The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection

Abhishek Prakash; Timothy C. Licquia; Jeffrey A. Newman; Ashley J. Ross; Adam D. Myers; Kyle S. Dawson; Jean-Paul Kneib; Will J. Percival; Julian E. Bautista; Johan Comparat; Jeremy L. Tinker; David J. Schlegel; Rita Tojeiro; Shirley Ho; Dustin Lang; Sandhya M. Rao; Cameron K. McBride; Guangtun Ben Zhu; Joel R. Brownstein; Stephen Bailey; Adam S. Bolton; Timothee Delubac; Vivek Mariappan; Michael R. Blanton; Beth Reid; Donald P. Schneider; Hee-Jong Seo; Aurelio Carnero Rosell; Francisco Prada

doi:10.3847/0067-0049/224/2/34

The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection

Abhishek Prakash, Timothy C. Licquia, Jeffrey A. Newman, Ashley J. Ross, Adam D. Myers, Kyle S. Dawson, Jean-Paul Kneib, Will J. Percival, Julian E. Bautista, Johan Comparat, Jeremy L. Tinker, David J. Schlegel, Rita Tojeiro, Shirley Ho, Dustin Lang, Sandhya M. Rao, Cameron K. McBride, Guangtun Ben Zhu, Joel R. Brownstein, Stephen BaileyAdam S. Bolton, Timothee Delubac, Vivek Mariappan, Michael R. Blanton, Beth Reid, Donald P. Schneider, Hee-Jong Seo, Aurelio Carnero Rosell, Francisco Prada

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

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 (WISE). 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 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 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. We also 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.

Original language	English
Pages (from-to)	4478
Journal	Astrophysical Journal Supplement Series
Volume	224
Issue number	2
DOIs	https://doi.org/10.3847/0067-0049/224/2/34
Publication status	Published - 8 Jun 2016

Keywords

Astrophysics - Cosmology and Nongalactic Astrophysics
Astrophysics - Astrophysics of Galaxies

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10.3847/0067-0049/224/2/34

apjs_224_2_34
Copyright © 2016, The American Astronomical Society This work is made available online in accordance with the publisher’s policies. This is the final published version of the work which was originally published at https://dx.doi.org/10.3847/0067-0049/224/2/34
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Prakash, A., Licquia, T. C., Newman, J. A., Ross, A. J., Myers, A. D., Dawson, K. S., Kneib, J.-P., Percival, W. J., Bautista, J. E., Comparat, J., Tinker, J. L., Schlegel, D. J., Tojeiro, R., Ho, S., Lang, D., Rao, S. M., McBride, C. K., Ben Zhu, G., Brownstein, J. R., ... Prada, F. (2016). The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection. Astrophysical Journal Supplement Series, 224(2), 4478. https://doi.org/10.3847/0067-0049/224/2/34

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title = "The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection",

abstract = "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 (WISE). 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 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 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. We also 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.",

keywords = "Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies",

author = "Abhishek Prakash and Licquia, {Timothy C.} and Newman, {Jeffrey A.} and Ross, {Ashley J.} and Myers, {Adam D.} and Dawson, {Kyle S.} and Jean-Paul Kneib and Percival, {Will J.} and Bautista, {Julian E.} and Johan Comparat and Tinker, {Jeremy L.} and Schlegel, {David J.} and Rita Tojeiro and Shirley Ho and Dustin Lang and Rao, {Sandhya M.} and McBride, {Cameron K.} and {Ben Zhu}, Guangtun and Brownstein, {Joel R.} and Stephen Bailey and Bolton, {Adam S.} and Timothee Delubac and Vivek Mariappan and Blanton, {Michael R.} and Beth Reid and Schneider, {Donald P.} and Hee-Jong Seo and {Carnero Rosell}, Aurelio and Francisco Prada",

year = "2016",

month = jun,

day = "8",

doi = "10.3847/0067-0049/224/2/34",

language = "English",

volume = "224",

pages = "4478",

journal = "Astrophysical Journal Supplement Series",

issn = "0067-0049",

publisher = "American Astronomical Society",

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Prakash, A, Licquia, TC, Newman, JA, Ross, AJ, Myers, AD, Dawson, KS, Kneib, J-P, Percival, WJ, Bautista, JE, Comparat, J, Tinker, JL, Schlegel, DJ, Tojeiro, R, Ho, S, Lang, D, Rao, SM, McBride, CK, Ben Zhu, G, Brownstein, JR, Bailey, S, Bolton, AS, Delubac, T, Mariappan, V, Blanton, MR, Reid, B, Schneider, DP, Seo, H-J, Carnero Rosell, A & Prada, F 2016, 'The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection', Astrophysical Journal Supplement Series, vol. 224, no. 2, pp. 4478. https://doi.org/10.3847/0067-0049/224/2/34

TY - JOUR

T1 - The SDSS-IV extended Baryon Oscillation Spectroscopic Survey

T2 - Luminous Red Galaxy Target Selection

AU - Prakash, Abhishek

AU - Licquia, Timothy C.

AU - Newman, Jeffrey A.

AU - Ross, Ashley J.

AU - Myers, Adam D.

AU - Dawson, Kyle S.

AU - Kneib, Jean-Paul

AU - Percival, Will J.

AU - Bautista, Julian E.

AU - Comparat, Johan

AU - Tinker, Jeremy L.

AU - Schlegel, David J.

AU - Tojeiro, Rita

AU - Ho, Shirley

AU - Lang, Dustin

AU - Rao, Sandhya M.

AU - McBride, Cameron K.

AU - Ben Zhu, Guangtun

AU - Brownstein, Joel R.

AU - Bailey, Stephen

AU - Bolton, Adam S.

AU - Delubac, Timothee

AU - Mariappan, Vivek

AU - Blanton, Michael R.

AU - Reid, Beth

AU - Schneider, Donald P.

AU - Seo, Hee-Jong

AU - Carnero Rosell, Aurelio

AU - Prada, Francisco

PY - 2016/6/8

Y1 - 2016/6/8

N2 - 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 (WISE). 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 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 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. We also 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.

AB - 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 (WISE). 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 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 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. We also 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.

KW - Astrophysics - Cosmology and Nongalactic Astrophysics

KW - Astrophysics - Astrophysics of Galaxies

UR - http://adsabs.harvard.edu/abs/2015arXiv150804478P

U2 - 10.3847/0067-0049/224/2/34

DO - 10.3847/0067-0049/224/2/34

M3 - Article

SN - 0067-0049

VL - 224

SP - 4478

JO - Astrophysical Journal Supplement Series

JF - Astrophysical Journal Supplement Series

IS - 2

ER -

The SDSS-IV extended Baryon Oscillation Spectroscopic Survey: Luminous Red Galaxy Target Selection

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