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1. CLASSY II: A technical Overview of the COS Legacy Archive Spectroscopic SurveY

Author

James, Bethan L., Berg, Danielle A., King, Teagan, Sahnow, David J., Mingozzi, Matilde, Chisholm, John, Heckman, Timothy, Martin, Crystal L., Stark, Dan P., Team, The Classy, Aloisi, Alessandra, Amorín, Ricardo O., Arellano-Córdova, Karla Z., Bayliss, Matthew, Bordoloi, Rongmon, Brinchmann, Jarle, Charlot, Stéphane, Chevallard, Jacopo, Clark, Ilyse, Erb, Dawn K., Feltre, Anna, Hayes, Matthew, Henry, Alaina, Hernandez, Svea, Jaskot, Anne, Jones, Tucker, Kewley, Lisa J., Kumari, Nimisha, Leitherer, Claus, Llerena, Mario, Maseda, Michael, Nanayakkara, Themiya, Ouchi, Masami, Plat, Adele, Pogge, Richard W., Ravindranath, Swara, Rigby, Jane R., Sanders, Ryan, Scarlata, Claudia, Senchyna, Peter, Skillman, Evan D., Steidel, Charles C., Strom, Allison L., Sugahara, Yuma, Wilkins, Stephen M., Wofford, Aida, and Xu, Xinfeng

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

The COS Legacy Archive Spectroscopic SurveY (CLASSY) is designed to provide the community with a spectral atlas of 45 nearby star-forming galaxies which were chosen to cover similar properties as those seen at high-z (z>6). The prime high level science product of CLASSY is accurately coadded UV spectra, ranging from ~1000-2000A, derived from a combination of archival and new data obtained with HST's Cosmic Origins Spectrograph (COS). This paper details the multi-stage technical processes of creating this prime data product, and the methodologies involved in extracting, reducing, aligning, and coadding far-ultraviolet (FUV) and near-ultraviolet (NUV) spectra. We provide guidelines on how to successfully utilize COS observations of extended sources, despite COS being optimized for point sources, and best-practice recommendations for the coaddition of UV spectra in general. Moreover, we discuss the effects of our reduction and coaddition techniques in the scientific application of the CLASSY data. In particular, we find that accurately accounting for flux calibration offsets can affect the derived properties of the stellar populations, while customized extractions of NUV spectra for extended sources are essential for correctly diagnosing the metallicity of galaxies via CIII] nebular emission. Despite changes in spectral resolution of up to ~25% between individual datasets (due to changes in the COS line spread function), no adverse affects were observed on the difference in velocity width and outflow velocities of isolated absorption lines when measured in the final combined data products, owing in-part to our signal-to-noise regime of S/N<20., Comment: 31 pages, 17 figures, accepted for publication in ApJS

Published
2022
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2. CLASSY. II. A Technical Overview of the COS Legacy Archive Spectroscopic Survey* * Based on observations made with the NASA/ESA Hubble Space Telescope, obtained from the Data Archive at the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.

Author

James, Bethan L, Berg, Danielle A, King, Teagan, Sahnow, David J, Mingozzi, Matilde, Chisholm, John, Heckman, Timothy, Martin, Crystal L, Stark, Dan P, Aloisi, Alessandra, Amorín, Ricardo O, Arellano-Córdova, Karla Z, Bayliss, Matthew, Bordoloi, Rongmon, Brinchmann, Jarle, Charlot, Stéphane, Chen, Zuyi, Chevallard, Jacopo, Clark, Ilyse, Erb, Dawn K, Feltre, Anna, Hayes, Matthew, Henry, Alaina, Hernandez, Svea, Jaskot, Anne, Kewley, Lisa J, Kumari, Nimisha, Leitherer, Claus, Llerena, Mario, Maseda, Michael, Nanayakkara, Themiya, Ouchi, Masami, Plat, Adele, Pogge, Richard W, Ravindranath, Swara, Rigby, Jane R, Scarlata, Claudia, Senchyna, Peter, Skillman, Evan D, Steidel, Charles C, Strom, Allison L, Sugahara, Yuma, Wilkins, Stephen M, Wofford, Aida, and Xu, Xinfeng

Subjects
Space Sciences, Physical Sciences, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural), Astronomy & Astrophysics, Astronomical sciences
Abstract

Abstract: The COS Legacy Archive Spectroscopic SurveY (CLASSY) is designed to provide the community with a spectral atlas of 45 nearby star-forming galaxies that were chosen to cover similar properties to those seen at high z (z > 6). The prime high-level science product of CLASSY is accurately coadded UV spectra, ranging from ∼1000 to 2000 Å, derived from a combination of archival and new data obtained with HST’s Cosmic Origins Spectrograph (COS). This paper details the multistage technical processes of creating this prime data product and the methodologies involved in extracting, reducing, aligning, and coadding far-ultraviolet and near-ultraviolet (NUV) spectra. We provide guidelines on how to successfully utilize COS observations of extended sources, despite COS being optimized for point sources, and best-practice recommendations for the coaddition of UV spectra in general. Moreover, we discuss the effects of our reduction and coaddition techniques in the scientific application of the CLASSY data. In particular, we find that accurately accounting for flux calibration offsets can affect the derived properties of the stellar populations, while customized extractions of NUV spectra for extended sources are essential for correctly diagnosing the metallicity of galaxies via C iii] nebular emission. Despite changes in spectral resolution of up to ∼25% between individual data sets (due to changes in the COS line-spread function), no adverse affects were observed on the difference in velocity width and outflow velocities of isolated absorption lines when measured in the final combined data products, owing in part to our signal-to-noise regime of S/N < 20.

Published
2022

3. ACCESS: Enabling an Improved Flux Scale for Astrophysics

Author

Kaiser, Mary Elizabeth, Kruk, Jeffrey W., McCandliss, Stephan R., Sahnow, David J., Barkhouser, Robert H., Van Dixon, W., Feldman, Paul D., Moos, H. Warren, Orndorff, Joseph, Pelton, Russell, Riess, Adam G., Rauscher, Bernard J., Kimble, Randy A., Benford, Dominic J., Gardner, Jonathan P., Hill, Robert J., Woodgate, Bruce E., Bohlin, Ralph C., Deustua, Susana E., Kurucz, Robert, Lampton, Michael, Perlmutter, Saul, and Wright, Edward L.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

Improvements in the precision of the astrophysical flux scale are needed to answer fundamental scientific questions ranging from cosmology to stellar physics. The unexpected discovery that the expansion of the universe is accelerating was based upon the measurement of astrophysical standard candles that appeared fainter than expected. To characterize the underlying physical mechanism of the "Dark Energy" responsible for this phenomenon requires an improvement in the visible-NIR flux calibration of astrophysical sources to 1% precision. These improvements will also enable large surveys of white dwarf stars, e.g. GAIA, to advance stellar astrophysics by testing and providing constraints for the mass-radius relationship of these stars. ACCESS (Absolute Color Calibration Experiment for Standard Stars) is a rocket-borne payload that will enable the transfer of absolute laboratory detector standards from NIST to a network of stellar standards with a calibration accuracy of 1% and a spectral resolving power of R = 500 across the 0.35-1.7 micron bandpass. Among the strategies being employed to minimize calibration uncertainties are: (1) judicious selection of standard stars (previous calibration heritage, minimal spectral features, robust stellar atmosphere models), (2) execution of observations above the Earth's atmosphere (eliminates atmospheric contamination of the stellar spectrum), (3) a single optical path and detector (to minimize visible to NIR cross-calibration uncertainties), (4) establishment of an a priori error budget, (5) on-board monitoring of instrument performance, and (6) fitting stellar atmosphere models to the data to search for discrepancies and confirm performance., Comment: 14 pages, 13 figures

Published
2010

4. Project Lyman

Author

McCandliss, Stephan R., Kruk, Jeffrey W., Blair, William P., Kaiser, Mary Elizabeth, Feldman, Paul D., Meurer, Gerhardt R., Dixon, William V., Sahnow, David J., Neufeld, David A., Lupu, Roxana E., Fleming, Brian, Smee, Stephen A., Andersson, B. G., Moseley, Samuel H., Kutyrev, Alexander S., Li, Mary J., Sonneborn, George, Siegmund, Oswald H. W., Vallerga, John V., Welsh, Barry Y., Stiavelli, Massimo, Windhorst, Rogier A., and Shapley, Alice E.

Subjects
Astrophysics
Abstract

We explore the design of a space mission, Project Lyman, which has the goal of quantifying the ionization history of the universe from the present epoch to a redshift of z ~ 3. Observations from WMAP and SDSS show that before a redshift of z >~ 6 the first collapsed objects, possibly dwarf galaxies, emitted Lyman continuum (LyC) radiation shortward of 912 A, reionizing most of the universe. How LyC escapes from galactic environments, whether it induces positive or negative feedback on the local and global collapse of structures, and the role played by clumping, molecules, metallicity and dust are major unanswered theoretical questions, requiring observational constraint. Numerous intervening Lyman limit systems, which frustrate the detection of LyC from high z objects, thin below z ~ 3 where there are a few objects with apparently very high fesc. At low z there are only controversial detections and a handful of upper limits. A wide-field multi-object spectroscopic survey with moderate spectral and spatial resolution can quantify fesc within diverse spatially resolved galactic environments over redshifts with significant evolution in galaxy assemblage and quasar activity. It can also calibrate LyC escape against Ly-alpha escape, providing an essential tool to JWST for probing the beginnings of reionization. We present calculations showing the evolution of the characteristic apparent magnitude of star-forming galaxy luminosity functions at 900 A, as a function of redshift and assumed escape fraction to determine the required aperture for detecting LyC. We review our efforts to build a pathfinding dual order multi-object spectro/telescope with a (0.5deg)^2 field-of-view, using a GSFC microshutter array, and crossed delay-line micro-channel plate detector., Comment: SPIE oral paper 7011-76 presented at Astronomical Telescopes 2008 - 23 -- 28 June Marseille, France, 12 page, 5 figures

Published
2008
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5. FUV Scattering by Dust in Orion

Author

Shalima, P., Sujatha, N. V., Murthy, Jayant, Henry, Richard Conn, and Sahnow, David J.

Subjects
Astrophysics
Abstract

We have modelled diffuse far-ultraviolet spectrum observed by FUSE near M42 as scattering of starlight from the Trapezium stars by dust in front of the nebula. The dust grains are known to be anomalous in Orion with Rv = 5.5 and these are the first measurements of the FUV optical properties of the grains outside of ``normal'' Milky Way dust. We find an albedo varying from 0.3 $\pm$ 0.1 at 912 \AA to 0.5 $\pm$ 0.2 at 1020 \AA which is consistent with theoretical predictions., Comment: 4 pages, 4 figures

Published
2006
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6. Intense Diffuse Far-UV Emission from the Orion Nebula

Author

Murthy, Jayant, Sahnow, David J., and Henry, R. C.

Subjects
Astrophysics
Abstract

We present spectra of the diffuse FUV (900 -- 1200 \AA) emission from a region near the Orion Nebula: the first high resolution spectra of the diffuse background radiation. These observations were made using serendipitous FUSE observations and were only possible because of the strength of the diffuse emission (~3 x 10^5 photons cm-2 s-1 sr-1 A-1) and the sensitivity of the FUSE instrument. Preliminary modeling suggests that the light is scattered starlight from the Trapezium stars, primarily Theta Ori 1 C. However, a comparison of the spectra with nearby stars shows significant differences in the presence and strength of the absorption lines, particularly in the LyB line where there is much less interstellar absorption in our diffuse spectrum. We believe that we are indeed observing scattered light from the Trapezium stars but through a line of sight with much less matter than the direct line to the stars., Comment: 10 pages, 4 figures, submitted to ApJL

Published
2004
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7. Observations of the Diffuse FUV Background with FUSE

Author

Murthy, Jayant and Sahnow, David J.

Subjects
Astrophysics
Abstract

We have used observations taken under the FUSE S405/S505 channel realignment program to explore the diffuse FUV (1000 - 1200 \AA) radiation field. Of the 71 independent locations in that program, we have observed a diffuse signal in 32, ranging in brightness from 1600 photons cm$^{-2}$ s$^{-1}$ sr$^{-1}$ \AA$^{-1}$ to a maximum of $2.9 \times 10^5$ photons cm$^{-2}$ s$^{-1}$ sr$^{-1}$ \AA$^{-1} in Orion. The FUSE data confirm that the diffuse FUV sky is patchy with regions of intense emission, usually near bright stars, but also with dark regions, even at low Galactic latitudes. We find a weak correlation between the FUV flux and the 100 micron ratio but with wide variations, perhaps due to differences in the local radiation field., Comment: 15 pages, 7 figures, Accepted ApJ. Data available from http://www.iiap.res.in/personnel/murthy/projects/fuse/FUSE_background_analysi s.html

Published
2004
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8. Far Ultraviolet Spectroscopic Explorer Observations of the Supernova Remnant N49 in the Large Magellanic Cloud

Author

Blair, William P., Sankrit, Ravi, Shelton, Robin, Sembach, Kenneth R., Moos, H. Warren, Raymond, John C., York, Donald G., Feldman, Paul D., Chayer, Pierre, Murphy, Edward M., Sahnow, David J., and Wilkinson, Erik

Subjects
Astrophysics
Abstract

We report a Far Ultraviolet Spectroscopic Explorer satellite observation of the supernova remnant N49 in the Large Magellanic Cloud, covering the 905 -- 1187 A spectral region. A 30'' square aperture was used, resulting in a velocity resolution of ~100 km/s. The purpose of the observation was to examine several bright emission lines expected from earlier work and to demonstrate diffuse source sensitivity by searching for faint lines never seen previously in extragalactic supernova remnant UV spectra. Both goals were accomplished. Strong emission lines of O VI 1031.9 A, 1037.6 A and C III 977.0 A were seen, Doppler broadened to +/- 225 km/s and with centroids red-shifted to 350 km/s, consistent with the LMC. Superimposed on the emission lines are absorptions by C III and O VI 1031.9 at +260 km/s, which are attributed to warm and hot gas (respectively) in the LMC. The O VI 1037.6 A line is more severely affected by overlying interstellar and H2 absorption from both the LMC and our galaxy. N III 989.8 A is not seen, but models indicate overlying absorption severely attenuates this line. A number of faint lines from hot gas have also been detected, many of which have never been seen in an extragalactic supernova remnant spectrum., Comment: Part of FUSE Special Issue of ApJ Letters; 8 pages, including 4 figures and one table

Published
2000
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11. Extending the life of the Cosmic Origins Spectrograph (COS) with new lifetime positions

Author

Sahnow, David J., primary, Ake, Thomas, additional, Dashtamirova, Dzhuliya, additional, Dieterich, Serge, additional, Fischer, Travis, additional, Fischer, William, additional, Frazer, Elaine, additional, Hirschauer, Alec, additional, Indriolo, Nick, additional, James, Bethan, additional, Jedrzejewski, Robert, additional, Johnson, Christian, additional, Kerman, Nathan, additional, Miller, Lauren, additional, Plesha, Rachel, additional, Rafelski, Marc, additional, Rowlands, Kate, additional, Roman-Duval, Julia, additional, Sankrit, Ravi, additional, and Soderblom, David, additional

Published
2021
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12. Ultraviolet Legacy Library of Young Stars as Essential Standards (ULLYSES): Data Release I

Author

Roman-Duval, Julia, primary, Proffitt, Charles R., additional, Taylor, Joanna M., additional, Monroe, TalaWanda R., additional, Fischer, Travis C., additional, Fischer, William J., additional, Fullerton, A. W., additional, Aloisi, Alessandra, additional, Britt, Christopher T., additional, Busko, Ivo, additional, Carlberg, Joleen K., additional, Rosa, Gisella De, additional, Jedrzejewski, R. I., additional, Lockwood, Sean, additional, Frazer, Elaine M., additional, Hernandez, Svea, additional, James, Bethan L., additional, Oliveira, Cristina, additional, Plesha, Rachel J., additional, Riedel, Adric R., additional, Riley, Allyssa, additional, Sahnow, David J., additional, Sankrit, Ravi, additional, Shaw, Richard A., additional, Smith, Linda J., additional, Sohn, Sangmo Tony, additional, Som, Debopam, additional, Ubeda, Leonardo, additional, and Welty, Daniel E., additional

Published
2020
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13. ACCESS: Design and Sub-System Performance

Author

Kaiser, Mary Elizabeth, Morris, Matthew J, McCandliss, Stephan R, Rasucher, Bernard J, Kimble, Randy A, Kruk, Jeffrey W, Pelton, Russell, Mott, D. Brent, Wen, Hiting, Foltz, Roger, Quijada, Manuel A, Gum, Jeffery S, Gardner, Jonathan P, Kahle, Duncan M, Benford, Dominic J, Woodgate, Bruce E, Wright, Edward L, Feldman, Paul D, Hart, Murdock, Moos, H. Warren, Reiss, Adam G, Bohlin, Ralph, Deustua, Susana E, Dixon, W. V, and Sahnow, David J

Subjects
Astrophysics
Abstract

Establishing improved spectrophotometric standards is important for a broad range of missions and is relevant to many astrophysical problems. ACCESS, "Absolute Color Calibration Experiment for Standard Stars", is a series of rocket-borne sub-orbital missions and ground-based experiments designed to enable improvements in the precision of the astrophysical flux scale through the transfer of absolute laboratory detector standards from the National Institute of Standards and Technology (NIST) to a network of stellar standards with a calibration accuracy of 1% and a spectral resolving power of 500 across the 0.35 -1.7 micrometer bandpass.

Published
2012

14. Long-slit ultraviolet spectroscopy of Comet Austin (1990 V)

Author

Sahnow, David J., Feldman, Paul D., McCandliss, Stephan R., and Martinez, Mel E.

Subjects
Austin's comet -- Observations, Astronomy, Earth sciences
Abstract

A long-slit far-ultraviolet spectrum of Comet Austin 1990 V obtained by a sounding rocket experiment was analyzed. The results showed that OI, CI, SI and CO emissions were present in the subject. Carbon and oxygen emission spatial profiles indicated narrow enhancements typical of cometary outbursts. Atomic carbon spatial distribution was similar to that of Comet Halley and was not well matched by current CO photodissociation models.

Published
1993

15. Extending the life of the Cosmic Origins Spectrograph (COS) with new lifetime positions

Author

Siegmund, Oswald H., Sahnow, David J., Ake, Thomas, Dashtamirova, Dzhuliya, Dieterich, Serge, Fischer, Travis, Fischer, William, Frazer, Elaine, Hirschauer, Alec S., Indriolo, Nick, James, Bethan, Jedrzejewski, Robert, Johnson, Christian, Kerman, Nathaniel, Miller, Lauren, Plesha, Rachel, Rafelski, Marc, Rowlands, Kate, Roman-Duval, Julia, Sankrit, Ravi, and Soderblom, David

Published
2021
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18. ACCESS: integration, and pre-flight performance

Author

Bohlin, Ralph C., primary, Deustua, Susana E., primary, Dixon, William V., primary, Kurucz, Robert, primary, Sahnow, David J., primary, Perlmutter, Saul, primary, Peacock, Grant O., primary, Orndorff, Joseph D., primary, Hansen, Jason, primary, Kaiser, Mary Elizabeth, primary, Morris, Matthew J., primary, Kruk, Jeffrey W., primary, Kimble, Randy A., primary, Rauscher, Bernard J., primary, Wright, Edward L., primary, McCandliss, Stephan R., primary, Pelton, Russell, primary, Aldoroty, Lauren N., primary, Feldman, Paul D., primary, Moos, H. Warren, primary, Riess, Adam G., primary, and Gardner, Jonathan P., primary

Published
2017
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20. Correcting for errors due to walk and geometric distortion in the COS FUV detector

Author

Sahnow, David J., primary, Penton, Steven V., additional, Ake, Thomas B., additional, DeRosa, Gisella, additional, Ely, Justin, additional, Lockwood, Sean A., additional, Oliveira, Cristina M., additional, Plesha, Rachel, additional, Proffitt, Charles, additional, Roman-Duval, Julia, additional, Sonnentrucker, Paule, additional, Taylor, Joanna, additional, and White, James, additional

Published
2016
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21. Characterizing, controlling, and correcting distortions in the COS FUV detector

Author

Sahnow, David J., additional, Becker, George D., additional, Debes, John H., additional, Ely, Justin, additional, Lockwood, Sean A., additional, Massa, Derck, additional, Oliveira, Cristina M., additional, Penton, Steven V., additional, Proffitt, Charles, additional, Roman-Duval, Julia, additional, Sana, Hugues, additional, Sonnentrucker, Paule, additional, and Taylor, Joanna, additional

Published
2015
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22. ACCESS: status and pre-flight performance

Author

Kaiser, Mary Elizabeth, additional, Morris, Matthew J., additional, Peacock, Grant O., additional, McCandliss, Stephan R., additional, Rauscher, Bernard J., additional, Kimble, Randy A., additional, Kruk, Jeffrey W., additional, Pelton, Russell, additional, Wright, Edward L., additional, Mott, D. Brent, additional, Wen, Yiting, additional, Feldman, Paul D., additional, Moos, H. Warren, additional, Riess, Adam G., additional, Gardner, Jonathan P., additional, Benford, Dominic J., additional, Woodgate, Bruce E., additional, Bohlin, Ralph, additional, Deustua, Susana E., additional, Dixon, W. V., additional, Sahnow, David J., additional, Kurucz, Robert, additional, Lampton, Michael, additional, and Perlmutter, Saul, additional

Published
2014
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24. O VI emission in nuclear region of NGC 1068

Author

Zheng, Wei, Kriss, Gerard A., Wang, J.X., Sahnow, David J., Allen, Mark G., Dopita, Michael Andrew, Tsvetanov, Zlatan I., Bicknell, Geoffrey V., Zheng, Wei, Kriss, Gerard A., Wang, J.X., Sahnow, David J., Allen, Mark G., Dopita, Michael Andrew, Tsvetanov, Zlatan I., and Bicknell, Geoffrey V.

Abstract

FUSE Spectra of the nuclear region of NGC 1068 find strong OVI emission consisting of a pair of narrow and broad components. There is a gradient in the velocity field for the narrow O V I component of ∼ 200 kms- 1 from ∼ 2" southwest of the nucleus to ∼ 4" northeast. A similar pattern is also observed with the broad O V I component, with a gradient of ∼ 3000 kms- 1. These results are consistent with the HST/STIS findings and suggest a biconical structure in which the velocity field is mainly radial outflow. © 2009 American Institute of Physics.

Published
2009

25. Characterization, modeling, and management of the COS FUV detector lifetime

Author

Sahnow, David J., primary, Aloisi, Alessandra, additional, Bostroem, K. Azalee, additional, Debes, John, additional, Ely, Justin, additional, Hodge, Philip E., additional, Kriss, Gerard, additional, Massa, Derck, additional, Oliveira, Cristina, additional, Osten, Rachel, additional, Osterman, Steven N., additional, Penton, Steven V., additional, Proffitt, Charles, additional, Roman-Duval, Julia, additional, and Sonnentrucker, Paule, additional

Published
2013
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26. ACCESS: thermal mechanical design and performance

Author

Kaiser, Mary E., primary, Morris, Matthew J., additional, Hansen, Jason, additional, Jensen, Scott, additional, McCandliss, Stephan R., additional, Rauscher, Bernard J., additional, Kimble, Randy A., additional, Kruk, Jeffrey W., additional, Pelton, Russell, additional, Mott, D. Brent, additional, Wen, Yiting, additional, Gardner, Jonathan P., additional, Benford, Dominic J., additional, Woodgate, Bruce E., additional, Wright, Edward L., additional, Feldman, Paul D., additional, Moos, H. Warren, additional, Riess, Adam G., additional, Bohlin, Ralph, additional, Deustua, Susana E., additional, Dixon, W. V., additional, Sahnow, David J., additional, Kurucz, Robert, additional, Lampton, Michael, additional, and Perlmutter, Saul, additional

Published
2013
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27. The COS FUV channel: on-orbit performance trends and early characterization of a new detector lifetime position

Author

Sahnow, David J., primary, Aloisi, Alessandra, additional, Bostroem, K. Azalee, additional, Debes, John, additional, Duval, Julia, additional, Ely, Justin, additional, Hodge, Philip E., additional, Kriss, Gerard, additional, Lindsay, Kevin, additional, Massa, Derck, additional, Oliveira, Cristina, additional, Osten, Rachel, additional, Osterman, Steven N., additional, Penton, Steven V., additional, Proffitt, Charles, additional, Sonnentrucker, Paule, additional, and York, Brian, additional

Published
2012
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28. ACCESS: design and sub-system performance

Author

Kaiser, Mary Elizabeth, primary, Morris, Matthew J., additional, McCandliss, Stephan R., additional, Rauscher, Bernard J., additional, Kimble, Randy A., additional, Kruk, Jeffrey W., additional, Pelton, Russell, additional, Mott, D. B., additional, Wen, Yiting, additional, Foltz, Roger, additional, Quijada, Manuel A., additional, Gum, Jeffery S., additional, Gardner, Jonathan P., additional, Kahle, Duncan M., additional, Benford, Dominic J., additional, Woodgate, Bruce E., additional, Wright, Edward L., additional, Feldman, Paul D., additional, Hart, Murdock, additional, Moos, H. Warren, additional, Riess, Adam G., additional, Bohlin, Ralph, additional, Deustua, Susana E., additional, Dixon, W. V., additional, Sahnow, David J., additional, Kurucz, Robert, additional, Lampton, Michael, additional, and Perlmutter, Saul, additional

Published
2012
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29. Gain sag in the FUV detector of the Cosmic Origins Spectrograph

Author

Sahnow, David J., primary, Oliveira, Cristina, additional, Aloisi, Alessandra, additional, Hodge, Philip E., additional, Massa, Derck, additional, Osten, Rachel, additional, Proffitt, Charles, additional, Bostroem, Azalee, additional, McPhate, Jason B., additional, Béland, Stéphane, additional, Osterman, Steven N., additional, and Penton, Steven V., additional

Published
2011
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31. Commissioning of the cosmic origins spectrograph on the Hubble Space Telescope: an overview of COS servicing mission observatory verification

Author

Sahnow, David J., primary, Keyes, Charles D., additional, Ake, Thomas B., additional, Aloisi, Alessandra, additional, Béland, Stéphane, additional, Biagetti, Carl P., additional, Burgh, Eric B., additional, Chapman, George, additional, Delker, Thomas, additional, France, Kevin, additional, Friedman, Scott D., additional, Froning, Cynthia S., additional, Ghavamian, Parviz, additional, Goudfrooij, Paul, additional, Green, James C., additional, Hartig, George F., additional, Hodge, Philip E., additional, Lennon, Daniel, additional, Massa, Derck, additional, McPhate, Jason B., additional, Niemi, Sami-Matias, additional, Oliveira, Cristina, additional, Osten, Rachel, additional, Osterman, Steven N., additional, Penton, Steven V., additional, Reinhart, Merle, additional, Shaw, Brittany, additional, Smith, T. Ed, additional, Soderblom, David R., additional, Welty, Alan, additional, Wheeler, Thomas P., additional, York, Brian R., additional, and Zheng, Wei, additional

Published
2010
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32. ACCESS: design and preliminary performance

Author

Kaiser, Mary Elizabeth, primary, Kruk, Jeffrey W., additional, McCandliss, Stephan R., additional, Rauscher, Bernard J., additional, Kimble, Randy A., additional, Pelton, Russell S., additional, Sahnow, David J., additional, Dixon, W. V., additional, Feldman, Paul D., additional, Gaither, Bryan W., additional, Lazear, Justin S., additional, Moos, H. Warren, additional, Riess, Adam G., additional, Benford, Dominic J., additional, Gardner, Jonathan P., additional, Hill, Robert J., additional, Kahle, Duncan M., additional, Mott, D. Brent, additional, Waczynski, Augustyn, additional, Wen, Yiting, additional, Woodgate, Bruce E., additional, Bohlin, Ralph C., additional, Deustua, Susana E., additional, Kurucz, Robert, additional, Lampton, Michael, additional, Perlmutter, Saul, additional, and Wright, Edward L., additional

Published
2010
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33. Project Lyman

Author

McCandliss, Stephan R., primary, Kruk, Jeffrey W., additional, Blair, William P., additional, Kaiser, Mary Elizabeth, additional, Feldman, Paul D., additional, Meurer, Gerhardt R., additional, Dixon, William V., additional, Sahnow, David J., additional, Neufeld, David A., additional, Lupu, Roxana E., additional, Fleming, Brian, additional, Smee, Stephen A., additional, Andersson, B. G., additional, Moseley, Samuel H., additional, Kutyrev, Alexander S., additional, Li, Mary J., additional, Sonneborn, George, additional, Siegmund, Oswald H. W., additional, Vallerga, John V., additional, Welsh, Barry Y., additional, Stiavelli, Massimo, additional, Windhorst, Rogier A., additional, and Shapley, Alice E., additional

Published
2008
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34. ACCESS: absolute color calibration experiment for standard stars

Author

Kaiser, Mary Elizabeth, primary, Kruk, Jeffrey W., additional, McCandliss, Stephan R., additional, Sahnow, David J., additional, Rauscher, Bernard J., additional, Benford, Dominic J., additional, Bohlin, Ralph C., additional, Deustua, S. E., additional, Dixon, W. V., additional, Feldman, P. D., additional, Gardner, J. P., additional, Kimble, R. A., additional, Kurucz, R., additional, Lampton, M., additional, Moos, H. W., additional, Perlmutter, S., additional, Riess, A. G., additional, Woodgate, B. E., additional, and Wright, E. L., additional

Published
2008
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37. Preliminary calibration results for the HST/cosmic origins spectrograph

Author

Wilkinson, Erik, primary, Beland, Stephane, additional, Froning, Cynthia S., additional, Green, James C., additional, Osterman, Steven N., additional, Penton, Steven V., additional, Delker, Thomas, additional, Ebbets, Dennis, additional, Martin, Adrian, additional, McPhate, Jason, additional, Vallerga, John V., additional, Friedman, Scott D., additional, Hartig, George, additional, Keyes, Charles, additional, Leitherer, Claus, additional, Sembach, Kenneth, additional, and Sahnow, David J., additional

Published
2003
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40. ACCESS: absolute color calibration experiment for standard stars.

Author

Kaiser, Mary Elizabeth, Kruk, Jeffrey W., McCandliss, Stephan R., Sahnow, David J., Rauscher, Bernard J., Benford, Dominic J., Bohlin, Ralph C., Deustua, S. E., Dixon, W. V., Feldman, P. D., Gardner, J. P., Kimble, R. A., Kurucz, R., Lampton, M., Moos, H. W., Perlmutter, S., Riess, A. G., Woodgate, B. E., and Wright, E. L.

Published
2008
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48. On-orbit performance of the Far Ultraviolet Spectroscopic Explorer (FUSE).

Author

Sahnow, David J., Moos, Henry W., Ake III, Thomas B., Andersson, B. G., Andre, Martial, Artis, David, Berman, Alice F., Blair, William P., Brownsberger, Kenneth R., Calvani, Humberto M., Chayer, Pierre, Conard, Steven J., Feldman, Paul D., Friedman, Scott D., Fullerton, Alex W., Gaines, Geoffrey A., Green, James C., Gummin, Mark A., Joyce, J. B., and Kaiser, Mary Elizabeth

Published
2000
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