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1. Clustering properties of BzK-selected galaxies in GOODS-N: environmental quenching and triggering of star formation at z ~ 2

Author

Lin, Lihwai, Dickinson, Mark, Jian, Hung-Yu, Merson, A. I., Baugh, C. M., Scott, Douglas, Foucaud, Sebastien, Wang, Wei-Hao, Yan, Chi-Hung, Yan, Hao-Jing, Cheng, Yi-Wen, Guo, Yicheng, Helly, John, Kirsten, Franz, Koo, David C., Lagos, Claudia del P., Meger, Nicole, Pope, Alexandra, Simard, Luc, Grogin, Norman A., Messias, Hugo, Wang, Shiang-Yu, Lin, Lihwai, Dickinson, Mark, Jian, Hung-Yu, Merson, A. I., Baugh, C. M., Scott, Douglas, Foucaud, Sebastien, Wang, Wei-Hao, Yan, Chi-Hung, Yan, Hao-Jing, Cheng, Yi-Wen, Guo, Yicheng, Helly, John, Kirsten, Franz, Koo, David C., Lagos, Claudia del P., Meger, Nicole, Pope, Alexandra, Simard, Luc, Grogin, Norman A., Messias, Hugo, and Wang, Shiang-Yu

Abstract

Using a sample of BzK-selected galaxies at z~2 identified from the CFHT/WIRCAM near-infrared survey of GOODS-North, we discuss the relation between star formation rate (SFR), specific star formation rate (SSFR), and stellar mass (M_{*}), and the clustering of galaxies as a function of these parameters. For star-forming galaxies (sBzKs), the UV-based SFR, corrected for extinction, scales with the stellar mass as SFR ~ M_{*}^{alpha} with alpha = 0.74+/-0.20 down to M_{*} ~ 10^{9} M_{solar}, indicating a weak dependence on the stellar mass of the SSFR. We also measure the angular correlation function and hence infer the correlation length for sBzK galaxies as a function of M_{*}, SFR, and SSFR, as well as K-band apparent magnitude. We show that passive galaxies (pBzKs) are more strongly clustered than sBzK galaxies at a given stellar mass, mirroring the color-density relation seen at lower redshifts. We also find that the correlation length of sBzK galaxies ranges from 4 to 20 h^{-1}Mpc, being a strong function of M_{K}, M_{*}, and SFR. On the other hand, the clustering dependence on SSFR changes abruptly at 2x10^{-9} yr^{-1}, which is the typical value for "main sequence" star-forming galaxies at z~2. We show that the correlation length reaches a minimum at this characteristic value, and is larger for galaxies with both smaller and larger SSFRs; a dichotomy that is only marginally implied from the predictions of the semi-analytical models. Our results suggest that there are two types of environmental effects at work at z~2. Stronger clustering for relatively quiescent galaxies implies that the environment has started to play a role in quenching star formation. At the same time, stronger clustering for galaxies with elevated SSFRs ("starbursts") might be attributed to an increased efficiency for galaxy interactions and mergers in dense environments., Comment: 7 Figures, 2 Tables, 12 Pages. Accepted by ApJ. (This version has added one more figure (now Fig. 6) and the Section 4 (Discussion) has been largely reorganized compared to the previous version.)

Published
2011
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2. CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey - The Hubble Space Telescope Observations, Imaging Data Products and Mosaics

Author

Koekemoer, Anton M., Faber, S. M., Ferguson, Henry C., Grogin, Norman A., Kocevski, Dale D., Koo, David C., Lai, Kamson, Lotz, Jennifer M., Lucas, Ray A., McGrath, Elizabeth J., Ogaz, Sara, Rajan, Abhijith, Riess, Adam G., Rodney, Steve A., Strolger, Louis, Casertano, Stefano, Castellano, Marco, Dahlen, Tomas, Dickinson, Mark, Dolch, Timothy, Fontana, Adriano, Giavalisco, Mauro, Grazian, Andrea, Guo, Yicheng, Hathi, Nimish P., Huang, Kuang-Han, van der Wel, Arjen, Yan, Hao-Jing, Acquaviva, Viviana, Almaini, David M. Alexander Omar, Ashby, Matthew L. N., Barden, Marco, Bell, Eric F., Bournaud, Frédéric, Brown, Thomas M., Caputi, Karina I., Cassata, Paolo, Challis, Peter, Chary, Ranga-Ram, Cheung, Edmond, Cirasuolo, Michele, Conselice, Christopher J., Cooray, Asantha Roshan, Croton, Darren J., Daddi, Emanuele, Davé, Romeel, de Mello, Duilia F., de Ravel, Loic, Dekel, Avishai, Donley, Jennifer L., Dunlop, James S., Dutton, Aaron A., Elbaz, David, Fazio, Giovanni G., Filippenko, Alex V., Finkelstein, Steven L., Frazer, Chris, Gardner, Jonathan P., Garnavich, Peter M., Gawiser, Eric, Gruetzbauch, Ruth, Hartley, Will G., Häussler, Boris, Herrington, Jessica, Hopkins, Philip F., Huang, Jia-Sheng, Jha, Saurabh, Johnson, Andrew, Kartaltepe, Jeyhan S., Khostovan, Ali Ahmad, Kirshner, Robert P., Lani, Caterina, Lee, Kyoung-Soo, Li, Weidong, Madau, Piero, McCarthy, Patrick J., McIntosh, Daniel H., McLure, Ross J., McPartland, Conor, Mobasher, Bahram, Moreira, Heidi, Mortlock, Alice, Moustakas, Leonidas A., Mozena, Mark, Nandra, Kirpal, Newman, Jeffrey A., Nielsen, Jennifer L., Niemi, Sami, Noeske, Kai G., Papovich, Casey J., Pentericci, Laura, Pope, Alexandra, Primack, Joel R., Ravindranath, Swara, Reddy, Naveen A., Renzini, Alvio, Rix, Hans-Walter, Robaina, Aday R., Rosario, David J., Rosati, Piero, Salimbeni, Sara, Scarlata, Claudia, Siana, Brian, Simard, Luc, Smidt, Joseph, Snyder, Diana, Somerville, Rachel S., Spinrad, Hyron, Straughn, Amber N., Telford, Olivia, Teplitz, Harry I., Trump, Jonathan R., Vargas, Carlos, Villforth, Carolin, Wagner, Cory R., Wandro, Pat, Wechsler, Risa H., Weiner, Benjamin J., Wiklind, Tommy, Wild, Vivienne, Wilson, Grant, Wuyts, Stijn, Yun, Min S., Koekemoer, Anton M., Faber, S. M., Ferguson, Henry C., Grogin, Norman A., Kocevski, Dale D., Koo, David C., Lai, Kamson, Lotz, Jennifer M., Lucas, Ray A., McGrath, Elizabeth J., Ogaz, Sara, Rajan, Abhijith, Riess, Adam G., Rodney, Steve A., Strolger, Louis, Casertano, Stefano, Castellano, Marco, Dahlen, Tomas, Dickinson, Mark, Dolch, Timothy, Fontana, Adriano, Giavalisco, Mauro, Grazian, Andrea, Guo, Yicheng, Hathi, Nimish P., Huang, Kuang-Han, van der Wel, Arjen, Yan, Hao-Jing, Acquaviva, Viviana, Almaini, David M. Alexander Omar, Ashby, Matthew L. N., Barden, Marco, Bell, Eric F., Bournaud, Frédéric, Brown, Thomas M., Caputi, Karina I., Cassata, Paolo, Challis, Peter, Chary, Ranga-Ram, Cheung, Edmond, Cirasuolo, Michele, Conselice, Christopher J., Cooray, Asantha Roshan, Croton, Darren J., Daddi, Emanuele, Davé, Romeel, de Mello, Duilia F., de Ravel, Loic, Dekel, Avishai, Donley, Jennifer L., Dunlop, James S., Dutton, Aaron A., Elbaz, David, Fazio, Giovanni G., Filippenko, Alex V., Finkelstein, Steven L., Frazer, Chris, Gardner, Jonathan P., Garnavich, Peter M., Gawiser, Eric, Gruetzbauch, Ruth, Hartley, Will G., Häussler, Boris, Herrington, Jessica, Hopkins, Philip F., Huang, Jia-Sheng, Jha, Saurabh, Johnson, Andrew, Kartaltepe, Jeyhan S., Khostovan, Ali Ahmad, Kirshner, Robert P., Lani, Caterina, Lee, Kyoung-Soo, Li, Weidong, Madau, Piero, McCarthy, Patrick J., McIntosh, Daniel H., McLure, Ross J., McPartland, Conor, Mobasher, Bahram, Moreira, Heidi, Mortlock, Alice, Moustakas, Leonidas A., Mozena, Mark, Nandra, Kirpal, Newman, Jeffrey A., Nielsen, Jennifer L., Niemi, Sami, Noeske, Kai G., Papovich, Casey J., Pentericci, Laura, Pope, Alexandra, Primack, Joel R., Ravindranath, Swara, Reddy, Naveen A., Renzini, Alvio, Rix, Hans-Walter, Robaina, Aday R., Rosario, David J., Rosati, Piero, Salimbeni, Sara, Scarlata, Claudia, Siana, Brian, Simard, Luc, Smidt, Joseph, Snyder, Diana, Somerville, Rachel S., Spinrad, Hyron, Straughn, Amber N., Telford, Olivia, Teplitz, Harry I., Trump, Jonathan R., Vargas, Carlos, Villforth, Carolin, Wagner, Cory R., Wandro, Pat, Wechsler, Risa H., Weiner, Benjamin J., Wiklind, Tommy, Wild, Vivienne, Wilson, Grant, Wuyts, Stijn, and Yun, Min S.

Abstract

This paper describes the Hubble Space Telescope imaging data products and data reduction procedures for the Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS). This survey is designed to document the evolution of galaxies and black holes at $z\sim1.5-8$, and to study Type Ia SNe beyond $z>1.5$. Five premier multi-wavelength sky regions are selected, each with extensive multiwavelength observations. The primary CANDELS data consist of imaging obtained in the Wide Field Camera 3 / infrared channel (WFC3/IR) and UVIS channel, along with the Advanced Camera for Surveys (ACS). The CANDELS/Deep survey covers \sim125 square arcminutes within GOODS-N and GOODS-S, while the remainder consists of the CANDELS/Wide survey, achieving a total of \sim800 square arcminutes across GOODS and three additional fields (EGS, COSMOS, and UDS). We summarize the observational aspects of the survey as motivated by the scientific goals and present a detailed description of the data reduction procedures and products from the survey. Our data reduction methods utilize the most up to date calibration files and image combination procedures. We have paid special attention to correcting a range of instrumental effects, including CTE degradation for ACS, removal of electronic bias-striping present in ACS data after SM4, and persistence effects and other artifacts in WFC3/IR. For each field, we release mosaics for individual epochs and eventual mosaics containing data from all epochs combined, to facilitate photometric variability studies and the deepest possible photometry. A more detailed overview of the science goals and observational design of the survey are presented in a companion paper., Comment: 39 pages, 25 figures

Published
2011
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3. CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey

Author

Grogin, Norman A., Kocevski, Dale D., Faber, S. M., Ferguson, Henry C., Koekemoer, Anton M., Riess, Adam G., Acquaviva, Viviana, Alexander, David M., Almaini, Omar, Ashby, Matthew L. N., Barden, Marco, Bell, Eric F., Bournaud, Frédéric, Brown, Thomas M., Caputi, Karina I., Casertano, Stefano, Cassata, Paolo, Castellano, Marco, Challis, Peter, Chary, Ranga-Ram, Cheung, Edmond, Cirasuolo, Michele, Conselice, Christopher J., Cooray, Asantha Roshan, Croton, Darren J., Daddi, Emanuele, Dahlen, Tomas, Davé, Romeel, de Mello, Duília F., Dekel, Avishai, Dickinson, Mark, Dolch, Timothy, Donley, Jennifer L., Dunlop, James S., Dutton, Aaron A., Elbaz, David, Fazio, Giovanni G., Filippenko, Alexei V., Finkelstein, Steven L., Fontana, Adriano, Gardner, Jonathan P., Garnavich, Peter M., Gawiser, Eric, Giavalisco, Mauro, Grazian, Andrea, Guo, Yicheng, Hathi, Nimish P., Häussler, Boris, Hopkins, Philip F., Huang, Jia-Sheng, Huang, Kuang-Han, Jha, Saurabh W., Kartaltepe, Jeyhan S., Kirshner, Robert P., Koo, David C., Lai, Kamson, Lee, Kyoung-Soo, Li, Weidong, Lotz, Jennifer M., Lucas, Ray A., Madau, Piero, McCarthy, Patrick J., McGrath, Elizabeth J., McIntosh, Daniel H., McLure, Ross J., Mobasher, Bahram, Moustakas, Leonidas A., Mozena, Mark, Nandra, Kirpal, Newman, Jeffrey A., Niemi, Sami-Matias, Noeske, Kai G., Papovich, Casey J., Pentericci, Laura, Pope, Alexandra, Primack, Joel R., Rajan, Abhijith, Ravindranath, Swara, Reddy, Naveen A., Renzini, Alvio, Rix, Hans-Walter, Robaina, Aday R., Rodney, Steven A., Rosario, David J., Rosati, Piero, Salimbeni, Sara, Scarlata, Claudia, Siana, Brian, Simard, Luc, Smidt, Joseph, Somerville, Rachel S., Spinrad, Hyron, Straughn, Amber N., Strolger, Louis-Gregory, Telford, Olivia, Teplitz, Harry I., Trump, Jonathan R., van der Wel, Arjen, Villforth, Carolin, Wechsler, Risa H., Weiner, Benjamin J., Wiklind, Tommy, Wild, Vivienne, Wilson, Grant, Wuyts, Stijn, Yan, Hao-Jing, Yun, Min S., Grogin, Norman A., Kocevski, Dale D., Faber, S. M., Ferguson, Henry C., Koekemoer, Anton M., Riess, Adam G., Acquaviva, Viviana, Alexander, David M., Almaini, Omar, Ashby, Matthew L. N., Barden, Marco, Bell, Eric F., Bournaud, Frédéric, Brown, Thomas M., Caputi, Karina I., Casertano, Stefano, Cassata, Paolo, Castellano, Marco, Challis, Peter, Chary, Ranga-Ram, Cheung, Edmond, Cirasuolo, Michele, Conselice, Christopher J., Cooray, Asantha Roshan, Croton, Darren J., Daddi, Emanuele, Dahlen, Tomas, Davé, Romeel, de Mello, Duília F., Dekel, Avishai, Dickinson, Mark, Dolch, Timothy, Donley, Jennifer L., Dunlop, James S., Dutton, Aaron A., Elbaz, David, Fazio, Giovanni G., Filippenko, Alexei V., Finkelstein, Steven L., Fontana, Adriano, Gardner, Jonathan P., Garnavich, Peter M., Gawiser, Eric, Giavalisco, Mauro, Grazian, Andrea, Guo, Yicheng, Hathi, Nimish P., Häussler, Boris, Hopkins, Philip F., Huang, Jia-Sheng, Huang, Kuang-Han, Jha, Saurabh W., Kartaltepe, Jeyhan S., Kirshner, Robert P., Koo, David C., Lai, Kamson, Lee, Kyoung-Soo, Li, Weidong, Lotz, Jennifer M., Lucas, Ray A., Madau, Piero, McCarthy, Patrick J., McGrath, Elizabeth J., McIntosh, Daniel H., McLure, Ross J., Mobasher, Bahram, Moustakas, Leonidas A., Mozena, Mark, Nandra, Kirpal, Newman, Jeffrey A., Niemi, Sami-Matias, Noeske, Kai G., Papovich, Casey J., Pentericci, Laura, Pope, Alexandra, Primack, Joel R., Rajan, Abhijith, Ravindranath, Swara, Reddy, Naveen A., Renzini, Alvio, Rix, Hans-Walter, Robaina, Aday R., Rodney, Steven A., Rosario, David J., Rosati, Piero, Salimbeni, Sara, Scarlata, Claudia, Siana, Brian, Simard, Luc, Smidt, Joseph, Somerville, Rachel S., Spinrad, Hyron, Straughn, Amber N., Strolger, Louis-Gregory, Telford, Olivia, Teplitz, Harry I., Trump, Jonathan R., van der Wel, Arjen, Villforth, Carolin, Wechsler, Risa H., Weiner, Benjamin J., Wiklind, Tommy, Wild, Vivienne, Wilson, Grant, Wuyts, Stijn, Yan, Hao-Jing, and Yun, Min S.

Abstract

The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) is designed to document the first third of galactic evolution, over the approximate redshift (z) range 8--1.5. It will image >250,000 distant galaxies using three separate cameras on the Hubble Space Telescope, from the mid-ultraviolet to the near-infrared, and will find and measure Type Ia supernovae at z>1.5 to test their accuracy as standardizable candles for cosmology. Five premier multi-wavelength sky regions are selected, each with extensive ancillary data. The use of five widely separated fields mitigates cosmic variance and yields statistically robust and complete samples of galaxies down to a stellar mass of 10^9 M_\odot to z \approx 2, reaching the knee of the ultraviolet luminosity function (UVLF) of galaxies to z \approx 8. The survey covers approximately 800 arcmin^2 and is divided into two parts. The CANDELS/Deep survey (5\sigma\ point-source limit H=27.7 mag) covers \sim 125 arcmin^2 within GOODS-N and GOODS-S. The CANDELS/Wide survey includes GOODS and three additional fields (EGS, COSMOS, and UDS) and covers the full area to a 5\sigma\ point-source limit of H \gtrsim 27.0 mag. Together with the Hubble Ultra Deep Fields, the strategy creates a three-tiered "wedding cake" approach that has proven efficient for extragalactic surveys. Data from the survey are nonproprietary and are useful for a wide variety of science investigations. In this paper, we describe the basic motivations for the survey, the CANDELS team science goals and the resulting observational requirements, the field selection and geometry, and the observing design. The Hubble data processing and products are described in a companion paper., Comment: Submitted to Astrophysical Journal Supplement Series; Revised version, subsequent to referee report

Published
2011
Full Text
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4. Clustering properties of BzK-selected galaxies in GOODS-N: environmental quenching and triggering of star formation at z ~ 2

Author

Lin, Lihwai, Dickinson, Mark, Jian, Hung-Yu, Merson, A. I., Baugh, C. M., Scott, Douglas, Foucaud, Sebastien, Wang, Wei-Hao, Yan, Chi-Hung, Yan, Hao-Jing, Cheng, Yi-Wen, Guo, Yicheng, Helly, John, Kirsten, Franz, Koo, David C., Lagos, Claudia del P., Meger, Nicole, Pope, Alexandra, Simard, Luc, Grogin, Norman A., Messias, Hugo, Wang, Shiang-Yu, Lin, Lihwai, Dickinson, Mark, Jian, Hung-Yu, Merson, A. I., Baugh, C. M., Scott, Douglas, Foucaud, Sebastien, Wang, Wei-Hao, Yan, Chi-Hung, Yan, Hao-Jing, Cheng, Yi-Wen, Guo, Yicheng, Helly, John, Kirsten, Franz, Koo, David C., Lagos, Claudia del P., Meger, Nicole, Pope, Alexandra, Simard, Luc, Grogin, Norman A., Messias, Hugo, and Wang, Shiang-Yu

Abstract

Using a sample of BzK-selected galaxies at z~2 identified from the CFHT/WIRCAM near-infrared survey of GOODS-North, we discuss the relation between star formation rate (SFR), specific star formation rate (SSFR), and stellar mass (M_{*}), and the clustering of galaxies as a function of these parameters. For star-forming galaxies (sBzKs), the UV-based SFR, corrected for extinction, scales with the stellar mass as SFR ~ M_{*}^{alpha} with alpha = 0.74+/-0.20 down to M_{*} ~ 10^{9} M_{solar}, indicating a weak dependence on the stellar mass of the SSFR. We also measure the angular correlation function and hence infer the correlation length for sBzK galaxies as a function of M_{*}, SFR, and SSFR, as well as K-band apparent magnitude. We show that passive galaxies (pBzKs) are more strongly clustered than sBzK galaxies at a given stellar mass, mirroring the color-density relation seen at lower redshifts. We also find that the correlation length of sBzK galaxies ranges from 4 to 20 h^{-1}Mpc, being a strong function of M_{K}, M_{*}, and SFR. On the other hand, the clustering dependence on SSFR changes abruptly at 2x10^{-9} yr^{-1}, which is the typical value for "main sequence" star-forming galaxies at z~2. We show that the correlation length reaches a minimum at this characteristic value, and is larger for galaxies with both smaller and larger SSFRs; a dichotomy that is only marginally implied from the predictions of the semi-analytical models. Our results suggest that there are two types of environmental effects at work at z~2. Stronger clustering for relatively quiescent galaxies implies that the environment has started to play a role in quenching star formation. At the same time, stronger clustering for galaxies with elevated SSFRs ("starbursts") might be attributed to an increased efficiency for galaxy interactions and mergers in dense environments., Comment: 7 Figures, 2 Tables, 12 Pages. Accepted by ApJ. (This version has added one more figure (now Fig. 6) and the Section 4 (Discussion) has been largely reorganized compared to the previous version.)

Published
2011
Full Text
View/download PDF

5. CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey

Author

Grogin, Norman A., Kocevski, Dale D., Faber, S. M., Ferguson, Henry C., Koekemoer, Anton M., Riess, Adam G., Acquaviva, Viviana, Alexander, David M., Almaini, Omar, Ashby, Matthew L. N., Barden, Marco, Bell, Eric F., Bournaud, Frédéric, Brown, Thomas M., Caputi, Karina I., Casertano, Stefano, Cassata, Paolo, Castellano, Marco, Challis, Peter, Chary, Ranga-Ram, Cheung, Edmond, Cirasuolo, Michele, Conselice, Christopher J., Cooray, Asantha Roshan, Croton, Darren J., Daddi, Emanuele, Dahlen, Tomas, Davé, Romeel, de Mello, Duília F., Dekel, Avishai, Dickinson, Mark, Dolch, Timothy, Donley, Jennifer L., Dunlop, James S., Dutton, Aaron A., Elbaz, David, Fazio, Giovanni G., Filippenko, Alexei V., Finkelstein, Steven L., Fontana, Adriano, Gardner, Jonathan P., Garnavich, Peter M., Gawiser, Eric, Giavalisco, Mauro, Grazian, Andrea, Guo, Yicheng, Hathi, Nimish P., Häussler, Boris, Hopkins, Philip F., Huang, Jia-Sheng, Huang, Kuang-Han, Jha, Saurabh W., Kartaltepe, Jeyhan S., Kirshner, Robert P., Koo, David C., Lai, Kamson, Lee, Kyoung-Soo, Li, Weidong, Lotz, Jennifer M., Lucas, Ray A., Madau, Piero, McCarthy, Patrick J., McGrath, Elizabeth J., McIntosh, Daniel H., McLure, Ross J., Mobasher, Bahram, Moustakas, Leonidas A., Mozena, Mark, Nandra, Kirpal, Newman, Jeffrey A., Niemi, Sami-Matias, Noeske, Kai G., Papovich, Casey J., Pentericci, Laura, Pope, Alexandra, Primack, Joel R., Rajan, Abhijith, Ravindranath, Swara, Reddy, Naveen A., Renzini, Alvio, Rix, Hans-Walter, Robaina, Aday R., Rodney, Steven A., Rosario, David J., Rosati, Piero, Salimbeni, Sara, Scarlata, Claudia, Siana, Brian, Simard, Luc, Smidt, Joseph, Somerville, Rachel S., Spinrad, Hyron, Straughn, Amber N., Strolger, Louis-Gregory, Telford, Olivia, Teplitz, Harry I., Trump, Jonathan R., van der Wel, Arjen, Villforth, Carolin, Wechsler, Risa H., Weiner, Benjamin J., Wiklind, Tommy, Wild, Vivienne, Wilson, Grant, Wuyts, Stijn, Yan, Hao-Jing, Yun, Min S., Grogin, Norman A., Kocevski, Dale D., Faber, S. M., Ferguson, Henry C., Koekemoer, Anton M., Riess, Adam G., Acquaviva, Viviana, Alexander, David M., Almaini, Omar, Ashby, Matthew L. N., Barden, Marco, Bell, Eric F., Bournaud, Frédéric, Brown, Thomas M., Caputi, Karina I., Casertano, Stefano, Cassata, Paolo, Castellano, Marco, Challis, Peter, Chary, Ranga-Ram, Cheung, Edmond, Cirasuolo, Michele, Conselice, Christopher J., Cooray, Asantha Roshan, Croton, Darren J., Daddi, Emanuele, Dahlen, Tomas, Davé, Romeel, de Mello, Duília F., Dekel, Avishai, Dickinson, Mark, Dolch, Timothy, Donley, Jennifer L., Dunlop, James S., Dutton, Aaron A., Elbaz, David, Fazio, Giovanni G., Filippenko, Alexei V., Finkelstein, Steven L., Fontana, Adriano, Gardner, Jonathan P., Garnavich, Peter M., Gawiser, Eric, Giavalisco, Mauro, Grazian, Andrea, Guo, Yicheng, Hathi, Nimish P., Häussler, Boris, Hopkins, Philip F., Huang, Jia-Sheng, Huang, Kuang-Han, Jha, Saurabh W., Kartaltepe, Jeyhan S., Kirshner, Robert P., Koo, David C., Lai, Kamson, Lee, Kyoung-Soo, Li, Weidong, Lotz, Jennifer M., Lucas, Ray A., Madau, Piero, McCarthy, Patrick J., McGrath, Elizabeth J., McIntosh, Daniel H., McLure, Ross J., Mobasher, Bahram, Moustakas, Leonidas A., Mozena, Mark, Nandra, Kirpal, Newman, Jeffrey A., Niemi, Sami-Matias, Noeske, Kai G., Papovich, Casey J., Pentericci, Laura, Pope, Alexandra, Primack, Joel R., Rajan, Abhijith, Ravindranath, Swara, Reddy, Naveen A., Renzini, Alvio, Rix, Hans-Walter, Robaina, Aday R., Rodney, Steven A., Rosario, David J., Rosati, Piero, Salimbeni, Sara, Scarlata, Claudia, Siana, Brian, Simard, Luc, Smidt, Joseph, Somerville, Rachel S., Spinrad, Hyron, Straughn, Amber N., Strolger, Louis-Gregory, Telford, Olivia, Teplitz, Harry I., Trump, Jonathan R., van der Wel, Arjen, Villforth, Carolin, Wechsler, Risa H., Weiner, Benjamin J., Wiklind, Tommy, Wild, Vivienne, Wilson, Grant, Wuyts, Stijn, Yan, Hao-Jing, and Yun, Min S.

Abstract

The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) is designed to document the first third of galactic evolution, over the approximate redshift (z) range 8--1.5. It will image >250,000 distant galaxies using three separate cameras on the Hubble Space Telescope, from the mid-ultraviolet to the near-infrared, and will find and measure Type Ia supernovae at z>1.5 to test their accuracy as standardizable candles for cosmology. Five premier multi-wavelength sky regions are selected, each with extensive ancillary data. The use of five widely separated fields mitigates cosmic variance and yields statistically robust and complete samples of galaxies down to a stellar mass of 10^9 M_\odot to z \approx 2, reaching the knee of the ultraviolet luminosity function (UVLF) of galaxies to z \approx 8. The survey covers approximately 800 arcmin^2 and is divided into two parts. The CANDELS/Deep survey (5\sigma\ point-source limit H=27.7 mag) covers \sim 125 arcmin^2 within GOODS-N and GOODS-S. The CANDELS/Wide survey includes GOODS and three additional fields (EGS, COSMOS, and UDS) and covers the full area to a 5\sigma\ point-source limit of H \gtrsim 27.0 mag. Together with the Hubble Ultra Deep Fields, the strategy creates a three-tiered "wedding cake" approach that has proven efficient for extragalactic surveys. Data from the survey are nonproprietary and are useful for a wide variety of science investigations. In this paper, we describe the basic motivations for the survey, the CANDELS team science goals and the resulting observational requirements, the field selection and geometry, and the observing design. The Hubble data processing and products are described in a companion paper., Comment: Submitted to Astrophysical Journal Supplement Series; Revised version, subsequent to referee report

Published
2011
Full Text
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6. CANDELS: The Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey - The Hubble Space Telescope Observations, Imaging Data Products and Mosaics

Author

Koekemoer, Anton M., Faber, S. M., Ferguson, Henry C., Grogin, Norman A., Kocevski, Dale D., Koo, David C., Lai, Kamson, Lotz, Jennifer M., Lucas, Ray A., McGrath, Elizabeth J., Ogaz, Sara, Rajan, Abhijith, Riess, Adam G., Rodney, Steve A., Strolger, Louis, Casertano, Stefano, Castellano, Marco, Dahlen, Tomas, Dickinson, Mark, Dolch, Timothy, Fontana, Adriano, Giavalisco, Mauro, Grazian, Andrea, Guo, Yicheng, Hathi, Nimish P., Huang, Kuang-Han, van der Wel, Arjen, Yan, Hao-Jing, Acquaviva, Viviana, Almaini, David M. Alexander Omar, Ashby, Matthew L. N., Barden, Marco, Bell, Eric F., Bournaud, Frédéric, Brown, Thomas M., Caputi, Karina I., Cassata, Paolo, Challis, Peter, Chary, Ranga-Ram, Cheung, Edmond, Cirasuolo, Michele, Conselice, Christopher J., Cooray, Asantha Roshan, Croton, Darren J., Daddi, Emanuele, Davé, Romeel, de Mello, Duilia F., de Ravel, Loic, Dekel, Avishai, Donley, Jennifer L., Dunlop, James S., Dutton, Aaron A., Elbaz, David, Fazio, Giovanni G., Filippenko, Alex V., Finkelstein, Steven L., Frazer, Chris, Gardner, Jonathan P., Garnavich, Peter M., Gawiser, Eric, Gruetzbauch, Ruth, Hartley, Will G., Häussler, Boris, Herrington, Jessica, Hopkins, Philip F., Huang, Jia-Sheng, Jha, Saurabh, Johnson, Andrew, Kartaltepe, Jeyhan S., Khostovan, Ali Ahmad, Kirshner, Robert P., Lani, Caterina, Lee, Kyoung-Soo, Li, Weidong, Madau, Piero, McCarthy, Patrick J., McIntosh, Daniel H., McLure, Ross J., McPartland, Conor, Mobasher, Bahram, Moreira, Heidi, Mortlock, Alice, Moustakas, Leonidas A., Mozena, Mark, Nandra, Kirpal, Newman, Jeffrey A., Nielsen, Jennifer L., Niemi, Sami, Noeske, Kai G., Papovich, Casey J., Pentericci, Laura, Pope, Alexandra, Primack, Joel R., Ravindranath, Swara, Reddy, Naveen A., Renzini, Alvio, Rix, Hans-Walter, Robaina, Aday R., Rosario, David J., Rosati, Piero, Salimbeni, Sara, Scarlata, Claudia, Siana, Brian, Simard, Luc, Smidt, Joseph, Snyder, Diana, Somerville, Rachel S., Spinrad, Hyron, Straughn, Amber N., Telford, Olivia, Teplitz, Harry I., Trump, Jonathan R., Vargas, Carlos, Villforth, Carolin, Wagner, Cory R., Wandro, Pat, Wechsler, Risa H., Weiner, Benjamin J., Wiklind, Tommy, Wild, Vivienne, Wilson, Grant, Wuyts, Stijn, Yun, Min S., Koekemoer, Anton M., Faber, S. M., Ferguson, Henry C., Grogin, Norman A., Kocevski, Dale D., Koo, David C., Lai, Kamson, Lotz, Jennifer M., Lucas, Ray A., McGrath, Elizabeth J., Ogaz, Sara, Rajan, Abhijith, Riess, Adam G., Rodney, Steve A., Strolger, Louis, Casertano, Stefano, Castellano, Marco, Dahlen, Tomas, Dickinson, Mark, Dolch, Timothy, Fontana, Adriano, Giavalisco, Mauro, Grazian, Andrea, Guo, Yicheng, Hathi, Nimish P., Huang, Kuang-Han, van der Wel, Arjen, Yan, Hao-Jing, Acquaviva, Viviana, Almaini, David M. Alexander Omar, Ashby, Matthew L. N., Barden, Marco, Bell, Eric F., Bournaud, Frédéric, Brown, Thomas M., Caputi, Karina I., Cassata, Paolo, Challis, Peter, Chary, Ranga-Ram, Cheung, Edmond, Cirasuolo, Michele, Conselice, Christopher J., Cooray, Asantha Roshan, Croton, Darren J., Daddi, Emanuele, Davé, Romeel, de Mello, Duilia F., de Ravel, Loic, Dekel, Avishai, Donley, Jennifer L., Dunlop, James S., Dutton, Aaron A., Elbaz, David, Fazio, Giovanni G., Filippenko, Alex V., Finkelstein, Steven L., Frazer, Chris, Gardner, Jonathan P., Garnavich, Peter M., Gawiser, Eric, Gruetzbauch, Ruth, Hartley, Will G., Häussler, Boris, Herrington, Jessica, Hopkins, Philip F., Huang, Jia-Sheng, Jha, Saurabh, Johnson, Andrew, Kartaltepe, Jeyhan S., Khostovan, Ali Ahmad, Kirshner, Robert P., Lani, Caterina, Lee, Kyoung-Soo, Li, Weidong, Madau, Piero, McCarthy, Patrick J., McIntosh, Daniel H., McLure, Ross J., McPartland, Conor, Mobasher, Bahram, Moreira, Heidi, Mortlock, Alice, Moustakas, Leonidas A., Mozena, Mark, Nandra, Kirpal, Newman, Jeffrey A., Nielsen, Jennifer L., Niemi, Sami, Noeske, Kai G., Papovich, Casey J., Pentericci, Laura, Pope, Alexandra, Primack, Joel R., Ravindranath, Swara, Reddy, Naveen A., Renzini, Alvio, Rix, Hans-Walter, Robaina, Aday R., Rosario, David J., Rosati, Piero, Salimbeni, Sara, Scarlata, Claudia, Siana, Brian, Simard, Luc, Smidt, Joseph, Snyder, Diana, Somerville, Rachel S., Spinrad, Hyron, Straughn, Amber N., Telford, Olivia, Teplitz, Harry I., Trump, Jonathan R., Vargas, Carlos, Villforth, Carolin, Wagner, Cory R., Wandro, Pat, Wechsler, Risa H., Weiner, Benjamin J., Wiklind, Tommy, Wild, Vivienne, Wilson, Grant, Wuyts, Stijn, and Yun, Min S.

Abstract

This paper describes the Hubble Space Telescope imaging data products and data reduction procedures for the Cosmic Assembly Near-IR Deep Extragalactic Legacy Survey (CANDELS). This survey is designed to document the evolution of galaxies and black holes at $z\sim1.5-8$, and to study Type Ia SNe beyond $z>1.5$. Five premier multi-wavelength sky regions are selected, each with extensive multiwavelength observations. The primary CANDELS data consist of imaging obtained in the Wide Field Camera 3 / infrared channel (WFC3/IR) and UVIS channel, along with the Advanced Camera for Surveys (ACS). The CANDELS/Deep survey covers \sim125 square arcminutes within GOODS-N and GOODS-S, while the remainder consists of the CANDELS/Wide survey, achieving a total of \sim800 square arcminutes across GOODS and three additional fields (EGS, COSMOS, and UDS). We summarize the observational aspects of the survey as motivated by the scientific goals and present a detailed description of the data reduction procedures and products from the survey. Our data reduction methods utilize the most up to date calibration files and image combination procedures. We have paid special attention to correcting a range of instrumental effects, including CTE degradation for ACS, removal of electronic bias-striping present in ACS data after SM4, and persistence effects and other artifacts in WFC3/IR. For each field, we release mosaics for individual epochs and eventual mosaics containing data from all epochs combined, to facilitate photometric variability studies and the deepest possible photometry. A more detailed overview of the science goals and observational design of the survey are presented in a companion paper., Comment: 39 pages, 25 figures

Published
2011
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