful in finding systems ranging from poor to rich clusters of galaxies, of both regular and irregular shape. We determine the selection function of the CE method via extensive Monte Carlo simulations which use both the real, observed background of galaxies and a randomized background of galaxies. We use position shuffled and color shuffled data to perform the false positive test. We have also visually checked all the clusters detected by the CE method. We apply the CE method to the 350 deg^2 of the SDSS (Sloan Digital Sky Survey) commissioning data and construct a SDSS CE galaxy cluster catalog with an estimated redshift and richness for each cluster. The CE method is compared with other cluster selection methods used on SDSS data such as the Matched Filter (Postman et al. 1996, Kim et al. 2001), maxBCG technique (Annis et al. 2001) and Voronoi Tessellation (Kim et al. 2001). The CE method can be adopted for cluster selection in any multi-color imaging surveys., Comment: 62 pages, 32 figures, Accepted for publication in the Astronomical Journal, "the CE galaxy cluster catalog can be downloaded from, http://astrophysics.phys.cmu.edu/~tomo/ce/ " more...

Published
2001
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9. Photometric redshifts from reconstructed QSO templates

Author

Budavari, Tamas, Csabai, Istvan, Szalay, Alexander S., Connolly, Andrew J., and Szokoly, Gyula P.

Subjects
Astrophysics
Abstract

From SDSS commissioning photometric and spectroscopic data, we investigate the utility of photometric redshift techniques to the task of estimating QSO redshifts. We consider empirical methods (e.g. nearest-neighbor searches and polynomial fitting), standard spectral template fitting and hybrid approaches (i.e. training spectral templates from spectroscopic and photometric observations of QSOs). We find that in all cases, due to the presence of strong emission-lines within the QSO spectra, the nearest-neighbor and template fitting methods are superior to the polynomial fitting approach. Applying a novel reconstruction technique, we can, from the SDSS multicolor photometry, reconstruct a statistical representation of the underlying SEDs of the SDSS QSOs. Although, the reconstructed templates are based on only broadband photometry the common emission lines present within the QSO spectra can be recovered in the resulting spectral energy distributions. The technique should be useful in searching for spectral differences among QSOs at a given redshift, in searching for spectral evolution of QSOs, in comparing photometric redshifts for objects beyond the SDSS spectroscopic sample with those in the well calibrated photometric redshifts for objects brighter than 20th magnitude and in searching for systematic and time variable effects in the SDSS broad band photometric and spectral photometric calibrations., Comment: 21 pages, 9 figures, LaTeX AASTeX, submitted to AJ more...

Published
2001
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10. The Third Data Release of the Sloan Digital Sky Survey

Author

Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel Andre, Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, Bahcall, Neta A., Baldry, Ivan K., Bastian, Steven, Berlind, Andreas, Bernardi, Mariangela, Blanton, Michael R., Bochanski, John J., Boroski, William N., Brewington, Howard J., Briggs, John W., Brinkmann, J., Brunner, Robert J., Budavári, Tamás, Carey, Larry N., Castander, Francisco J., Connolly, A. J., Covey, Kevin R., Csabai, István, Dalcanton, Julianne J., Doi, Mamoru, Dong, Feng, Eisenstein, Daniel J., Evans, Michael L., Fan, Xiaohui, Finkbeiner, Douglas P., Friedman, Scott D., Frieman, Joshua A., Fukugita, Masataka, Gillespie, Bruce, Glazebrook, Karl, Gray, Jim, Grebel, Eva K., Gunn, James E., Gurbani, Vijay K., Hall, Patrick B., Hamabe, Masaru, Harris, Frederick H., Harris, Hugh C., Harvanek, Michael, Heckman, Timothy M., Hendry, John S., Hennessy, Gregory S., Hindsley, Robert B., Hogan, Craig J., Hogg, David W., Holmgren, Donald J., Holtzman, Jon A., Ichikawa, Shin-Ichi, Ichikawa, Takashi, Ivezić, Željko, Jester, Sebastian, Johnston, David E., Jorgensen, Anders M., Jurić, Mario, Kent, Stephen M., Kleinman, S. J., Knapp, G. R., Kniazev, Alexei Yu., Kron, Richard G., Krzesiński, Jurek, Lamb, Donald Q., Lampeitl, Hubert, Lee, Brian C., Lin, Huan, Long, Daniel C., Loveday, Jon, Lupton, Robert H., Mannery, Ed, Margon, Bruce, Martínez-Delgado, David, Matsubara, Takahiko, McGehee, Peregrine M., McKay, Timothy A., Meiksin, Avery, Ménard, Brice, Munn, Jeffrey A., Nash, Thomas, Neilsen, Eric H., Newberg, Heidi Jo, Newman, Peter R., Nichol, Robert C., Nicinski, Tom, Nieto-Santisteban, Maria, Nitta, Atsuko, Okamura, Sadanori, O'Mullane, William, Owen, Russell, Padmanabhan, Nikhil, Pauls, George, Peoples, John, Pier, Jeffrey R., Pope, Adrian C., Pourbaix, Dimitri, Quinn, Thomas R., Raddick, M. Jordan, Richards, Gordon T., Richmond, Michael W., Rix, Hans-Walter, Rockosi, Constance M., Schlegel, David J., Schneider, Donald P., Schroeder, Joshua, Scranton, Ryan, Sekiguchi, Maki, Sheldon, Erin, Shimasaku, Kazu, Silvestri, Nicole M., Smith, J. Allyn, Smolčić, Vernesa, Snedden, Stephanie A., Stebbins, Albert, Stoughton, Chris, Strauss, Michael A., SubbaRao, Mark, Szalay, Alexander S., Szapudi, István, Szkody, Paula, Szokoly, Gyula P., Tegmark, Max, Teodoro, Luis, Thaka, Aniruddha R., Tremonti, Christy, Tucker, Douglas L., Uomoto, Alan, Vanden Berk, Daniel E., Vandenberg, Jan, Vogeley, Michael S., Voges, Wolfgang, Vogt, Nicole P., Walkowicz, Lucianne M., Wang, Shu-I, Weinberg, David H., West, Andrew A., White, Simon D. M., Wilhite, Brian C., Xu, Yongzhong, Yanny, Brian, Yasuda, Naoki, Yip, Ching-Wa, Yocum, D. R., York, Donald G., Zehavi, Idit, Zibetti, Stefano, and Zucker, Daniel B. more...

Subjects
Imaging systems in astronomy, Stars--Observations, Astronomy, Astrophysics
Abstract

This paper describes the Third Data Release of the Sloan Digital Sky Survey (SDSS). This release, containing data taken up through 2003 June, includes imaging data in five bands over 5282 deg², photometric and astrometric catalogs of the 141 million objects detected in these imaging data, and spectra of 528,640 objects selected over 4188 deg². The pipelines analyzing both images and spectroscopy are unchanged from those used in our Second Data Release. more...

Published
2005
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11. The Second Data Release of the Sloan Digital Sky Survey

Author

Abazajian, Kevork, Adelman-McCarthy, Jennifer K., Agüeros, Marcel Andre, Allam, Sahar S., Anderson, Kurt S. J., Anderson, Scott F., Annis, James, Bahcall, Neta A., Baldry, Ivan K., Bastian, Steven, Berlind, Andreas, Bernardi, Mariangela, Blanton, Michael R., Bochanski, John J., Boroski, William N., Briggs, John W., Brinkmann, J., Brunner, Robert J., Budavári, Tamás, Carey, Larry N., Carliles, Samuel, Castander, Francisco J., Connolly, A. J., Csabai, István, Doi, Mamoru, Dong, Feng, Eisenstein, Daniel J., Evans, Michael L., Fan, Xiaohui, Finkbeiner, Douglas P., Friedman, Scott D., Frieman, Joshua A., Fukugita, Masataka, Gal, Roy R., Gillespie, Bruce, Glazebrook, Karl, Gray, Jim, Grebel, Eva K., Gunn, James E., Gurbani, Vijay K., Hall, Patrick B., Hamabe, Masaru, Harris, Frederick H., Harris, Hugh C., Harvanek, Michael, Heckman, Timothy M., Hendry, John S., Hennessy, Gregory S., Hindsley, Robert B., Hogan, Craig J., Hogg, David W., Holmgren, Donald J., Ichikawa, Shin-Ichi, Ichikawa, Takashi, Ivezić, Željko, Jester, Sebastian, Johnston, David E., Jorgensen, Anders M., Kent, Stephen M., Kleinman, S. J., Knapp, G. R., Kniazev, Alexei Yu., Kron, Richard G., Krzesiński, Jurek, Kunszt, Peter Z., Kuropatkin, Nickolai, Lamb, Donald Q., Lampeitl, Hubert, Lee, Brian C., Leger, R. French, Li, Nolan, Lin, Huan, Loh, Yeong-Shang, Long, Daniel C., Loveday, Jon, Lupton, Robert H., Malik, Tanu, Margon, Bruce, Matsubara, Takahiko, McGehee, Peregrine M., McKay, Timothy A., Meiksin, Avery, Munn, Jeffrey A., Nakajima, Reiko, Nash, Thomas, Neilsen, Eric H., Newberg, Heidi Jo, Newman, Peter R., Nichol, Robert C., Nicinski, Tom, Nieto-Santisteban, Maria, Nitta, Atsuko, Okamura, Sadanori, O'Mullane, William, Ostriker, Jeremiah P., Owen, Russell, Padmanabhan, Nikhil, Peoples, John, Pier, Jeffrey R., Pope, Adrian C., Quinn, Thomas R., Richards, Gordon T., Richmond, Michael W., Rix, Hans-Walter, Rockosi, Constance M., Schlegel, David J., Schneider, Donald P., Scranton, Ryan, Sekiguchi, Maki, Seljak, Uroš, Sergey, Gary, Sesar, Branimir, Sheldon, Erin, Shimasaku, Kazu, Siegmund, Walter A., Silvestri, Nicole M., Sirko, Edwin, Smith, J. Allyn, Smolčić, Vernesa, Snedden, Stephanie A., Stebbins, Albert, Stoughton, Chris, Strauss, Michael A., SubbaRao, Mark, Szalay, Alexander S., Szapudi, István, Szkody, Paula, Szokoly, Gyula P., Tegmark, Max, Teodoro, Luis, Thaka, Aniruddha R., Tremonti, Christy, Tucker, Douglas L., Uomoto, Alan, Vanden Berk, Daniel E., Vandenberg, Jan, Vogeley, Michael S., Voges, Wolfgang, Vogt, Nicole P., Walkowicz, Lucianne M., Wang, Shu-I, Weinberg, David H., West, Andrew A., White, Simon D. M., Wilhite, Brian C., Xu, Yongzhong, Yanny, Brian, Yasuda, Naoki, Yip, Ching-Wa, Yocum, D. R., York, Donald G., Zehavi, Idit, Zibetti, Stefano, and Zucker, Daniel B. more...

Subjects
Imaging systems in astronomy, Stars--Observations, Astronomy, Astrophysics
Abstract

The Sloan Digital Sky Survey (SDSS) has validated and made publicly available its Second Data Release. This data release consists of 3324 deg² of five-band (ugriz) imaging data with photometry for over 88 million unique objects, 367,360 spectra of galaxies, quasars, stars, and calibrating blank sky patches selected over 2627 deg² of this area, and tables of measured parameters from these data. The imaging data reach a depth of r ≈ 22.2 (95% completeness limit for point sources) and are photometrically and astrometrically calibrated to 2% rms and 100 mas rms per coordinate, respectively. The imaging data have all been processed through a new version of the SDSS imaging pipeline, in which the most important improvement since the last data release is fixing an error in the model fits to each object. The result is that model magnitudes are now a good proxy for point-spread function magnitudes for point sources, and Petrosian magnitudes for extended sources. The spectroscopy extends from 3800 to 9200 Å at a resolution of 2000. The spectroscopic software now repairs a systematic error in the radial velocities of certain types of stars and has substantially improved spectrophotometry. All data included in the SDSS Early Data Release and First Data Release are reprocessed with the improved pipelines and included in the Second Data Release. Further characteristics of the data are described, as are the data products themselves and the tools for accessing them. more...

Published
2004
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12. Active Galactic Nuclei in the Sloan Digital Sky Survey. II. Emission-Line Luminosity Function

Author

Hao, Lei, primary, Strauss, Michael A., additional, Fan, Xiaohui, additional, Tremonti, Christy A., additional, Schlegel, David J., additional, Heckman, Timothy M., additional, Kauffmann, Guinevere, additional, Blanton, Michael R., additional, Gunn, James E., additional, Hall, Patrick B., additional, Ivezić, Željko, additional, Knapp, Gillian R., additional, Krolik, Julian H., additional, Lupton, Robert H., additional, Richards, Gordon T., additional, Schneider, Donald P., additional, Strateva, Iskra V., additional, Zakamska, Nadia L., additional, Brinkmann, J., additional, and Szokoly, Gyula P., additional more...

Published
2005
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13. Active Galactic Nuclei in the Sloan Digital Sky Survey. I. Sample Selection

Author

Hao, Lei, primary, Strauss, Michael A., additional, Tremonti, Christy A., additional, Schlegel, David J., additional, Heckman, Timothy M., additional, Kauffmann, Guinevere, additional, Blanton, Michael R., additional, Fan, Xiaohui, additional, Gunn, James E., additional, Hall, Patrick B., additional, Ivezić, Željko, additional, Knapp, Gillian R., additional, Krolik, Julian H., additional, Lupton, Robert H., additional, Richards, Gordon T., additional, Schneider, Donald P., additional, Strateva, Iskra V., additional, Zakamska, Nadia L., additional, Brinkmann, J., additional, Brunner, Robert J., additional, and Szokoly, Gyula P., additional more...

Published
2005
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14. The Third Data Release of the Sloan Digital Sky Survey

Author

Abazajian, Kevork, primary, Adelman-McCarthy, Jennifer K., additional, Agüeros, Marcel A., additional, Allam, Sahar S., additional, Anderson, Kurt S. J., additional, Anderson, Scott F., additional, Annis, James, additional, Bahcall, Neta A., additional, Baldry, Ivan K., additional, Bastian, Steven, additional, Berlind, Andreas, additional, Bernardi, Mariangela, additional, Blanton, Michael R., additional, Bochanski, Jr., John J., additional, Boroski, William N., additional, Brewington, Howard J., additional, Briggs, John W., additional, Brinkmann, J., additional, Brunner, Robert J., additional, Budavári, Tamás, additional, Carey, Larry N., additional, Castander, Francisco J., additional, Connolly, A. J., additional, Covey, Kevin R., additional, Csabai, István, additional, Dalcanton, Julianne J., additional, Doi, Mamoru, additional, Dong, Feng, additional, Eisenstein, Daniel J., additional, Evans, Michael L., additional, Fan, Xiaohui, additional, Finkbeiner, Douglas P., additional, Friedman, Scott D., additional, Frieman, Joshua A., additional, Fukugita, Masataka, additional, Gillespie, Bruce, additional, Glazebrook, Karl, additional, Gray, Jim, additional, Grebel, Eva K., additional, Gunn, James E., additional, Gurbani, Vijay K., additional, Hall, Patrick B., additional, Hamabe, Masaru, additional, Harbeck, Daniel, additional, Harris, Frederick H., additional, Harris, Hugh C., additional, Harvanek, Michael, additional, Hawley, Suzanne L., additional, Hayes, Jeffrey, additional, Heckman, Timothy M., additional, Hendry, John S., additional, Hennessy, Gregory S., additional, Hindsley, Robert B., additional, Hogan, Craig J., additional, Hogg, David W., additional, Holmgren, Donald J., additional, Holtzman, Jon A., additional, Ichikawa, Shin-ichi, additional, Ichikawa, Takashi, additional, Ivezić, Željko, additional, Jester, Sebastian, additional, Johnston, David E., additional, Jorgensen, Anders M., additional, Jurić, Mario, additional, Kent, Stephen M., additional, Kleinman, S. J., additional, Knapp, G. R., additional, Kniazev, Alexei Yu., additional, Kron, Richard G., additional, Krzesinski, Jurek, additional, Lamb, Donald Q., additional, Lampeitl, Hubert, additional, Lee, Brian C., additional, Lin, Huan, additional, Long, Daniel C., additional, Loveday, Jon, additional, Lupton, Robert H., additional, Mannery, Ed, additional, Margon, Bruce, additional, Martínez-Delgado, David, additional, Matsubara, Takahiko, additional, McGehee, Peregrine M., additional, McKay, Timothy A., additional, Meiksin, Avery, additional, Ménard, Brice, additional, Munn, Jeffrey A., additional, Nash, Thomas, additional, Neilsen, Jr., Eric H., additional, Newberg, Heidi Jo, additional, Newman, Peter R., additional, Nichol, Robert C., additional, Nicinski, Tom, additional, Nieto-Santisteban, Maria, additional, Nitta, Atsuko, additional, Okamura, Sadanori, additional, O'Mullane, William, additional, Owen, Russell, additional, Padmanabhan, Nikhil, additional, Pauls, George, additional, Peoples, John, additional, Pier, Jeffrey R., additional, Pope, Adrian C., additional, Pourbaix, Dimitri, additional, Quinn, Thomas R., additional, Raddick, M. Jordan, additional, Richards, Gordon T., additional, Richmond, Michael W., additional, Rix, Hans-Walter, additional, Rockosi, Constance M., additional, Schlegel, David J., additional, Schneider, Donald P., additional, Schroeder, Joshua, additional, Scranton, Ryan, additional, Sekiguchi, Maki, additional, Sheldon, Erin, additional, Shimasaku, Kazu, additional, Silvestri, Nicole M., additional, Smith, J. Allyn, additional, Smolčić, Vernesa, additional, Snedden, Stephanie A., additional, Stebbins, Albert, additional, Stoughton, Chris, additional, Strauss, Michael A., additional, SubbaRao, Mark, additional, Szalay, Alexander S., additional, Szapudi, István, additional, Szkody, Paula, additional, Szokoly, Gyula P., additional, Tegmark, Max, additional, Teodoro, Luis, additional, Thakar, Aniruddha R., additional, Tremonti, Christy, additional, Tucker, Douglas L., additional, Uomoto, Alan, additional, Vanden Berk, Daniel E., additional, Vandenberg, Jan, additional, Vogeley, Michael S., additional, Voges, Wolfgang, additional, Vogt, Nicole P., additional, Walkowicz, Lucianne M., additional, Wang, Shu-i, additional, Weinberg, David H., additional, West, Andrew A., additional, White, Simon D. M., additional, Wilhite, Brian C., additional, Xu, Yongzhong, additional, Yanny, Brian, additional, Yasuda, Naoki, additional, Yip, Ching-Wa, additional, Yocum, D. R., additional, York, Donald G., additional, Zehavi, Idit, additional, Zibetti, Stefano, additional, and Zucker, Daniel B., additional more...

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2005
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16. Sloan Digital Sky Survey Imaging of Low Galactic Latitude Fields: Technical Summary and Data Release

Author

Finkbeiner, Douglas P., primary, Padmanabhan, Nikhil, additional, Schlegel, David J., additional, Carr, Michael A., additional, Gunn, James E., additional, Rockosi, Constance M., additional, Sekiguchi, Maki, additional, Lupton, Robert H., additional, Knapp, G. R., additional, Ivezić, Željko, additional, Blanton, Michael R., additional, Hogg, David W., additional, Adelman-McCarthy, Jennifer K., additional, Annis, James, additional, Hayes, Jeffrey, additional, Kinney, Ellynne, additional, Long, Daniel C., additional, Seljak, Uroš, additional, Strauss, Michael A., additional, Yanny, Brian, additional, Agüeros, Marcel A., additional, Allam, Sahar S., additional, Anderson, Scott F., additional, Bahcall, Neta A., additional, Baldry, Ivan K., additional, Bernardi, Mariangela, additional, Boroski, William N., additional, Briggs, John W., additional, Brinkmann, J., additional, Brunner, Robert J., additional, Budavári, Tamás, additional, Castander, Francisco J., additional, Covey, Kevin R., additional, Csabai, István, additional, Doi, Mamoru, additional, Dong, Feng, additional, Eisenstein, Daniel J., additional, Fan, Xiaohui, additional, Friedman, Scott D., additional, Fukugita, Masataka, additional, Gillespie, Bruce, additional, Grebel, Eva K., additional, Gurbani, Vijay K., additional, de Haas, Ernst, additional, Harris, Frederick H., additional, Hendry, John S., additional, Hennessy, Gregory S., additional, Jester, Sebastian, additional, Johnston, David E., additional, Jorgensen, Anders M., additional, Jurić, Mario, additional, Kent, Stephen M., additional, Kniazev, Alexei Yu., additional, Krzesiński, Jurek, additional, Leger, R. French, additional, Lin, Huan, additional, Loveday, Jon, additional, Mannery, Ed, additional, Martínez-Delgado, David, additional, McGehee, Peregrine M., additional, Meiksin, Avery, additional, Munn, Jeffrey A., additional, Neilsen, Jr., Eric H., additional, Newman, Peter R., additional, Nitta, Atsuko, additional, Pauls, George, additional, Quinn, Thomas R., additional, Rafikov, R. R., additional, Richards, Gordon T., additional, Richmond, Michael W., additional, Schneider, Donald P., additional, Schroeder, Joshua, additional, Shimasaku, Kazu, additional, Siegmund, Walter A., additional, Smith, J. Allyn, additional, Snedden, Stephanie A., additional, Stebbins, Albert, additional, Szalay, Alexander S., additional, Szokoly, Gyula P., additional, Tegmark, Max, additional, Tucker, Douglas L., additional, Uomoto, Alan, additional, Vanden Berk, Daniel E., additional, Weinberg, David H., additional, West, Andrew A., additional, Yasuda, Naoki, additional, Yocum, D. R., additional, York, Donald G., additional, and Zehavi, Idit, additional more...

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2004
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17. Dust Reddening in Sloan Digital Sky Survey Quasars

Author

Hopkins, Philip F., primary, Strauss, Michael A., additional, Hall, Patrick B., additional, Richards, Gordon T., additional, Cooper, Ariana S., additional, Schneider, Donald P., additional, Vanden Berk, Daniel E., additional, Jester, Sebastian, additional, Brinkmann, J., additional, and Szokoly, Gyula P., additional more...

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2004
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18. A Survey ofz > 5.7 Quasars in the Sloan Digital Sky Survey. III. Discovery of Five Additional Quasars

Author

Fan, Xiaohui, primary, Hennawi, Joseph F., additional, Richards, Gordon T., additional, Strauss, Michael A., additional, Schneider, Donald P., additional, Donley, Jennifer L., additional, Young, Jason E., additional, Annis, James, additional, Lin, Huan, additional, Lampeitl, Hubert, additional, Lupton, Robert H., additional, Gunn, James E., additional, Knapp, Gillan R., additional, Brandt, W. N., additional, Anderson, Scott, additional, Bahcall, Neta A., additional, Brinkmann, Jon, additional, Brunner, Robert J., additional, Fukugita, Masataka, additional, Szalay, Alexander S., additional, Szokoly, Gyula P., additional, and York, Donald G., additional more...

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2004
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19. The Second Data Release of the Sloan Digital Sky Survey

Author

Abazajian, Kevork, primary, Adelman-McCarthy, Jennifer K., additional, Agüeros, Marcel A., additional, Allam, Sahar S., additional, Anderson, Kurt, S. J., additional, Anderson, Scott F., additional, Annis, James, additional, Bahcall, Neta A., additional, Baldry, Ivan K., additional, Bastian, Steven, additional, Berlind, Andreas, additional, Bernardi, Mariangela, additional, Blanton, Michael R., additional, Bochanski, Jr., John J., additional, Boroski, William N., additional, Briggs, John W., additional, Brinkmann, J., additional, Brunner, Robert J., additional, Budavári, Tamás, additional, Carey, Larry N., additional, Carliles, Samuel, additional, Castander, Francisco J., additional, Connolly, A. J., additional, Csabai, István, additional, Doi, Mamoru, additional, Dong, Feng, additional, Eisenstein, Daniel J., additional, Evans, Michael L., additional, Fan, Xiaohui, additional, Finkbeiner, Douglas P., additional, Friedman, Scott D., additional, Frieman, Joshua A., additional, Fukugita, Masataka, additional, Gal, Roy R., additional, Gillespie, Bruce, additional, Glazebrook, Karl, additional, Gray, Jim, additional, Grebel, Eva K., additional, Gunn, James E., additional, Gurbani, Vijay K., additional, Hall, Patrick B., additional, Hamabe, Masaru, additional, Harris, Frederick H., additional, Harris, Hugh C., additional, Harvanek, Michael, additional, Heckman, Timothy M., additional, Hendry, John S., additional, Hennessy, Gregory S., additional, Hindsley, Robert B., additional, Hogan, Craig J., additional, Hogg, David W., additional, Holmgren, Donald J., additional, Ichikawa, Shin-ichi, additional, Ichikawa, Takashi, additional, Ivezić, Željko, additional, Jester, Sebastian, additional, Johnston, David E., additional, Jorgensen, Anders M., additional, Kent, Stephen M., additional, Kleinman, S. J., additional, Knapp, G. R., additional, Kniazev, Alexei Yu., additional, Kron, Richard G., additional, Krzesinski, Jurek, additional, Kunszt, Peter Z., additional, Kuropatkin, Nickolai, additional, Lamb, Donald Q., additional, Lampeitl, Hubert, additional, Lee, Brian C., additional, Leger, R. French, additional, Li, Nolan, additional, Lin, Huan, additional, Loh, Yeong-Shang, additional, Long, Daniel C., additional, Loveday, Jon, additional, Lupton, Robert H., additional, Malik, Tanu, additional, Margon, Bruce, additional, Matsubara, Takahiko, additional, McGehee, Peregrine M., additional, McKay, Timothy A., additional, Meiksin, Avery, additional, Munn, Jeffrey A., additional, Nakajima, Reiko, additional, Nash, Thomas, additional, Neilsen, Jr., Eric H., additional, Newberg, Heidi Jo, additional, Newman, Peter R., additional, Nichol, Robert C., additional, Nicinski, Tom, additional, Nieto-Santisteban, Maria, additional, Nitta, Atsuko, additional, Okamura, Sadanori, additional, O'Mullane, William, additional, Ostriker, Jeremiah P., additional, Owen, Russell, additional, Padmanabhan, Nikhil, additional, Peoples, John, additional, Pier, Jeffrey R., additional, Pope, Adrian C., additional, Quinn, Thomas R., additional, Richards, Gordon T., additional, Richmond, Michael W., additional, Rix, Hans-Walter, additional, Rockosi, Constance M., additional, Schlegel, David J., additional, Schneider, Donald P., additional, Scranton, Ryan, additional, Sekiguchi, Maki, additional, Seljak, Uros, additional, Sergey, Gary, additional, Sesar, Branimir, additional, Sheldon, Erin, additional, Shimasaku, Kazu, additional, Siegmund, Walter A., additional, Silvestri, Nicole M., additional, Smith, J. Allyn, additional, Smolčić, Vernesa, additional, Snedden, Stephanie A., additional, Stebbins, Albert, additional, Stoughton, Chris, additional, Strauss, Michael A., additional, SubbaRao, Mark, additional, Szalay, Alexander S., additional, Szapudi, István, additional, Szkody, Paula, additional, Szokoly, Gyula P., additional, Tegmark, Max, additional, Teodoro, Luis, additional, Thakar, Aniruddha R., additional, Tremonti, Christy, additional, Tucker, Douglas L., additional, Uomoto, Alan, additional, Vanden Berk, Daniel E., additional, Vandenberg, Jan, additional, Vogeley, Michael S., additional, Voges, Wolfgang, additional, Vogt, Nicole P., additional, Walkowicz, Lucianne M., additional, Wang, Shu-i, additional, Weinberg, David H., additional, West, Andrew A., additional, White, Simon D. M., additional, Wilhite, Brian C., additional, Xu, Yongzhong, additional, Yanny, Brian, additional, Yasuda, Naoki, additional, Yip, Ching-Wa, additional, Yocum, D. R., additional, York, Donald G., additional, Zehavi, Idit, additional, Zibetti, Stefano, additional, and Zucker, Daniel B., additional more...

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2004
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20. VLT Optical and Near-Infrared Observations of the [CLC][ITAL]z[/ITAL][/CLC] = 6.28 Quasar SDSS J1030+0524

Author

Pentericci, Laura, primary, Fan, Xiaohui, additional, Rix, Hans-Walter, additional, Strauss, Michael A., additional, Narayanan, Vijay K., additional, Richards, Gordon T., additional, Schneider, Donald P., additional, Krolik, Julian, additional, Heckman, Tim, additional, Brinkmann, Jonathan, additional, Lamb, Don Q., additional, and Szokoly, Gyula P., additional more...

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2002
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21. The Cut-and-Enhance Method: Selecting Clusters of Galaxies from the Sloan Digital Sky Survey Commissioning Data

Author

Goto, Tomotsugu, primary, Sekiguchi, Maki, additional, Nichol, Robert C., additional, Bahcall, Neta A., additional, Kim, Rita S. J., additional, Annis, James, additional, Ivezić, Željko, additional, Brinkmann, J., additional, Hennessy, Gregory S., additional, Szokoly, Gyula P., additional, and Tucker, Douglas L., additional more...

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2002
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22. Sloan Digital Sky Survey: Early Data Release

Author

Stoughton, Chris, primary, Lupton, Robert H., additional, Bernardi, Mariangela, additional, Blanton, Michael R., additional, Burles, Scott, additional, Castander, Francisco J., additional, Connolly, A. J., additional, Eisenstein, Daniel J., additional, Frieman, Joshua A., additional, Hennessy, G. S., additional, Hindsley, Robert B., additional, Ivezić, Željko, additional, Kent, Stephen, additional, Kunszt, Peter Z., additional, Lee, Brian C., additional, Meiksin, Avery, additional, Munn, Jeffrey A., additional, Newberg, Heidi Jo, additional, Nichol, R. C., additional, Nicinski, Tom, additional, Pier, Jeffrey R., additional, Richards, Gordon T., additional, Richmond, Michael W., additional, Schlegel, David J., additional, Smith, J. Allyn, additional, Strauss, Michael A., additional, SubbaRao, Mark, additional, Szalay, Alexander S., additional, Thakar, Aniruddha R., additional, Tucker, Douglas L., additional, Vanden Berk, Daniel E., additional, Yanny, Brian, additional, Adelman, Jennifer K., additional, Anderson, Jr., John E., additional, Anderson, Scott F., additional, Annis, James, additional, Bahcall, Neta A., additional, Bakken, J. A., additional, Bartelmann, Matthias, additional, Bastian, Steven, additional, Bauer, Amanda, additional, Berman, Eileen, additional, Böhringer, Hans, additional, Boroski, William N., additional, Bracker, Steve, additional, Briegel, Charlie, additional, Briggs, John W., additional, Brinkmann, J., additional, Brunner, Robert, additional, Carey, Larry, additional, Carr, Michael A., additional, Chen, Bing, additional, Christian, Damian, additional, Colestock, Patrick L., additional, Crocker, J. H., additional, Csabai, István, additional, Czarapata, Paul C., additional, Dalcanton, Julianne, additional, Davidsen, Arthur F., additional, Davis, John Eric, additional, Dehnen, Walter, additional, Dodelson, Scott, additional, Doi, Mamoru, additional, Dombeck, Tom, additional, Donahue, Megan, additional, Ellman, Nancy, additional, Elms, Brian R., additional, Evans, Michael L., additional, Eyer, Laurent, additional, Fan, Xiaohui, additional, Federwitz, Glenn R., additional, Friedman, Scott, additional, Fukugita, Masataka, additional, Gal, Roy, additional, Gillespie, Bruce, additional, Glazebrook, Karl, additional, Gray, Jim, additional, Grebel, Eva K., additional, Greenawalt, Bruce, additional, Greene, Gretchen, additional, Gunn, James E., additional, de Haas, Ernst, additional, Haiman, Zoltán, additional, Haldeman, Merle, additional, Hall, Patrick B., additional, Hamabe, Masaru, additional, Hansen, Brad, additional, Harris, Frederick H., additional, Harris, Hugh, additional, Harvanek, Michael, additional, Hawley, Suzanne L., additional, Hayes, J. J. E., additional, Heckman, Timothy M., additional, Helmi, Amina, additional, Henden, Arne, additional, Hogan, Craig J., additional, Hogg, David W., additional, Holmgren, Donald J., additional, Holtzman, Jon, additional, Huang, Chih-Hao, additional, Hull, Charles, additional, Ichikawa, Shin-Ichi, additional, Ichikawa, Takashi, additional, Johnston, David E., additional, Kauffmann, Guinevere, additional, Kim, Rita S. J., additional, Kimball, Tim, additional, Kinney, E., additional, Klaene, Mark, additional, Kleinman, S. J., additional, Klypin, Anatoly, additional, Knapp, G. R., additional, Korienek, John, additional, Krolik, Julian, additional, Kron, Richard G., additional, Krzesiński, Jurek, additional, Lamb, D. Q., additional, Leger, R. French, additional, Limmongkol, Siriluk, additional, Lindenmeyer, Carl, additional, Long, Daniel C., additional, Loomis, Craig, additional, Loveday, Jon, additional, MacKinnon, Bryan, additional, Mannery, Edward J., additional, Mantsch, P. M., additional, Margon, Bruce, additional, McGehee, Peregrine, additional, McKay, Timothy A., additional, McLean, Brian, additional, Menou, Kristen, additional, Merelli, Aronne, additional, Mo, H. J., additional, Monet, David G., additional, Nakamura, Osamu, additional, Narayanan, Vijay K., additional, Nash, Thomas, additional, Neilsen, Jr., Eric H., additional, Newman, Peter R., additional, Nitta, Atsuko, additional, Odenkirchen, Michael, additional, Okada, Norio, additional, Okamura, Sadanori, additional, Ostriker, Jeremiah P., additional, Owen, Russell, additional, Pauls, A. George, additional, Peoples, John, additional, Peterson, R. S., additional, Petravick, Donald, additional, Pope, Adrian, additional, Pordes, Ruth, additional, Postman, Marc, additional, Prosapio, Angela, additional, Quinn, Thomas R., additional, Rechenmacher, Ron, additional, Rivetta, Claudio H., additional, Rix, Hans-Walter, additional, Rockosi, Constance M., additional, Rosner, Robert, additional, Ruthmansdorfer, Kurt, additional, Sandford, Dale, additional, Schneider, Donald P., additional, Scranton, Ryan, additional, Sekiguchi, Maki, additional, Sergey, Gary, additional, Sheth, Ravi, additional, Shimasaku, Kazuhiro, additional, Smee, Stephen, additional, Snedden, Stephanie A., additional, Stebbins, Albert, additional, Stubbs, Christopher, additional, Szapudi, István, additional, Szkody, Paula, additional, Szokoly, Gyula P., additional, Tabachnik, Serge, additional, Tsvetanov, Zlatan, additional, Uomoto, Alan, additional, Vogeley, Michael S., additional, Voges, Wolfgang, additional, Waddell, Patrick, additional, Walterbos, René, additional, Wang, Shu-i, additional, Watanabe, Masaru, additional, Weinberg, David H., additional, White, Richard L., additional, White, Simon D. M., additional, Wilhite, Brian, additional, Wolfe, David, additional, Yasuda, Naoki, additional, York, Donald G., additional, Zehavi, Idit, additional, and Zheng, Wei, additional more...

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2002
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23. Photometric Redshifts of Quasars

Author

Richards, Gordon T., primary, Weinstein, Michael A., additional, Schneider, Donald P., additional, Fan, Xiaohui, additional, Strauss, Michael A., additional, Vanden Berk, Daniel E., additional, Annis, James, additional, Burles, Scott, additional, Laubacher, Emily M., additional, York, Donald G., additional, Frieman, Joshua A., additional, Johnston, David, additional, Scranton, Ryan, additional, Gunn, James E., additional, Ivezić, Željko, additional, Nichol, R. C., additional, Budavári, Tamás, additional, Csabai, István, additional, Szalay, Alexander S., additional, Connolly, Andrew J., additional, Szokoly, Gyula P., additional, Bahcall, Neta A., additional, Benítez, Narciso, additional, Brinkmann, J., additional, Brunner, Robert, additional, Fukugita, Masataka, additional, Hall, Patrick B., additional, Hennessy, G. S., additional, Knapp, G. R., additional, Kunszt, Peter Z., additional, Lamb, D. Q., additional, Munn, Jeffrey A., additional, Newberg, Heidi Jo, additional, and Stoughton, Chris, additional more...

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2001
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24. Statistical Properties of Bright Galaxies in the Sloan Digital Sky Survey Photometric System

Author

Shimasaku, Kazuhiro, primary, Fukugita, Masataka, additional, Doi, Mamoru, additional, Hamabe, Masaru, additional, Ichikawa, Takashi, additional, Okamura, Sadanori, additional, Sekiguchi, Maki, additional, Yasuda, Naoki, additional, Brinkmann, Jon, additional, Csabai, István, additional, Ichikawa, Shin-Ichi, additional, Ivezić, Zeljko, additional, Kunszt, Peter Z., additional, Schneider, Donald P., additional, Szokoly, Gyula P., additional, Watanabe, Masaru, additional, and York, Donald G., additional more...

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2001
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25. Galaxy Number Counts from the Sloan Digital Sky Survey Commissioning Data

Author

Yasuda, Naoki, primary, Fukugita, Masataka, additional, Narayanan, Vijay K., additional, Lupton, Robert H., additional, Strateva, Iskra, additional, Strauss, Michael A., additional, Ivezić, Željko, additional, Kim, Rita S. J., additional, Hogg, David W., additional, Weinberg, David H., additional, Shimasaku, Kazuhiro, additional, Loveday, Jon, additional, Annis, James, additional, Bahcall, Neta A., additional, Blanton, Michael, additional, Brinkmann, Jon, additional, Brunner, Robert J., additional, Connolly, Andrew J., additional, Csabai, István, additional, Doi, Mamoru, additional, Hamabe, Masaru, additional, Ichikawa, Shin-Ichi, additional, Ichikawa, Takashi, additional, Johnston, David E., additional, Knapp, G. R., additional, Kunszt, Peter Z., additional, Lamb, D. Q., additional, McKay, Timothy A., additional, Munn, Jeffrey A., additional, Nichol, Robert C., additional, Okamura, Sadanori, additional, Schneider, Donald P., additional, Szokoly, Gyula P., additional, Vogeley, Michael S., additional, Watanabe, Masaru, additional, and York, Donald G., additional more...

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2001
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26. Photometric Redshifts from Reconstructed Quasar Templates

Author

Budavári, Tamás, primary, Csabai, István, additional, Szalay, Alexander S., additional, Connolly, Andrew J., additional, Szokoly, Gyula P., additional, Vanden Berk, Daniel E., additional, Richards, Gordon T., additional, Weinstein, Michael A., additional, Schneider, Donald P., additional, Benítez, Narciso, additional, Brinkmann, J., additional, Brunner, Robert, additional, Hall, Patrick B., additional, Hennessy, G. S., additional, Ivezić, Željko, additional, Kunszt, Péter Z., additional, Munn, Jeffrey A., additional, Nichol, R. C., additional, Pier, Jeffrey R., additional, and York, Donald G., additional more...

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2001
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27. Composite Quasar Spectra from the Sloan Digital Sky Survey

Author

Vanden Berk, Daniel E., primary, Richards, Gordon T., additional, Bauer, Amanda, additional, Strauss, Michael A., additional, Schneider, Donald P., additional, Heckman, Timothy M., additional, York, Donald G., additional, Hall, Patrick B., additional, Fan, Xiaohui, additional, Knapp, G. R., additional, Anderson, Scott F., additional, Annis, James, additional, Bahcall, Neta A., additional, Bernardi, Mariangela, additional, Briggs, John W., additional, Brinkmann, J., additional, Brunner, Robert, additional, Burles, Scott, additional, Carey, Larry, additional, Castander, Francisco J., additional, Connolly, A. J., additional, Crocker, J. H., additional, Csabai, István, additional, Doi, Mamoru, additional, Finkbeiner, Douglas, additional, Friedman, Scott, additional, Frieman, Joshua A., additional, Fukugita, Masataka, additional, Gunn, James E., additional, Hennessy, G. S., additional, Ivezić, Željko, additional, Kent, Stephen, additional, Kunszt, Peter Z., additional, Lamb, D. Q., additional, Leger, R. French, additional, Long, Daniel C., additional, Loveday, Jon, additional, Lupton, Robert H., additional, Meiksin, Avery, additional, Merelli, Aronne, additional, Munn, Jeffrey A., additional, Newberg, Heidi Jo, additional, Newcomb, Matt, additional, Nichol, R. C., additional, Owen, Russell, additional, Pier, Jeffrey R., additional, Pope, Adrian, additional, Rockosi, Constance M., additional, Schlegel, David J., additional, Siegmund, Walter A., additional, Smee, Stephen, additional, Snir, Yehuda, additional, Stoughton, Chris, additional, Stubbs, Christopher, additional, SubbaRao, Mark, additional, Szalay, Alexander S., additional, Szokoly, Gyula P., additional, Tremonti, Christy, additional, Uomoto, Alan, additional, Waddell, Patrick, additional, Yanny, Brian, additional, and Zheng, Wei, additional more...

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2001
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28. Colors of 2625 Quasars at 0 < [ITAL][CLC]z[/CLC][/ITAL] < 5 Measured in the Sloan Digital Sky Survey Photometric System

Author

Richards, Gordon T., primary, Fan, Xiaohui, additional, Schneider, Donald P., additional, Vanden Berk, Daniel E., additional, Strauss, Michael A., additional, York, Donald G., additional, Anderson, Jr., John E., additional, Anderson, Scott F., additional, Annis, James, additional, Bahcall, Neta A., additional, Bernardi, Mariangela, additional, Briggs, John W., additional, Brinkmann, J., additional, Brunner, Robert, additional, Burles, Scott, additional, Carey, Larry, additional, Castander, Francisco J., additional, Connolly, A. J., additional, Crocker, J. H., additional, Csabai, István, additional, Doi, Mamoru, additional, Finkbeiner, Douglas, additional, Friedman, Scott D., additional, Frieman, Joshua A., additional, Fukugita, Masataka, additional, Gunn, James E., additional, Hindsley, Robert B., additional, Ivezić, Željko, additional, Kent, Stephen, additional, Knapp, G. R., additional, Lamb, D. Q., additional, Leger, R. French, additional, Long, Daniel C., additional, Loveday, Jon, additional, Lupton, Robert H., additional, McKay, Timothy A., additional, Meiksin, Avery, additional, Merrelli, Aronne, additional, Munn, Jeffrey A., additional, Newberg, Heidi Jo, additional, Newcomb, Matt, additional, Nichol, R. C., additional, Owen, Russell, additional, Pier, Jeffrey R., additional, Pope, Adrian, additional, Richmond, Michael W., additional, Rockosi, Constance M., additional, Schlegel, David J., additional, Siegmund, Walter A., additional, Smee, Stephen, additional, Snir, Yehuda, additional, Stoughton, Chris, additional, Stubbs, Christopher, additional, SubbaRao, Mark, additional, Szalay, Alexander S., additional, Szokoly, Gyula P., additional, Tremonti, Christy, additional, Uomoto, Alan, additional, Waddell, Patrick, additional, Yanny, Brian, additional, and Zheng, Wei, additional more...

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2001
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29. The Luminosity Function of Galaxies in SDSS Commissioning Data

Author

Blanton, Michael R., primary, Dalcanton, Julianne, additional, Eisenstein, Daniel, additional, Loveday, Jon, additional, Strauss, Michael A., additional, SubbaRao, Mark, additional, Weinberg, David H., additional, Anderson, Jr., John E., additional, Annis, James, additional, Bahcall, Neta A., additional, Bernardi, Mariangela, additional, Brinkmann, J., additional, Brunner, Robert J., additional, Burles, Scott, additional, Carey, Larry, additional, Castander, Francisco J., additional, Connolly, Andrew J., additional, Csabai, István, additional, Doi, Mamoru, additional, Finkbeiner, Douglas, additional, Friedman, Scott, additional, Frieman, Joshua A., additional, Fukugita, Masataka, additional, Gunn, James E., additional, Hennessy, G. S., additional, Hindsley, Robert B., additional, Hogg, David W., additional, Ichikawa, Takashi, additional, Ivezić, Željko, additional, Kent, Stephen, additional, Knapp, G. R., additional, Lamb, D. Q., additional, Leger, R. French, additional, Long, Daniel C., additional, Lupton, Robert H., additional, McKay, Timothy A., additional, Meiksin, Avery, additional, Merelli, Aronne, additional, Munn, Jeffrey A., additional, Narayanan, Vijay, additional, Newcomb, Matt, additional, Nichol, R. C., additional, Okamura, Sadanori, additional, Owen, Russell, additional, Pier, Jeffrey R., additional, Pope, Adrian, additional, Postman, Marc, additional, Quinn, Thomas, additional, Rockosi, Constance M., additional, Schlegel, David J., additional, Schneider, Donald P., additional, Shimasaku, Kazuhiro, additional, Siegmund, Walter A., additional, Smee, Stephen, additional, Snir, Yehuda, additional, Stoughton, Chris, additional, Stubbs, Christopher, additional, Szalay, Alexander S., additional, Szokoly, Gyula P., additional, Thakar, Aniruddha R., additional, Tremonti, Christy, additional, Tucker, Douglas L., additional, Uomoto, Alan, additional, Vanden Berk, Dan, additional, Vogeley, Michael S., additional, Waddell, Patrick, additional, Yanny, Brian, additional, Yasuda, Naoki, additional, and York, Donald G., additional more...

Published
2001
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30. The First Hour of Extragalactic Data of the Sloan Digital Sky Survey Spectroscopic Commissioning: The Coma Cluster

Author

Castander, Francisco J., primary, Nichol, Robert C., additional, Merrelli, Aronne, additional, Burles, Scott, additional, Pope, Adrian, additional, Connolly, Andrew J., additional, Uomoto, Alan, additional, Gunn, James E., additional, Anderson, John E., additional, Annis, James, additional, Bahcall, Neta A., additional, Boroski, William N., additional, Brinkmann, Jon, additional, Carey, Larry, additional, Crocker, James H., additional, Csabai, István, additional, Doi, Mamoru, additional, Frieman, Joshua A., additional, Fukugita, Masataka, additional, Friedman, Scott D., additional, Hilton, Eric J., additional, Hindsley, Robert B., additional, Ivezić, Željko, additional, Kent, Steve, additional, Lamb, Donald Q., additional, Leger, R. French, additional, Long, Daniel C., additional, Loveday, Jon, additional, Lupton, Robert H., additional, MacGillivray, Harvey, additional, Meiksin, Avery, additional, Munn, Jeffrey A., additional, Newcomb, Matt, additional, Okamura, Sadanori, additional, Owen, Russell, additional, Pier, Jeffrey R., additional, Rockosi, Constance M., additional, Schlegel, David J., additional, Schneider, Donald P., additional, Seigmund, Walter, additional, Smee, Stephen, additional, Snir, Yehuda, additional, Starkman, Larry, additional, Stoughton, Chris, additional, Szokoly, Gyula P., additional, Stubbs, Christopher, additional, SubbaRao, Mark, additional, Szalay, Alex, additional, Thakar, Aniruddha R., additional, Tremonti, Christy, additional, Waddell, Patrick, additional, Yanny, Brian, additional, and York, Donald G., additional more...

Published
2001
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31. The Discovery of a Luminous [CLC][ITAL]z[/ITAL][/CLC] = 5.80 Quasar from the Sloan Digital Sky Survey

Author

Fan, Xiaohui, primary, White, Richard L., additional, Davis, Marc, additional, Becker, Robert H., additional, Strauss, Michael A., additional, Haiman, Zoltan, additional, Schneider, Donald P., additional, Gregg, Michael D., additional, Gunn, James E., additional, Knapp, G. R., additional, Lupton, Robert H., additional, Anderson, Jr., John E., additional, Anderson, Scott F., additional, Annis, James, additional, Bahcall, Neta A., additional, Boroski, William N., additional, Brunner, Robert J., additional, Chen, Bing, additional, Connolly, Andrew J., additional, Csabai, István, additional, Doi, Mamoru, additional, Fukugita, Masataka, additional, Hennessy, G. S., additional, Hindsley, Robert B., additional, Ichikawa, Takashi, additional, Ivezić, Željko, additional, Loveday, Jon, additional, Meiksin, Avery, additional, McKay, Timothy A., additional, Munn, Jeffrey A., additional, Newberg, Heidi Jo, additional, Nichol, Robert, additional, Okamura, Sadanori, additional, Pier, Jeffrey R., additional, Sekiguchi, Maki, additional, Shimasaku, Kazuhiro, additional, Stoughton, Chris, additional, Szalay, Alexander S., additional, Szokoly, Gyula P., additional, Thakar, Aniruddha R., additional, Vogeley, Michael S., additional, and York, Donald G., additional more...

Published
2000
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32. Weak Lensing with Sloan Digital Sky Survey Commissioning Data: The Galaxy-Mass Correlation Function to 1 [CLC][ITAL]h[/ITAL][/CLC][TSUP]−1[/TSUP] M[CLC]pc[/CLC]

Author

Fischer, Philippe, primary, McKay, Timothy A., additional, Sheldon, Erin, additional, Connolly, Andrew, additional, Stebbins, Albert, additional, Frieman, Joshua A., additional, Jain, Bhuvnesh, additional, Joffre, Michael, additional, Johnston, David, additional, Bernstein, Gary, additional, Annis, James, additional, Bahcall, Neta A., additional, Brinkmann, J., additional, Carr, Michael A., additional, Csabai, István, additional, Gunn, James E., additional, Hennessy, G. S., additional, Hindsley, Robert B., additional, Hull, Charles, additional, Ivezić, Željko, additional, Knapp, G. R., additional, Limmongkol, Siriluk, additional, Lupton, Robert H., additional, Munn, Jeffrey A., additional, Nash, Thomas, additional, Newberg, Heidi Jo, additional, Owen, Russell, additional, Pier, Jeffrey R., additional, Rockosi, Constance M., additional, Schneider, Donald P., additional, Smith, J. Allyn, additional, Stoughton, Chris, additional, Szalay, Alexander S., additional, Szokoly, Gyula P., additional, Thakar, Aniruddha R., additional, Vogeley, Michael S., additional, Waddell, Patrick, additional, Weinberg, David H., additional, York, Donald G., additional, and Collaboration), (The SDSS, additional more...

Published
2000
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33. The Sloan Digital Sky Survey: Technical Summary

Author

York, Donald G., primary, Adelman, J., additional, Anderson, Jr., John E., additional, Anderson, Scott F., additional, Annis, James, additional, Bahcall, Neta A., additional, Bakken, J. A., additional, Barkhouser, Robert, additional, Bastian, Steven, additional, Berman, Eileen, additional, Boroski, William N., additional, Bracker, Steve, additional, Briegel, Charlie, additional, Briggs, John W., additional, Brinkmann, J., additional, Brunner, Robert, additional, Burles, Scott, additional, Carey, Larry, additional, Carr, Michael A., additional, Castander, Francisco J., additional, Chen, Bing, additional, Colestock, Patrick L., additional, Connolly, A. J., additional, Crocker, J. H., additional, Csabai, István, additional, Czarapata, Paul C., additional, Davis, John Eric, additional, Doi, Mamoru, additional, Dombeck, Tom, additional, Eisenstein, Daniel, additional, Ellman, Nancy, additional, Elms, Brian R., additional, Evans, Michael L., additional, Fan, Xiaohui, additional, Federwitz, Glenn R., additional, Fiscelli, Larry, additional, Friedman, Scott, additional, Frieman, Joshua A., additional, Fukugita, Masataka, additional, Gillespie, Bruce, additional, Gunn, James E., additional, Gurbani, Vijay K., additional, de Haas, Ernst, additional, Haldeman, Merle, additional, Harris, Frederick H., additional, Hayes, J., additional, Heckman, Timothy M., additional, Hennessy, G. S., additional, Hindsley, Robert B., additional, Holm, Scott, additional, Holmgren, Donald J., additional, Huang, Chi-hao, additional, Hull, Charles, additional, Husby, Don, additional, Ichikawa, Shin-Ichi, additional, Ichikawa, Takashi, additional, Ivezić, Željko, additional, Kent, Stephen, additional, Kim, Rita S. J., additional, Kinney, E., additional, Klaene, Mark, additional, Kleinman, A. N., additional, Kleinman, S., additional, Knapp, G. R., additional, Korienek, John, additional, Kron, Richard G., additional, Kunszt, Peter Z., additional, Lamb, D. Q., additional, Lee, B., additional, Leger, R. French, additional, Limmongkol, Siriluk, additional, Lindenmeyer, Carl, additional, Long, Daniel C., additional, Loomis, Craig, additional, Loveday, Jon, additional, Lucinio, Rich, additional, Lupton, Robert H., additional, MacKinnon, Bryan, additional, Mannery, Edward J., additional, Mantsch, P. M., additional, Margon, Bruce, additional, McGehee, Peregrine, additional, McKay, Timothy A., additional, Meiksin, Avery, additional, Merelli, Aronne, additional, Monet, David G., additional, Munn, Jeffrey A., additional, Narayanan, Vijay K., additional, Nash, Thomas, additional, Neilsen, Eric, additional, Neswold, Rich, additional, Newberg, Heidi Jo, additional, Nichol, R. C., additional, Nicinski, Tom, additional, Nonino, Mario, additional, Okada, Norio, additional, Okamura, Sadanori, additional, Ostriker, Jeremiah P., additional, Owen, Russell, additional, Pauls, A. George, additional, Peoples, John, additional, Peterson, R. L., additional, Petravick, Donald, additional, Pier, Jeffrey R., additional, Pope, Adrian, additional, Pordes, Ruth, additional, Prosapio, Angela, additional, Rechenmacher, Ron, additional, Quinn, Thomas R., additional, Richards, Gordon T., additional, Richmond, Michael W., additional, Rivetta, Claudio H., additional, Rockosi, Constance M., additional, Ruthmansdorfer, Kurt, additional, Sandford, Dale, additional, Schlegel, David J., additional, Schneider, Donald P., additional, Sekiguchi, Maki, additional, Sergey, Gary, additional, Shimasaku, Kazuhiro, additional, Siegmund, Walter A., additional, Smee, Stephen, additional, Smith, J. Allyn, additional, Snedden, S., additional, Stone, R., additional, Stoughton, Chris, additional, Strauss, Michael A., additional, Stubbs, Christopher, additional, SubbaRao, Mark, additional, Szalay, Alexander S., additional, Szapudi, Istvan, additional, Szokoly, Gyula P., additional, Thakar, Anirudda R., additional, Tremonti, Christy, additional, Tucker, Douglas L., additional, Uomoto, Alan, additional, Vanden Berk, Dan, additional, Vogeley, Michael S., additional, Waddell, Patrick, additional, Wang, Shu-i, additional, Watanabe, Masaru, additional, Weinberg, David H., additional, Yanny, Brian, additional, and Yasuda, Naoki, additional more...

Published
2000
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34. Candidate RR Lyrae Stars Found in Sloan Digital Sky Survey Commissioning Data*

Author

Ivezić, Željko, primary, Peek, J. E. G., additional, Finlator, Kristian, additional, Knapp, Gillian R., additional, Yanny, Brian, additional, McKay, Timothy A., additional, Amrose, Susan, additional, Krisciunas, Kevin, additional, Willman, Beth, additional, Anderson, Scott, additional, Schaber, Chris, additional, Erb, Dawn, additional, Logan, Chelsea, additional, Stubbs, Chris, additional, Chen, Bing, additional, Neilsen, Eric, additional, Uomoto, Alan, additional, Pier, Jeffrey R., additional, Fan, Xiaohui, additional, Gunn, James E., additional, Lupton, Robert H., additional, Rockosi, Constance M., additional, Schlegel, David, additional, Strauss, Michael A., additional, Annis, James, additional, Brinkmann, Jon, additional, Csabai, István, additional, Doi, Mamoru, additional, Fukugita, Masataka, additional, Hennessy, Gregory S., additional, Hindsley, Robert B., additional, Margon, Bruce, additional, Munn, Jeffrey A., additional, Newberg, Heidi Jo, additional, Schneider, Donald P., additional, Smith, J. Allyn, additional, Szokoly, Gyula P., additional, Thakar, Aniruddha R., additional, Vogeley, Michael S., additional, Waddell, Patrick, additional, Yasuda, Naoki, additional, and York, Donald G., additional more...

Published
2000
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35. L Dwarfs Found in Sloan Digital Sky Survey Commissioning Imaging Data

Author

Fan, Xiaohui, primary, Knapp, G. R., additional, Strauss, Michael A., additional, Gunn, James E., additional, Lupton, Robert H., additional, Ivezić, Željko, additional, Rockosi, Constance M., additional, Yanny, Brian, additional, Kent, Stephen, additional, Schneider, Donald P., additional, Kirkpatrick, J. Davy, additional, Annis, James, additional, Bastian, Steven, additional, Berman, Eileen, additional, Brinkmann, J., additional, Csabai, István, additional, Federwitz, Glenn R., additional, Fukugita, Masataka, additional, Gurbani, Vijay K., additional, Hennessy, G. S., additional, Hindsley, Robert B., additional, Ichikawa, Takashi, additional, Lamb, D. Q., additional, Lindenmeyer, Carl, additional, Mantsch, P. M., additional, McKay, Timothy A., additional, Munn, Jeffrey A., additional, Nash, Thomas, additional, Okamura, Sadanori, additional, Pauls, A. George, additional, Pier, Jeffrey R., additional, Rechenmacher, Ron, additional, Rivetta, Claudio H., additional, Sergey, Gary, additional, Stoughton, Chris, additional, Szalay, Alexander S., additional, Szokoly, Gyula P., additional, Tucker, Douglas L., additional, York, Donald G., additional, and Collaboration), (The SDSS, additional more...

Published
2000
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36. High-Redshift Quasars Found in Sloan Digital Sky Survey Commissioning Data

Author

Fan, Xiaohui, primary, Strauss, Michael A., additional, Schneider, Donald P., additional, Gunn, James E., additional, Lupton, Robert H., additional, Yanny, Brian, additional, Anderson, Scott F., additional, Anderson, Jr., John E., additional, Annis, James, additional, Bahcall, Neta A., additional, Bakken, J. A., additional, Bastian, Steven, additional, Berman, Eileen, additional, Boroski, William N., additional, Briegel, Charlie, additional, Briggs, John W., additional, Brinkmann, J., additional, Carr, Michael A., additional, Colestock, Patrick L., additional, Connolly, A. J., additional, Crocker, J. H., additional, Csabai, István, additional, Czarapata, Paul C., additional, Davis, John Eric, additional, Doi, Mamoru, additional, Elms, Brian R., additional, Evans, Michael L., additional, Federwitz, Glenn R., additional, Frieman, Joshua A., additional, Fukugita, Masataka, additional, Gurbani, Vijay K., additional, Harris, Frederick H., additional, Heckman, Timothy M., additional, Hennessy, G. S., additional, Hindsley, Robert B., additional, Holmgren, Donald J., additional, Hull, Charles, additional, Ichikawa, Shin-Ichi, additional, Ichikawa, Takashi, additional, Ivezić, Željko, additional, Kent, Stephen, additional, Knapp, G. R., additional, Kron, Richard G., additional, Lamb, D. Q., additional, Leger, R. French, additional, Limmongkol, Siriluk, additional, Lindenmeyer, Carl, additional, Long, Daniel C., additional, Loveday, Jon, additional, MacKinnon, Bryan, additional, Mannery, Edward J., additional, Mantsch, P. M., additional, Margon, Bruce, additional, McKay, Timothy A., additional, Munn, Jeffrey A., additional, Nash, Thomas, additional, Newberg, Heidi Jo, additional, Nichol, R. C., additional, Nicinski, Tom, additional, Okamura, Sadanori, additional, Ostriker, Jeremiah P., additional, Owen, Russell, additional, Pauls, A. George, additional, Peoples, John, additional, Petravick, Donald, additional, Pier, Jeffrey R., additional, Pordes, Ruth, additional, Prosapio, Angela, additional, Rechenmacher, Ron, additional, Richards, Gordon T., additional, Richmond, Michael W., additional, Rivetta, Claudio H., additional, Rockosi, Constance M., additional, Sandford, Dale, additional, Sergey, Gary, additional, Sekiguchi, Maki, additional, Shimasaku, Kazuhiro, additional, Siegmund, Walter A., additional, Smith, J. Allyn, additional, Stoughton, Chris, additional, Szalay, Alexander S., additional, Szokoly, Gyula P., additional, Tucker, Douglas L., additional, Vogeley, Michael S., additional, Waddell, Patrick, additional, Wang, Shu-i, additional, Weinberg, David H., additional, Yasuda, Naoki, additional, and York, Donald G., additional more...

Published
1999
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39. AN X-RAY-SELECTED GALAXY CLUSTER IN THE LOCKMAN HOLE AT REDSHIFT 1.753

Author

Henry, Patrick, Salvato, Mara, Finoguenov, Alexis, Bouche, Nicolas, Brunner, Hermann, Burwitz, Vadim, Buschkamp, Peter, Egami, Eiichi, Forster, Natasha, Fotopoulou, Sotiria, Genzel, Reinhard, Hasinger, Gunther, Mainieri, Vincenzo, Rovilos, Manolis, and Szokoly, Gyula more...

Abstract

We have discovered an X-ray-selected galaxy cluster with a spectroscopic redshift of 1.753. The redshift is of the brightest cluster galaxy (BCG), which is coincident with the peak of the X-ray surface brightness. We also have concordant photometric redshifts for seven additional candidate cluster members. The X-ray luminosity of the cluster is (3.68 +- 0.70) x 1043 erg s-1 in the 0.1-2.4 keV band. The optical/IR properties of the BCG imply that its formation redshift was [?]5 if its stars formed in a short burst. This result continues the trend from lower redshift in which the observed properties of BCGs are most simply explained by a single monolithic collapse at very high redshift instead of the theoretically preferred gradual hierarchical assembly at later times. However, the models corresponding to different formation redshifts are more clearly separated as our observation epoch approaches the galaxy formation epoch. Although our infrared photometry is not deep enough to define a red sequence, we do identify a few galaxies at the cluster redshift that have the expected red sequence photometric properties. more...

Published
2010

40. A Classic Type 2 QSO

Author

Norman, Colin, Hasinger, Guenther, Giacconi, Riccardo, Gilli, Roberto, Kewley, Lisa, Nonino, Mario, Rosati, Piero, Szokoly, Gyula, Tozzi, Paolo, Wang, Junxian, Zheng, Wei, Zirm, Andrew, Bergeron, Jacqueline, Gilmozzi, Roberto, Grogin, Norman, Koekemoer, Anton, and Schreier, Ethan more...

Abstract

In the Chandra Deep Field-South 1 Ms exposure, we have found, at redshift 3.700 +- 0.005, the most distant type 2 active galactic nucleus ever detected. It is the source with the hardest X-ray spectrum with redshift z > 3. The optical spectrum has no detected continuum emission to a 3 s detection limit of ~3 x 10-19 ergs s-1 cm-2 A-1 and shows narrow lines of Lya, C IV, N V, He II, O VI, [O III], and C III]. Their FWHM line widths have a range of ~700-2300 km s-1 with an average of approximately ~1500 km s-1. The emitting gas is metal-rich (Z [?] 2.5-3 Z). In the X-ray spectrum of 130 counts in the 0.5-7 keV band, there is evidence for intrinsic absorption with NH [?] 1024 cm-2. An iron Ka line with rest-frame energy and equivalent width of ~6.4 keV and ~1 keV, respectively, in agreement with the obscuration scenario, is detected at a 2 s level. If confirmed by our forthcoming XMM-Newton observations, this would be the highest redshift detection of Fe Ka. Depending on the assumed cosmology and the X-ray transfer model, the 2-10 keV rest frame luminosity corrected for absorption is ~1045 +- 0.5 ergs cm-2 s-1, which makes our source a classic example of the long-sought type 2 QSO. From standard population synthesis models, these sources are expected to account for a relevant fraction of the black hole-powered QSO distribution at high redshift. more...

Published
2002

41. Colors of 2625 Quasars at 0 < z < 5 Measured in the Sloan Digital Sky Survey Photometric System

Author

Richards, Gordon T., Fan, Xiaohui, Schneider, Donald P., Vanden Berk, Daniel E., Strauss, Michael A., York, Donald G., Anderson, Jr., John E., Anderson, Scott F., Annis, James, Bahcall, Neta A., Bernardi, Mariangela, Briggs, John W., Brinkmann, J., Brunner, Robert, Burles, Scott, Carey, Larry, Castander, Francisco J., Connolly, A. J., Crocker, J. H., Csabai, István, Doi, Mamoru, Finkbeiner, Douglas, Friedman, Scott D., Frieman, Joshua A., Fukugita, Masataka, Gunn, James E., Hindsley, Robert B., Ivezic, Zeljko, Kent, Stephen, Knapp, G. R., Lamb, D. Q., Leger, R. French, Long, Daniel C., Loveday, Jon, Lupton, Robert H., McKay, Timothy A., Meiksin, Avery, Merrelli, Aronne, Munn, Jeffrey A., Newberg, Heidi Jo, Newcomb, Matt, Nichol, R. C., Owen, Russell, Pier, Jeffrey R., Pope, Adrian, Richmond, Michael W., Rockosi, Constance M., Schlegel, David J., Siegmund, Walter A., Smee, Stephen, Snir, Yehuda, Stoughton, Chris, Stubbs, Christopher, SubbaRao, Mark, Szalay, Alexander S., Szokoly, Gyula P., Tremonti, Christy, Uomoto, Alan, Waddell, Patrick, Yanny, Brian, and Zheng, Wei more...

Subjects
catalogs, quasars: general, surveys
Abstract

We present an empirical investigation of the colors of quasars in the Sloan Digital Sky Survey (SDSS) photometric system. The sample studied includes 2625 quasars with SDSS photometry: 1759 quasars found during SDSS spectroscopic commissioning and SDSS follow-up observations on other telescopes, 50 matches to FIRST quasars, 573 matches to quasars from the NASA Extragalactic Database, and 243 quasars from two or more of these sources. The quasars are distributed in a 2fdg5 wide stripe centered on the celestial equator covering ~529 deg2. Positions (accurate to 0farcs2) and SDSS magnitudes are given for the 898 quasars known prior to SDSS spectroscopic commissioning. New SDSS quasars, which range in brightness from i* = 15.39 to the photometric magnitude limit of the survey, represent an increase of over 200% in the number of known quasars in this area of the sky. The ensemble average of the observed colors of quasars in the SDSS passbands are well represented by a power-law continuum with αν = -0.5 (fν ∝ να) and are close to those predicted by previous simulations. However, the contributions of the "small blue (or λ3000) bump" and other strong emission lines have a significant effect upon the colors. The color-redshift relation exhibits considerable structure, which may be of use in determining photometric redshifts for quasars from their colors alone. The range of colors at a given redshift can generally be accounted for by a range in the optical spectral index with a distribution αν = -0.5 ± 0.65 (95% confidence), but there is a red tail in the distribution. This tail may be a sign of internal reddening, especially since fainter objects at a given redshift tend to exhibit redder colors than the average. Finally, we show that there is a continuum of properties between quasars and Seyfert galaxies, and we test the validity of the traditional dividing line (MB = -23) between the two classes of active galactic nuclei., Astronomy, Version of Record more...

Published
2001
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