The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies

被引：48

作者：

Lan, Ting-Wen ^{[1
,2
]}

Tojeiro, R. ^{[3
]}

Armengaud, E. ^{[4
]}

Prochaska, J. Xavier ^{[2
,5
]}

Davis, T. M. ^{[6
]}

Alexander, David M. ^{[7
]}

Raichoor, A. ^{[8
]}

Zhou, Rongpu ^{[8
]}

Yeche, Christophe ^{[4
]}

Balland, C. ^{[9
]}

BenZvi, S. ^{[10
]}

Berti, A. ^{[11
]}

Canning, R. ^{[12
]}

Carr, A. ^{[6
]}

Chittenden, H. ^{[3
]}

Cole, S. ^{[13
]}

Cousinou, M. -C. ^{[14
]}

Dawson, K. ^{[11
]}

Dey, Biprateep ^{[15
]}

Douglass, K. ^{[10
]}

Edge, A. ^{[13
]}

Escoffier, S. ^{[14
]}

Glanville, A. ^{[6
]}

Gontcho, S. Gontcho ^{[8
]}

Guy, J. ^{[8
]}

Hahn, C. ^{[16
,17
]}

Howlett, C. ^{[6
]}

Hwang, Ho Seong ^{[18
,19
,20
]}

Jiang, L. ^{[21
]}

Kovacs, A. ^{[22
,23
]}

Mezcua, M. ^{[24
,25
]}

Moore, S. ^{[13
]}

Nadathur, S. ^{[12
,26
]}

Oh, M. ^{[27
]}

Parkinson, D. ^{[28
]}

Rocher, A. ^{[4
]}

Ross, A. J. ^{[29
]}

Ruhlmann-Kleider, V. ^{[4
]}

Sabiu, C. G. ^{[30
]}

Said, K. ^{[6
]}

Saulder, C. ^{[28
]}

Sierra-Porta, D. ^{[31
,32
]}

Weiner, B. ^{[33
]}

Yu, J. ^{[34
]}

Zarrouk, P. ^{[9
]}

Zhang, Y. ^{[35
]}

Zou, H. ^{[36
]}

Ahlen, S. ^{[37
]}

Bailey, S. ^{[8
]}

Brooks, D. ^{[26
]}

机构：

[1] Natl Taiwan Univ, Grad Inst Astrophys, Dept Phys, 1, Sec 4 Roosevelt R, Taipei 10617, Taiwan

[2] Univ Calif Santa Cruz, Dept Astron & Astrophys, 1156 High St, Santa Cruz, CA 95065 USA

[3] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland

[4] Univ Paris Saclay, IRFU, CEA, F-91191 Gif Sur Yvette, France

[5] Univ Tokyo, Univ Tokyo Inst Adv Study UTIAS, Kavli Inst Phys & Math Universe Kavli IPMU, WPI, Kashiwa, Chiba 2778583, Japan

[6] Univ Queensland, Sch Math & Phys, Brisbane, Qld 4072, Australia

[7] Univ Durham, Ctr Extragalact Astron, Dept Phys, South Rd, Durham DH1 3LE, England

[8] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA

[9] Sorbonne Univ, Lab Phys Nucleaire & Hautes Energies LPNHE, CNRS IN2P3, FR-75005 Paris, France

[10] Univ Rochester, Dept Phys & Astron, POB 270171,206 Bausch & Lomb Hall, Rochester, NY 14627 USA

[11] Univ Utah, Dept Phys & Astron, 115 South 1400 East, Salt Lake City, UT 84112 USA

[12] Univ Portsmouth, Inst Cosmol & Gravitat, Dennis Sciama Bldg, Portsmouth PO1 3FX, Hants, England

[13] Univ Durham, Inst Computat Cosmol, Dept Phys, South Rd, Durham DH1 3LE, England

[14] Aix Marseille Univ, CNRS IN2P3, CPPM, Marseille, France

[15] Univ Pittsburgh, Astrophys & Cosmol Ctr PITT PACC, Dept Phys & Astron & Pittsburgh Particle Phys, 3941 OHara St, Pittsburgh, PA 15260 USA

[16] Princeton Univ, Dept Astrophys Sci, Peyton Hall, Princeton, NJ 08544 USA

[17] Lawrence Berkeley Natl Lab, One Cyclotron Rd, Berkeley, CA 94720 USA

[18] Seoul Natl Univ, Dept Phys & Astron, Astron Program, 1 Gwanak ro, Seoul 08826, South Korea

[19] Seoul Natl Univ, SNU Astron Res Ctr, 1 Gwanak ro, Seoul 08826, South Korea

[20] Korea Astron & Space Sci Inst KASI, 776 Daedeokdae ro, Daejeon 34055, South Korea

[21] Peking Univ, Kavli Inst Astron & Astrophys, PKU, 5 Yiheyuan Rd, Beijing 100871, Peoples R China

[22] Univ La Laguna ULL, Dept Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain

[23] Inst Astrofis Canarias, C-Via Lactea S-N, E-38205 Santa Cruz De Tenerife, Spain

[24] Inst Estudis Espacials Catalunya IEEC, Barcelona 08034, Spain

[25] ICE CSIC, Inst Space Sci, Campus UAB Carrer Can Magrans S-N, E-08913 Barcelona, Spain

[26] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England

[27] Shanghai Jiao Tong Univ, Dept Astron, Shanghai 200240, Peoples R China

[28] Korea Astron & Space Sci Inst, 776, Daedeokdae Ro, Daejeon 34055, South Korea

[29] Ohio State Univ, Ctr Cosmol & AstroParticle Phys, 191 West Woodruff Ave, Columbus, OH 43210 USA

[30] Univ Seoul, Nat Sci Res Inst, 163 Seoulsiripdae, Seoul, South Korea

[31] Univ Tecnol Bolivar, Fac Ciencias Basicas, Cartagena De Indias 130010, Colombia

[32] Univ Los Andes, Dept Fis, Cra 1 18A-10, Edificio Ip, Bogota 111711, Colombia

[33] Univ Arizona, Steward Observ, 933 N Cherry Ave, Tucson, AZ 85721 USA

[34] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

[35] NYU, Ctr Cosmol & Particle Phys, Dept Phys, New York, NY 10003 USA

[36] Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100012, Peoples R China

[37] Boston Univ, Phys Dept, 590 Commonwealth Ave, Boston, MA 02215 USA

[38] Natl Tsing Hua Univ, Inst Astron, Dept Phys, 101 Kuang Fu Rd Sec 2, Hsinchu 30013, Taiwan

[39] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 04510, DF, Mexico

[40] NSFs Natl Opt Infrared Astron Res Lab, 950 N Cherry Ave, Tucson, AZ 85719 USA

[41] Southern Methodist Univ, Dept Phys, 3215 Daniel Ave, Dallas, TX 75275 USA

[42] Univ Space Res Assoc, NASA Ames Res Ctr, Moffett Field, CA USA

[43] Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA

[44] Barcelona Inst Sci & Technol, Inst Fis Altes Energies IFAE, Campus UAB, E-08193 Barcelona, Spain

[45] Flatiron Inst, 162 5th Ave, New York, NY 10010 USA

[46] Univ Michigan, Phys Dept, Ann Arbor, MI 48109 USA

[47] Inst Catalana Recerca & Estudis Avancats, Passeig Lluis Companys 23, Barcelona 08010, Spain

[48] Siena Coll, Dept Phys & Astron, 515 Loudon Rd, Loudonville, NY 12211 USA

[49] Univ Wyoming, E Univ 1000, Dept Phys & Astron, Dept 3905, Laramie, WY 82071 USA

[50] Univ Waterloo, Dept Phys & Astron, 200 Univ Ave, Waterloo, ON N2L 3G1, Canada

来源：

ASTROPHYSICAL JOURNAL | 2023年 / 943卷 / 01期

基金：

美国国家科学基金会;

关键词：

SPECTROSCOPIC TARGET SELECTION; DIGITAL SKY SURVEY;

D O I：

10.3847/1538-4357/aca5fa

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Dark Energy Spectroscopic Instrument (DESI) Survey has obtained a set of spectroscopic measurements of galaxies to validate the final survey design and target selections. To assist in these tasks, we visually inspect DESI spectra of approximately 2500 bright galaxies, 3500 luminous red galaxies (LRGs), and 10,000 emission-line galaxies (ELGs) to obtain robust redshift identifications. We then utilize the visually inspected redshift information to characterize the performance of the DESI operation. Based on the visual inspection (VI) catalogs, our results show that the final survey design yields samples of bright galaxies, LRGs, and ELGs with purity greater than 99%. Moreover, we demonstrate that the precision of the redshift measurements is approximately 10 km s(-1) for bright galaxies and ELGs and approximately 40 km s(-1) for LRGs. The average redshift accuracy is within 10 km s(-1) for the three types of galaxies. The VI process also helps improve the quality of the DESI data by identifying spurious spectral features introduced by the pipeline. Finally, we show examples of unexpected real astronomical objects, such as Ly alpha emitters and strong lensing candidates, identified by VI. These results demonstrate the importance and utility of visually inspecting data from incoming and upcoming surveys, especially during their early operation phases.

引用

页数：18

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