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Title: The SDSS-IV extended baryon oscillation spectroscopic survey: Luminous red galaxy target selection

Abstract

Here, we describe the algorithm used to select the luminous red galaxy (LRG) sample for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV) using photometric data from both the SDSS and the Wide-field Infrared Survey Explorer. LRG targets are required to meet a set of color selection criteria and have z-band and i-band MODEL magnitudes z < 19.95 and 19.9 < i < 21.8, respectively. Our algorithm selects roughly 50 LRG targets per square degree, the great majority of which lie in the redshift range 0.6 < z < 1.0 (median redshift 0.71). We also demonstrate that our methods are highly effective at eliminating stellar contamination and lower-redshift galaxies. We perform a number of tests using spectroscopic data from SDSS-III/BOSS ancillary programs to determine the redshift reliability of our target selection and its ability to meet the science requirements of eBOSS. The SDSS spectra are of high enough signal-to-noise ratio that at least ~89% of the target sample yields secure redshift measurements. Finally, we present tests of the uniformity and homogeneity of the sample, demonstrating that it should be clean enough for studies of the large-scale structure of the universe at higher redshiftsmore » than SDSS-III/BOSS LRGs reached.« less

Authors:
ORCiD logo [1];  [1];  [1];  [2];  [3]; ORCiD logo [4];  [5];  [6];  [4];  [7];  [8];  [9];  [10];  [11];  [11];  [1];  [12];  [13];  [4];  [9] more »;  [4];  [14];  [4];  [8];  [15];  [16];  [17]; ORCiD logo [18];  [19] « less
  1. Univ. of Pittsburgh, PA (United States). Dept. of Physics and Astronomy
  2. The Ohio State Univ., Columbus, OH (United States). Center for Cosmology and Astro-Particle Physics; Univ. of Portsmouth (United Kingdom). Inst. of Cosmology and Gravitation
  3. Univ. of Wyoming, Laramie, WY (United States). Dept. of Physics and Astronomy
  4. Univ. of Utah, Salt Lake City, UT (United States). Dept. of Physics and Astronomy
  5. Ecole Polytechnique Federale Lausanne (Switzlerland). Lab. of Astrophysics; Aix-Marseille Univ., and CNRS/IN2P3, Marseille (France)
  6. Univ. of Portsmouth (United Kingdom). Inst. of Cosmology and Gravitation
  7. Autonomous Univ. of Madrid (Spain). Inst. of Theoretical Physics
  8. New York Univ. (NYU), NY (United States). Center for Cosmology and Particle Physics
  9. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  10. School of Physics and Astronomy, St. Andrews (United Kingdom)
  11. Carnegie Mellon Univ., Pittsburgh, PA (United States). Bruce and Astrid McWilliams Center for Cosmology
  12. Harvard Univ., Cambridge, MA (United States). Harvard-Smithsonian Center for Astrophysics
  13. Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Physics and Astronomy
  14. Ecole Polytechnique Federale Lausanne (Switzlerland). Lab. of Astrophysics
  15. Univ. of California, Berkeley, CA (United States). Berkeley Center for Cosmological Physics
  16. Pennsylvania State Univ., University Park, PA (United States). Dept. of Astronomy and Astrophysics
  17. Ohio Univ., Athens, OH (United States). Dept. of Physics and Astronomy
  18. National Observatory and Interinstitutional Lab. of Astronomy, Rio de Janeiro (Brazil)
  19. Autonomous Univ. of Madrid (Spain). Inst. of Theoretical Physics; Campus of International Excellence, Madrid (Spain); Inst. of Astrophysics of Andalucia (CSIC), Granada (Spain)
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1379373
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Accepted Manuscript
Journal Name:
The Astrophysical Journal. Supplement Series (Online)
Additional Journal Information:
Journal Name: The Astrophysical Journal. Supplement Series (Online); Journal Volume: 224; Journal Issue: 2; Journal ID: ISSN 1538-4365
Publisher:
American Astronomical Society/IOP
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; catalogs; cosmology: observations; galaxies: distances and redshifts; galaxies: photometery; methods: data analysis; galaxies: general

Citation Formats

Prakash, Abhishek, Licquia, Timothy C., Newman, Jeffrey A., Ross, Ashley J., Myers, Adam D., Dawson, Kyle S., Kneib, Jean-Paul, Percival, Will J., Bautista, Julian E., Comparat, Johan, Tinker, Jeremy L., Schlegel, David J., Tojeiro, Rita, Ho, Shirley, Lang, Dustin, Rao, Sandhya M., McBride, Cameron K., Zhu, Guangtun Ben, Brownstein, Joel R., Bailey, Stephen, Bolton, Adam S., Delubac, Timothée, Mariappan, Vivek, Blanton, Michael R., Reid, Beth, Schneider, Donald P., Seo, Hee-Jong, Rosell, Aurelio Carnero, and Prada, Francisco. The SDSS-IV extended baryon oscillation spectroscopic survey: Luminous red galaxy target selection. United States: N. p., 2016. Web. doi:10.3847/0067-0049/224/2/34.
Prakash, Abhishek, Licquia, Timothy C., Newman, Jeffrey A., Ross, Ashley J., Myers, Adam D., Dawson, Kyle S., Kneib, Jean-Paul, Percival, Will J., Bautista, Julian E., Comparat, Johan, Tinker, Jeremy L., Schlegel, David J., Tojeiro, Rita, Ho, Shirley, Lang, Dustin, Rao, Sandhya M., McBride, Cameron K., Zhu, Guangtun Ben, Brownstein, Joel R., Bailey, Stephen, Bolton, Adam S., Delubac, Timothée, Mariappan, Vivek, Blanton, Michael R., Reid, Beth, Schneider, Donald P., Seo, Hee-Jong, Rosell, Aurelio Carnero, & Prada, Francisco. The SDSS-IV extended baryon oscillation spectroscopic survey: Luminous red galaxy target selection. United States. doi:10.3847/0067-0049/224/2/34.
Prakash, Abhishek, Licquia, Timothy C., Newman, Jeffrey A., Ross, Ashley J., Myers, Adam D., Dawson, Kyle S., Kneib, Jean-Paul, Percival, Will J., Bautista, Julian E., Comparat, Johan, Tinker, Jeremy L., Schlegel, David J., Tojeiro, Rita, Ho, Shirley, Lang, Dustin, Rao, Sandhya M., McBride, Cameron K., Zhu, Guangtun Ben, Brownstein, Joel R., Bailey, Stephen, Bolton, Adam S., Delubac, Timothée, Mariappan, Vivek, Blanton, Michael R., Reid, Beth, Schneider, Donald P., Seo, Hee-Jong, Rosell, Aurelio Carnero, and Prada, Francisco. Wed . "The SDSS-IV extended baryon oscillation spectroscopic survey: Luminous red galaxy target selection". United States. doi:10.3847/0067-0049/224/2/34. https://www.osti.gov/servlets/purl/1379373.
@article{osti_1379373,
title = {The SDSS-IV extended baryon oscillation spectroscopic survey: Luminous red galaxy target selection},
author = {Prakash, Abhishek and Licquia, Timothy C. and Newman, Jeffrey A. and Ross, Ashley J. and Myers, Adam D. and Dawson, Kyle S. and Kneib, Jean-Paul and Percival, Will J. and Bautista, Julian E. and Comparat, Johan and Tinker, Jeremy L. and Schlegel, David J. and Tojeiro, Rita and Ho, Shirley and Lang, Dustin and Rao, Sandhya M. and McBride, Cameron K. and Zhu, Guangtun Ben and Brownstein, Joel R. and Bailey, Stephen and Bolton, Adam S. and Delubac, Timothée and Mariappan, Vivek and Blanton, Michael R. and Reid, Beth and Schneider, Donald P. and Seo, Hee-Jong and Rosell, Aurelio Carnero and Prada, Francisco},
abstractNote = {Here, we describe the algorithm used to select the luminous red galaxy (LRG) sample for the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV) using photometric data from both the SDSS and the Wide-field Infrared Survey Explorer. LRG targets are required to meet a set of color selection criteria and have z-band and i-band MODEL magnitudes z < 19.95 and 19.9 < i < 21.8, respectively. Our algorithm selects roughly 50 LRG targets per square degree, the great majority of which lie in the redshift range 0.6 < z < 1.0 (median redshift 0.71). We also demonstrate that our methods are highly effective at eliminating stellar contamination and lower-redshift galaxies. We perform a number of tests using spectroscopic data from SDSS-III/BOSS ancillary programs to determine the redshift reliability of our target selection and its ability to meet the science requirements of eBOSS. The SDSS spectra are of high enough signal-to-noise ratio that at least ~89% of the target sample yields secure redshift measurements. Finally, we present tests of the uniformity and homogeneity of the sample, demonstrating that it should be clean enough for studies of the large-scale structure of the universe at higher redshifts than SDSS-III/BOSS LRGs reached.},
doi = {10.3847/0067-0049/224/2/34},
journal = {The Astrophysical Journal. Supplement Series (Online)},
number = 2,
volume = 224,
place = {United States},
year = {2016},
month = {6}
}

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