Target Selection and Validation of DESI Luminous Red Galaxies

The Dark Energy Spectroscopic Instrument (DESI) is carrying out a five-year survey that aims to measure the redshifts of tens of millions of galaxies and quasars, including 8 million luminous red galaxies (LRGs) in the redshift range 0.4 < z ≲ 1.0. Here we present the selection of the DESI LRG sa...
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Autor*in:	Rongpu Zhou [verfasserIn] Biprateep Dey [verfasserIn] Jeffrey A. Newman [verfasserIn] Daniel J. Eisenstein [verfasserIn] K. Dawson [verfasserIn] S. Bailey [verfasserIn] A. Berti [verfasserIn] J. Guy [verfasserIn] Ting-Wen Lan [verfasserIn] H. Zou [verfasserIn] J. Aguilar [verfasserIn] S. Ahlen [verfasserIn] Shadab Alam [verfasserIn] D. Brooks [verfasserIn] A. de la Macorra [verfasserIn] A. Dey [verfasserIn] G. Dhungana [verfasserIn] K. Fanning [verfasserIn] A. Font-Ribera [verfasserIn] S. Gontcho A. Gontcho [verfasserIn] K. Honscheid [verfasserIn] Mustapha Ishak [verfasserIn] T. Kisner [verfasserIn] A. Kovács [verfasserIn] A. Kremin [verfasserIn] M. Landriau [verfasserIn] Michael E. Levi [verfasserIn] C. Magneville [verfasserIn] Marc Manera [verfasserIn] P. Martini [verfasserIn] Aaron M. Meisner [verfasserIn] R. Miquel [verfasserIn] J. Moustakas [verfasserIn] Adam D. Myers [verfasserIn] Jundan Nie [verfasserIn] N. Palanque-Delabrouille [verfasserIn] W. J. Percival [verfasserIn] C. Poppett [verfasserIn] F. Prada [verfasserIn] A. Raichoor [verfasserIn] A. J. Ross [verfasserIn] E. Schlafly [verfasserIn] D. Schlegel [verfasserIn] M. Schubnell [verfasserIn] Gregory Tarlé [verfasserIn] B. A. Weaver [verfasserIn] R. H. Wechsler [verfasserIn] Christophe Yéche [verfasserIn] Zhimin Zhou [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2023

Schlagwörter:	Cosmology Redshift surveys

Übergeordnetes Werk:	In: The Astronomical Journal - IOP Publishing, 2022, 165(2023), 2, p 58
Übergeordnetes Werk:	volume:165 ; year:2023 ; number:2, p 58

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3847/1538-3881/aca5fb

Katalog-ID:	DOAJ089161955

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allfields	10.3847/1538-3881/aca5fb doi (DE-627)DOAJ089161955 (DE-599)DOAJ4e1c04d778b84df8a5508b74d03f3899 DE-627 ger DE-627 rakwb eng QB1-991 Rongpu Zhou verfasserin aut Target Selection and Validation of DESI Luminous Red Galaxies 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Dark Energy Spectroscopic Instrument (DESI) is carrying out a five-year survey that aims to measure the redshifts of tens of millions of galaxies and quasars, including 8 million luminous red galaxies (LRGs) in the redshift range 0.4 < z ≲ 1.0. Here we present the selection of the DESI LRG sample and assess its spectroscopic performance using data from Survey Validation (SV) and the first two months of the Main Survey. The DESI LRG sample, selected using g , r , z , and W 1 photometry from the DESI Legacy Imaging Surveys, is highly robust against imaging systematics. The sample has a target density of 605 deg ^−2 and a comoving number density of 5 × 10 ^−4 h ^3 Mpc ^−3 in 0.4 < z < 0.8; this is a significantly higher density than previous LRG surveys (such as SDSS, BOSS, and eBOSS) while also extending to z ∼ 1. After applying a bright star veto mask developed for the sample, 98.9% of the observed LRG targets yield confident redshifts (with a catastrophic failure rate of 0.2% in the confident redshifts), and only 0.5% of the LRG targets are stellar contamination. The LRG redshift efficiency varies with source brightness and effective exposure time, and we present a simple model that accurately characterizes this dependence. In the appendices, we describe the extended LRG samples observed during SV. Cosmology Redshift surveys Astronomy Biprateep Dey verfasserin aut Jeffrey A. Newman verfasserin aut Daniel J. Eisenstein verfasserin aut K. Dawson verfasserin aut S. Bailey verfasserin aut A. Berti verfasserin aut J. Guy verfasserin aut Ting-Wen Lan verfasserin aut H. Zou verfasserin aut J. Aguilar verfasserin aut S. Ahlen verfasserin aut Shadab Alam verfasserin aut D. Brooks verfasserin aut A. de la Macorra verfasserin aut A. Dey verfasserin aut G. Dhungana verfasserin aut K. Fanning verfasserin aut A. Font-Ribera verfasserin aut S. Gontcho A. Gontcho verfasserin aut K. Honscheid verfasserin aut Mustapha Ishak verfasserin aut T. Kisner verfasserin aut A. Kovács verfasserin aut A. Kremin verfasserin aut M. Landriau verfasserin aut Michael E. Levi verfasserin aut C. Magneville verfasserin aut Marc Manera verfasserin aut P. Martini verfasserin aut Aaron M. Meisner verfasserin aut R. Miquel verfasserin aut J. Moustakas verfasserin aut Adam D. Myers verfasserin aut Jundan Nie verfasserin aut N. Palanque-Delabrouille verfasserin aut W. J. Percival verfasserin aut C. Poppett verfasserin aut F. Prada verfasserin aut A. Raichoor verfasserin aut A. J. Ross verfasserin aut E. Schlafly verfasserin aut D. Schlegel verfasserin aut M. Schubnell verfasserin aut Gregory Tarlé verfasserin aut B. A. Weaver verfasserin aut R. H. Wechsler verfasserin aut Christophe Yéche verfasserin aut Zhimin Zhou verfasserin aut In The Astronomical Journal IOP Publishing, 2022 165(2023), 2, p 58 (DE-627)312175647 (DE-600)2003104-X 15383881 nnns volume:165 year:2023 number:2, p 58 https://doi.org/10.3847/1538-3881/aca5fb kostenfrei https://doaj.org/article/4e1c04d778b84df8a5508b74d03f3899 kostenfrei https://doi.org/10.3847/1538-3881/aca5fb kostenfrei https://doaj.org/toc/1538-3881 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 165 2023 2, p 58
spelling	10.3847/1538-3881/aca5fb doi (DE-627)DOAJ089161955 (DE-599)DOAJ4e1c04d778b84df8a5508b74d03f3899 DE-627 ger DE-627 rakwb eng QB1-991 Rongpu Zhou verfasserin aut Target Selection and Validation of DESI Luminous Red Galaxies 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Dark Energy Spectroscopic Instrument (DESI) is carrying out a five-year survey that aims to measure the redshifts of tens of millions of galaxies and quasars, including 8 million luminous red galaxies (LRGs) in the redshift range 0.4 < z ≲ 1.0. Here we present the selection of the DESI LRG sample and assess its spectroscopic performance using data from Survey Validation (SV) and the first two months of the Main Survey. The DESI LRG sample, selected using g , r , z , and W 1 photometry from the DESI Legacy Imaging Surveys, is highly robust against imaging systematics. The sample has a target density of 605 deg ^−2 and a comoving number density of 5 × 10 ^−4 h ^3 Mpc ^−3 in 0.4 < z < 0.8; this is a significantly higher density than previous LRG surveys (such as SDSS, BOSS, and eBOSS) while also extending to z ∼ 1. After applying a bright star veto mask developed for the sample, 98.9% of the observed LRG targets yield confident redshifts (with a catastrophic failure rate of 0.2% in the confident redshifts), and only 0.5% of the LRG targets are stellar contamination. The LRG redshift efficiency varies with source brightness and effective exposure time, and we present a simple model that accurately characterizes this dependence. In the appendices, we describe the extended LRG samples observed during SV. Cosmology Redshift surveys Astronomy Biprateep Dey verfasserin aut Jeffrey A. Newman verfasserin aut Daniel J. Eisenstein verfasserin aut K. Dawson verfasserin aut S. Bailey verfasserin aut A. Berti verfasserin aut J. Guy verfasserin aut Ting-Wen Lan verfasserin aut H. Zou verfasserin aut J. Aguilar verfasserin aut S. Ahlen verfasserin aut Shadab Alam verfasserin aut D. Brooks verfasserin aut A. de la Macorra verfasserin aut A. Dey verfasserin aut G. Dhungana verfasserin aut K. Fanning verfasserin aut A. Font-Ribera verfasserin aut S. Gontcho A. Gontcho verfasserin aut K. Honscheid verfasserin aut Mustapha Ishak verfasserin aut T. Kisner verfasserin aut A. Kovács verfasserin aut A. Kremin verfasserin aut M. Landriau verfasserin aut Michael E. Levi verfasserin aut C. Magneville verfasserin aut Marc Manera verfasserin aut P. Martini verfasserin aut Aaron M. Meisner verfasserin aut R. Miquel verfasserin aut J. Moustakas verfasserin aut Adam D. Myers verfasserin aut Jundan Nie verfasserin aut N. Palanque-Delabrouille verfasserin aut W. J. Percival verfasserin aut C. Poppett verfasserin aut F. Prada verfasserin aut A. Raichoor verfasserin aut A. J. Ross verfasserin aut E. Schlafly verfasserin aut D. Schlegel verfasserin aut M. Schubnell verfasserin aut Gregory Tarlé verfasserin aut B. A. Weaver verfasserin aut R. H. Wechsler verfasserin aut Christophe Yéche verfasserin aut Zhimin Zhou verfasserin aut In The Astronomical Journal IOP Publishing, 2022 165(2023), 2, p 58 (DE-627)312175647 (DE-600)2003104-X 15383881 nnns volume:165 year:2023 number:2, p 58 https://doi.org/10.3847/1538-3881/aca5fb kostenfrei https://doaj.org/article/4e1c04d778b84df8a5508b74d03f3899 kostenfrei https://doi.org/10.3847/1538-3881/aca5fb kostenfrei https://doaj.org/toc/1538-3881 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 165 2023 2, p 58
allfields_unstemmed	10.3847/1538-3881/aca5fb doi (DE-627)DOAJ089161955 (DE-599)DOAJ4e1c04d778b84df8a5508b74d03f3899 DE-627 ger DE-627 rakwb eng QB1-991 Rongpu Zhou verfasserin aut Target Selection and Validation of DESI Luminous Red Galaxies 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Dark Energy Spectroscopic Instrument (DESI) is carrying out a five-year survey that aims to measure the redshifts of tens of millions of galaxies and quasars, including 8 million luminous red galaxies (LRGs) in the redshift range 0.4 < z ≲ 1.0. Here we present the selection of the DESI LRG sample and assess its spectroscopic performance using data from Survey Validation (SV) and the first two months of the Main Survey. The DESI LRG sample, selected using g , r , z , and W 1 photometry from the DESI Legacy Imaging Surveys, is highly robust against imaging systematics. The sample has a target density of 605 deg ^−2 and a comoving number density of 5 × 10 ^−4 h ^3 Mpc ^−3 in 0.4 < z < 0.8; this is a significantly higher density than previous LRG surveys (such as SDSS, BOSS, and eBOSS) while also extending to z ∼ 1. After applying a bright star veto mask developed for the sample, 98.9% of the observed LRG targets yield confident redshifts (with a catastrophic failure rate of 0.2% in the confident redshifts), and only 0.5% of the LRG targets are stellar contamination. The LRG redshift efficiency varies with source brightness and effective exposure time, and we present a simple model that accurately characterizes this dependence. In the appendices, we describe the extended LRG samples observed during SV. Cosmology Redshift surveys Astronomy Biprateep Dey verfasserin aut Jeffrey A. Newman verfasserin aut Daniel J. Eisenstein verfasserin aut K. Dawson verfasserin aut S. Bailey verfasserin aut A. Berti verfasserin aut J. Guy verfasserin aut Ting-Wen Lan verfasserin aut H. Zou verfasserin aut J. Aguilar verfasserin aut S. Ahlen verfasserin aut Shadab Alam verfasserin aut D. Brooks verfasserin aut A. de la Macorra verfasserin aut A. Dey verfasserin aut G. Dhungana verfasserin aut K. Fanning verfasserin aut A. Font-Ribera verfasserin aut S. Gontcho A. Gontcho verfasserin aut K. Honscheid verfasserin aut Mustapha Ishak verfasserin aut T. Kisner verfasserin aut A. Kovács verfasserin aut A. Kremin verfasserin aut M. Landriau verfasserin aut Michael E. Levi verfasserin aut C. Magneville verfasserin aut Marc Manera verfasserin aut P. Martini verfasserin aut Aaron M. Meisner verfasserin aut R. Miquel verfasserin aut J. Moustakas verfasserin aut Adam D. Myers verfasserin aut Jundan Nie verfasserin aut N. Palanque-Delabrouille verfasserin aut W. J. Percival verfasserin aut C. Poppett verfasserin aut F. Prada verfasserin aut A. Raichoor verfasserin aut A. J. Ross verfasserin aut E. Schlafly verfasserin aut D. Schlegel verfasserin aut M. Schubnell verfasserin aut Gregory Tarlé verfasserin aut B. A. Weaver verfasserin aut R. H. Wechsler verfasserin aut Christophe Yéche verfasserin aut Zhimin Zhou verfasserin aut In The Astronomical Journal IOP Publishing, 2022 165(2023), 2, p 58 (DE-627)312175647 (DE-600)2003104-X 15383881 nnns volume:165 year:2023 number:2, p 58 https://doi.org/10.3847/1538-3881/aca5fb kostenfrei https://doaj.org/article/4e1c04d778b84df8a5508b74d03f3899 kostenfrei https://doi.org/10.3847/1538-3881/aca5fb kostenfrei https://doaj.org/toc/1538-3881 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 165 2023 2, p 58
allfieldsGer	10.3847/1538-3881/aca5fb doi (DE-627)DOAJ089161955 (DE-599)DOAJ4e1c04d778b84df8a5508b74d03f3899 DE-627 ger DE-627 rakwb eng QB1-991 Rongpu Zhou verfasserin aut Target Selection and Validation of DESI Luminous Red Galaxies 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Dark Energy Spectroscopic Instrument (DESI) is carrying out a five-year survey that aims to measure the redshifts of tens of millions of galaxies and quasars, including 8 million luminous red galaxies (LRGs) in the redshift range 0.4 < z ≲ 1.0. Here we present the selection of the DESI LRG sample and assess its spectroscopic performance using data from Survey Validation (SV) and the first two months of the Main Survey. The DESI LRG sample, selected using g , r , z , and W 1 photometry from the DESI Legacy Imaging Surveys, is highly robust against imaging systematics. The sample has a target density of 605 deg ^−2 and a comoving number density of 5 × 10 ^−4 h ^3 Mpc ^−3 in 0.4 < z < 0.8; this is a significantly higher density than previous LRG surveys (such as SDSS, BOSS, and eBOSS) while also extending to z ∼ 1. After applying a bright star veto mask developed for the sample, 98.9% of the observed LRG targets yield confident redshifts (with a catastrophic failure rate of 0.2% in the confident redshifts), and only 0.5% of the LRG targets are stellar contamination. The LRG redshift efficiency varies with source brightness and effective exposure time, and we present a simple model that accurately characterizes this dependence. In the appendices, we describe the extended LRG samples observed during SV. Cosmology Redshift surveys Astronomy Biprateep Dey verfasserin aut Jeffrey A. Newman verfasserin aut Daniel J. Eisenstein verfasserin aut K. Dawson verfasserin aut S. Bailey verfasserin aut A. Berti verfasserin aut J. Guy verfasserin aut Ting-Wen Lan verfasserin aut H. Zou verfasserin aut J. Aguilar verfasserin aut S. Ahlen verfasserin aut Shadab Alam verfasserin aut D. Brooks verfasserin aut A. de la Macorra verfasserin aut A. Dey verfasserin aut G. Dhungana verfasserin aut K. Fanning verfasserin aut A. Font-Ribera verfasserin aut S. Gontcho A. Gontcho verfasserin aut K. Honscheid verfasserin aut Mustapha Ishak verfasserin aut T. Kisner verfasserin aut A. Kovács verfasserin aut A. Kremin verfasserin aut M. Landriau verfasserin aut Michael E. Levi verfasserin aut C. Magneville verfasserin aut Marc Manera verfasserin aut P. Martini verfasserin aut Aaron M. Meisner verfasserin aut R. Miquel verfasserin aut J. Moustakas verfasserin aut Adam D. Myers verfasserin aut Jundan Nie verfasserin aut N. Palanque-Delabrouille verfasserin aut W. J. Percival verfasserin aut C. Poppett verfasserin aut F. Prada verfasserin aut A. Raichoor verfasserin aut A. J. Ross verfasserin aut E. Schlafly verfasserin aut D. Schlegel verfasserin aut M. Schubnell verfasserin aut Gregory Tarlé verfasserin aut B. A. Weaver verfasserin aut R. H. Wechsler verfasserin aut Christophe Yéche verfasserin aut Zhimin Zhou verfasserin aut In The Astronomical Journal IOP Publishing, 2022 165(2023), 2, p 58 (DE-627)312175647 (DE-600)2003104-X 15383881 nnns volume:165 year:2023 number:2, p 58 https://doi.org/10.3847/1538-3881/aca5fb kostenfrei https://doaj.org/article/4e1c04d778b84df8a5508b74d03f3899 kostenfrei https://doi.org/10.3847/1538-3881/aca5fb kostenfrei https://doaj.org/toc/1538-3881 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 165 2023 2, p 58
allfieldsSound	10.3847/1538-3881/aca5fb doi (DE-627)DOAJ089161955 (DE-599)DOAJ4e1c04d778b84df8a5508b74d03f3899 DE-627 ger DE-627 rakwb eng QB1-991 Rongpu Zhou verfasserin aut Target Selection and Validation of DESI Luminous Red Galaxies 2023 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The Dark Energy Spectroscopic Instrument (DESI) is carrying out a five-year survey that aims to measure the redshifts of tens of millions of galaxies and quasars, including 8 million luminous red galaxies (LRGs) in the redshift range 0.4 < z ≲ 1.0. Here we present the selection of the DESI LRG sample and assess its spectroscopic performance using data from Survey Validation (SV) and the first two months of the Main Survey. The DESI LRG sample, selected using g , r , z , and W 1 photometry from the DESI Legacy Imaging Surveys, is highly robust against imaging systematics. The sample has a target density of 605 deg ^−2 and a comoving number density of 5 × 10 ^−4 h ^3 Mpc ^−3 in 0.4 < z < 0.8; this is a significantly higher density than previous LRG surveys (such as SDSS, BOSS, and eBOSS) while also extending to z ∼ 1. After applying a bright star veto mask developed for the sample, 98.9% of the observed LRG targets yield confident redshifts (with a catastrophic failure rate of 0.2% in the confident redshifts), and only 0.5% of the LRG targets are stellar contamination. The LRG redshift efficiency varies with source brightness and effective exposure time, and we present a simple model that accurately characterizes this dependence. In the appendices, we describe the extended LRG samples observed during SV. Cosmology Redshift surveys Astronomy Biprateep Dey verfasserin aut Jeffrey A. Newman verfasserin aut Daniel J. Eisenstein verfasserin aut K. Dawson verfasserin aut S. Bailey verfasserin aut A. Berti verfasserin aut J. Guy verfasserin aut Ting-Wen Lan verfasserin aut H. Zou verfasserin aut J. Aguilar verfasserin aut S. Ahlen verfasserin aut Shadab Alam verfasserin aut D. Brooks verfasserin aut A. de la Macorra verfasserin aut A. Dey verfasserin aut G. Dhungana verfasserin aut K. Fanning verfasserin aut A. Font-Ribera verfasserin aut S. Gontcho A. Gontcho verfasserin aut K. Honscheid verfasserin aut Mustapha Ishak verfasserin aut T. Kisner verfasserin aut A. Kovács verfasserin aut A. Kremin verfasserin aut M. Landriau verfasserin aut Michael E. Levi verfasserin aut C. Magneville verfasserin aut Marc Manera verfasserin aut P. Martini verfasserin aut Aaron M. Meisner verfasserin aut R. Miquel verfasserin aut J. Moustakas verfasserin aut Adam D. Myers verfasserin aut Jundan Nie verfasserin aut N. Palanque-Delabrouille verfasserin aut W. J. Percival verfasserin aut C. Poppett verfasserin aut F. Prada verfasserin aut A. Raichoor verfasserin aut A. J. Ross verfasserin aut E. Schlafly verfasserin aut D. Schlegel verfasserin aut M. Schubnell verfasserin aut Gregory Tarlé verfasserin aut B. A. Weaver verfasserin aut R. H. Wechsler verfasserin aut Christophe Yéche verfasserin aut Zhimin Zhou verfasserin aut In The Astronomical Journal IOP Publishing, 2022 165(2023), 2, p 58 (DE-627)312175647 (DE-600)2003104-X 15383881 nnns volume:165 year:2023 number:2, p 58 https://doi.org/10.3847/1538-3881/aca5fb kostenfrei https://doaj.org/article/4e1c04d778b84df8a5508b74d03f3899 kostenfrei https://doi.org/10.3847/1538-3881/aca5fb kostenfrei https://doaj.org/toc/1538-3881 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2006 GBV_ILN_2014 GBV_ILN_2088 GBV_ILN_2110 GBV_ILN_2129 GBV_ILN_2522 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 165 2023 2, p 58
language	English
source	In The Astronomical Journal 165(2023), 2, p 58 volume:165 year:2023 number:2, p 58
sourceStr	In The Astronomical Journal 165(2023), 2, p 58 volume:165 year:2023 number:2, p 58
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Cosmology Redshift surveys Astronomy
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container_title	The Astronomical Journal
authorswithroles_txt_mv	Rongpu Zhou @@aut@@ Biprateep Dey @@aut@@ Jeffrey A. Newman @@aut@@ Daniel J. Eisenstein @@aut@@ K. Dawson @@aut@@ S. Bailey @@aut@@ A. Berti @@aut@@ J. Guy @@aut@@ Ting-Wen Lan @@aut@@ H. Zou @@aut@@ J. Aguilar @@aut@@ S. Ahlen @@aut@@ Shadab Alam @@aut@@ D. Brooks @@aut@@ A. de la Macorra @@aut@@ A. Dey @@aut@@ G. Dhungana @@aut@@ K. Fanning @@aut@@ A. Font-Ribera @@aut@@ S. Gontcho A. Gontcho @@aut@@ K. Honscheid @@aut@@ Mustapha Ishak @@aut@@ T. Kisner @@aut@@ A. Kovács @@aut@@ A. Kremin @@aut@@ M. Landriau @@aut@@ Michael E. Levi @@aut@@ C. Magneville @@aut@@ Marc Manera @@aut@@ P. Martini @@aut@@ Aaron M. Meisner @@aut@@ R. Miquel @@aut@@ J. Moustakas @@aut@@ Adam D. Myers @@aut@@ Jundan Nie @@aut@@ N. Palanque-Delabrouille @@aut@@ W. J. Percival @@aut@@ C. Poppett @@aut@@ F. Prada @@aut@@ A. Raichoor @@aut@@ A. J. Ross @@aut@@ E. Schlafly @@aut@@ D. Schlegel @@aut@@ M. Schubnell @@aut@@ Gregory Tarlé @@aut@@ B. A. Weaver @@aut@@ R. H. Wechsler @@aut@@ Christophe Yéche @@aut@@ Zhimin Zhou @@aut@@
publishDateDaySort_date	2023-01-01T00:00:00Z
hierarchy_top_id	312175647
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author	Rongpu Zhou
spellingShingle	Rongpu Zhou misc QB1-991 misc Cosmology misc Redshift surveys misc Astronomy Target Selection and Validation of DESI Luminous Red Galaxies
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topic_title	QB1-991 Target Selection and Validation of DESI Luminous Red Galaxies Cosmology Redshift surveys
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title	Target Selection and Validation of DESI Luminous Red Galaxies
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title_full	Target Selection and Validation of DESI Luminous Red Galaxies
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author_browse	Rongpu Zhou Biprateep Dey Jeffrey A. Newman Daniel J. Eisenstein K. Dawson S. Bailey A. Berti J. Guy Ting-Wen Lan H. Zou J. Aguilar S. Ahlen Shadab Alam D. Brooks A. de la Macorra A. Dey G. Dhungana K. Fanning A. Font-Ribera S. Gontcho A. Gontcho K. Honscheid Mustapha Ishak T. Kisner A. Kovács A. Kremin M. Landriau Michael E. Levi C. Magneville Marc Manera P. Martini Aaron M. Meisner R. Miquel J. Moustakas Adam D. Myers Jundan Nie N. Palanque-Delabrouille W. J. Percival C. Poppett F. Prada A. Raichoor A. J. Ross E. Schlafly D. Schlegel M. Schubnell Gregory Tarlé B. A. Weaver R. H. Wechsler Christophe Yéche Zhimin Zhou
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title_sort	target selection and validation of desi luminous red galaxies
callnumber	QB1-991
title_auth	Target Selection and Validation of DESI Luminous Red Galaxies
abstract	The Dark Energy Spectroscopic Instrument (DESI) is carrying out a five-year survey that aims to measure the redshifts of tens of millions of galaxies and quasars, including 8 million luminous red galaxies (LRGs) in the redshift range 0.4 < z ≲ 1.0. Here we present the selection of the DESI LRG sample and assess its spectroscopic performance using data from Survey Validation (SV) and the first two months of the Main Survey. The DESI LRG sample, selected using g , r , z , and W 1 photometry from the DESI Legacy Imaging Surveys, is highly robust against imaging systematics. The sample has a target density of 605 deg ^−2 and a comoving number density of 5 × 10 ^−4 h ^3 Mpc ^−3 in 0.4 < z < 0.8; this is a significantly higher density than previous LRG surveys (such as SDSS, BOSS, and eBOSS) while also extending to z ∼ 1. After applying a bright star veto mask developed for the sample, 98.9% of the observed LRG targets yield confident redshifts (with a catastrophic failure rate of 0.2% in the confident redshifts), and only 0.5% of the LRG targets are stellar contamination. The LRG redshift efficiency varies with source brightness and effective exposure time, and we present a simple model that accurately characterizes this dependence. In the appendices, we describe the extended LRG samples observed during SV.
abstractGer	The Dark Energy Spectroscopic Instrument (DESI) is carrying out a five-year survey that aims to measure the redshifts of tens of millions of galaxies and quasars, including 8 million luminous red galaxies (LRGs) in the redshift range 0.4 < z ≲ 1.0. Here we present the selection of the DESI LRG sample and assess its spectroscopic performance using data from Survey Validation (SV) and the first two months of the Main Survey. The DESI LRG sample, selected using g , r , z , and W 1 photometry from the DESI Legacy Imaging Surveys, is highly robust against imaging systematics. The sample has a target density of 605 deg ^−2 and a comoving number density of 5 × 10 ^−4 h ^3 Mpc ^−3 in 0.4 < z < 0.8; this is a significantly higher density than previous LRG surveys (such as SDSS, BOSS, and eBOSS) while also extending to z ∼ 1. After applying a bright star veto mask developed for the sample, 98.9% of the observed LRG targets yield confident redshifts (with a catastrophic failure rate of 0.2% in the confident redshifts), and only 0.5% of the LRG targets are stellar contamination. The LRG redshift efficiency varies with source brightness and effective exposure time, and we present a simple model that accurately characterizes this dependence. In the appendices, we describe the extended LRG samples observed during SV.
abstract_unstemmed	The Dark Energy Spectroscopic Instrument (DESI) is carrying out a five-year survey that aims to measure the redshifts of tens of millions of galaxies and quasars, including 8 million luminous red galaxies (LRGs) in the redshift range 0.4 < z ≲ 1.0. Here we present the selection of the DESI LRG sample and assess its spectroscopic performance using data from Survey Validation (SV) and the first two months of the Main Survey. The DESI LRG sample, selected using g , r , z , and W 1 photometry from the DESI Legacy Imaging Surveys, is highly robust against imaging systematics. The sample has a target density of 605 deg ^−2 and a comoving number density of 5 × 10 ^−4 h ^3 Mpc ^−3 in 0.4 < z < 0.8; this is a significantly higher density than previous LRG surveys (such as SDSS, BOSS, and eBOSS) while also extending to z ∼ 1. After applying a bright star veto mask developed for the sample, 98.9% of the observed LRG targets yield confident redshifts (with a catastrophic failure rate of 0.2% in the confident redshifts), and only 0.5% of the LRG targets are stellar contamination. The LRG redshift efficiency varies with source brightness and effective exposure time, and we present a simple model that accurately characterizes this dependence. In the appendices, we describe the extended LRG samples observed during SV.
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container_issue	2, p 58
title_short	Target Selection and Validation of DESI Luminous Red Galaxies
url	https://doi.org/10.3847/1538-3881/aca5fb https://doaj.org/article/4e1c04d778b84df8a5508b74d03f3899 https://doaj.org/toc/1538-3881
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author2	Biprateep Dey Jeffrey A. Newman Daniel J. Eisenstein K. Dawson S. Bailey A. Berti J. Guy Ting-Wen Lan H. Zou J. Aguilar S. Ahlen Shadab Alam D. Brooks A. de la Macorra A. Dey G. Dhungana K. Fanning A. Font-Ribera S. Gontcho A. Gontcho K. Honscheid Mustapha Ishak T. Kisner A. Kovács A. Kremin M. Landriau Michael E. Levi C. Magneville Marc Manera P. Martini Aaron M. Meisner R. Miquel J. Moustakas Adam D. Myers Jundan Nie N. Palanque-Delabrouille W. J. Percival C. Poppett F. Prada A. Raichoor A. J. Ross E. Schlafly D. Schlegel M. Schubnell Gregory Tarlé B. A. Weaver R. H. Wechsler Christophe Yéche Zhimin Zhou
author2Str	Biprateep Dey Jeffrey A. Newman Daniel J. Eisenstein K. Dawson S. Bailey A. Berti J. Guy Ting-Wen Lan H. Zou J. Aguilar S. Ahlen Shadab Alam D. Brooks A. de la Macorra A. Dey G. Dhungana K. Fanning A. Font-Ribera S. Gontcho A. Gontcho K. Honscheid Mustapha Ishak T. Kisner A. Kovács A. Kremin M. Landriau Michael E. Levi C. Magneville Marc Manera P. Martini Aaron M. Meisner R. Miquel J. Moustakas Adam D. Myers Jundan Nie N. Palanque-Delabrouille W. J. Percival C. Poppett F. Prada A. Raichoor A. J. Ross E. Schlafly D. Schlegel M. Schubnell Gregory Tarlé B. A. Weaver R. H. Wechsler Christophe Yéche Zhimin Zhou
ppnlink	312175647
callnumber-subject	QB - Astronomy
mediatype_str_mv	c
isOA_txt	true
hochschulschrift_bool	false
doi_str	10.3847/1538-3881/aca5fb
callnumber-a	QB1-991
up_date	2024-07-03T21:37:07.499Z
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score	7.401726

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Target Selection and Validation of DESI Luminous Red Galaxies

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