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, Timothée Delubac, Vivek Mariappan, Michael R. Blanton, Beth Reid, Donald P. Schneider, Hee Jong Seo, Aurelio Carnero Rosell, Francisco Prada

Research output: Contribution to journalArticle

27 Citations (Scopus)

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. 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 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. 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 languageEnglish (US)
Article number34
JournalAstrophysical Journal, Supplement Series
Volume224
Issue number2
DOIs
StatePublished - Jun 2016

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baryons
oscillation
galaxies
oscillations
Wide-field Infrared Survey Explorer
large-scale structure of the universe
signal-to-noise ratio
homogeneity
contamination
signal to noise ratios
color
requirements
test

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Prakash, A., Licquia, T. C., Newman, J. A., Ross, A. J., Myers, A. D., Dawson, K. S., ... Prada, F. (2016). THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY: LUMINOUS RED GALAXY TARGET SELECTION. Astrophysical Journal, Supplement Series, 224(2), [34]. https://doi.org/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. In: Astrophysical Journal, Supplement Series. 2016 ; Vol. 224, No. 2.
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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. 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 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. 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.",
author = "Abhishek Prakash 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 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 Zhu, {Guangtun Ben} and Brownstein, {Joel R.} and Stephen Bailey and Bolton, {Adam S.} and Timoth{\'e}e Delubac and Vivek Mariappan and Blanton, {Michael R.} and Beth Reid and Schneider, {Donald P.} and Seo, {Hee Jong} and Rosell, {Aurelio Carnero} and Francisco Prada",
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Prakash, A, Licquia, TC, Newman, JA, Ross, AJ, Myers, AD, Dawson, KS, Kneib, JP, Percival, WJ, Bautista, JE, Comparat, J, Tinker, JL, Schlegel, DJ, Tojeiro, R, Ho, S, Lang, D, Rao, SM, McBride, CK, Zhu, GB, Brownstein, JR, Bailey, S, Bolton, AS, Delubac, T, Mariappan, V, Blanton, MR, Reid, B, Schneider, DP, Seo, HJ, Rosell, AC & Prada, F 2016, 'THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY: LUMINOUS RED GALAXY TARGET SELECTION', Astrophysical Journal, Supplement Series, vol. 224, no. 2, 34. https://doi.org/10.3847/0067-0049/224/2/34

THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY : LUMINOUS RED GALAXY TARGET SELECTION. / 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.

In: Astrophysical Journal, Supplement Series, Vol. 224, No. 2, 34, 06.2016.

Research output: Contribution to journalArticle

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 - Zhu, Guangtun Ben

AU - Brownstein, Joel R.

AU - Bailey, Stephen

AU - Bolton, Adam S.

AU - Delubac, Timothée

AU - Mariappan, Vivek

AU - Blanton, Michael R.

AU - Reid, Beth

AU - Schneider, Donald P.

AU - Seo, Hee Jong

AU - Rosell, Aurelio Carnero

AU - Prada, Francisco

PY - 2016/6

Y1 - 2016/6

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. 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 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. 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. 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 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. 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.

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