The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies
Ting-Wen LanDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95065, USARita TojeiroSUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, UKE. ArmengaudIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceJ. X. ProchaskaDepartment of Astronomy and Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95065, USAT. M. DavisSchool of Mathematics and Physics, University of Queensland, 4072, AustraliaD. M. AlexanderCentre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham, DH1 3LE, UKAnand RaichoorLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USARongpu ZhouLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAChristophe YècheIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceC. BallandSorbonne Université, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), FR-75005 Paris, FranceS. BenZviDepartment of Physics & Astronomy, University of Rochester, 206 Bausch and Lomb Hall, P.O. Box 270171, Rochester, NY 14627-0171, USAA. BertiDepartment of Physics and Astronomy, University of Utah, 115 South 1400 East, Salt Lake City, UT 84112, USAR. E. A. CanningInstitute of Cosmology & Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth, PO1 3FX, UKAnthony CarrSchool of Mathematics and Physics, University of Queensland, 4072, AustraliaH. ChittendenSUPA, School of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, UKShaun ColeInstitute for Computational Cosmology, Department of Physics, Durham University, South Road, Durham DH1 3LE, UKM.-C. CousinouAix Marseille Université, CNRS/IN2P3, CPPM, Marseille, FranceKyle DawsonDepartment of Physics and Astronomy, University of Utah, 115 South 1400 East, Salt Lake City, UT 84112, USABiprateep DeyDepartment of Physics & Astronomy and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh, 3941 O’Hara Street, Pittsburgh, PA 15260, USAKelly A. DouglassDepartment of Physics & Astronomy, University of Rochester, 206 Bausch and Lomb Hall, P.O. Box 270171, Rochester, NY 14627-0171, USAA. C. EdgeInstitute for Computational Cosmology, Department of Physics, Durham University, South Road, Durham DH1 3LE, UKS. EscoffierAix-Marseille UniversitéA. GlanvilleSchool of Mathematics and Physics, University of Queensland, 4072, AustraliaSatya Gontcho A GontchoLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAJ. GuyLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAChang Hoon HahnDepartment of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton NJ 08544, USACullan HowlettSchool of Mathematics and Physics, University of Queensland, 4072, AustraliaHo Seong HwangAstronomy Program, Department of Physics and Astronomy, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of KoreaLinhua JiangKavli Institute for Astronomy and Astrophysics at Peking University, PKU, 5 Yiheyuan Road, Haidian District, Beijing 100871, People's Republic of ChinaAndrás KovácsDepartamento de Astrofísica, Universidad de La Laguna (ULL), E-38206 La Laguna, Tenerife, SpainMar MezcuaInstitut d’Estudis Espacials de Catalunya (IEEC), 08034 Barcelona, SpainS. MooreInstitute for Computational Cosmology, Department of Physics, Durham University, South Road, Durham DH1 3LE, UKS. NadathurDepartment of Physics & Astronomy, University College London, Gower Street, London, WC1E 6BT, UKMinji OhDepartment of Astronomy, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of ChinaDavid ParkinsonKorea Astronomy and Space Science Institute, 776, Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of KoreaA. RocherIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceA.J. RossCenter for Cosmology and AstroParticle Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, OH 43210, USAV. Ruhlmann-KleiderIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceCristiano G. SabiuNatural Science Research Institute, University of Seoul, 163 Seoulsiripdae-ro, Dongdaemun-gu, Seoul, KoreaKhaled SaidSchool of Mathematics and Physics, University of Queensland, 4072, AustraliaChristoph SaulderKorea Astronomy and Space Science Institute, 776, Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of KoreaD. Sierra-PortaDepartamento de Física, Universidad de los Andes, Cra. 1 No. 18A-10, Edificio Ip, CP 111711, Bogotá, ColombiaBenjamin J. WeinerSteward Observatory, University of Arizona, 933 N. Cherry Avenue, Tucson, AZ 85721, USAJiaxi YuEcole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, SwitzerlandPauline ZarroukSorbonne Université, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), FR-75005 Paris, FranceYucheng ZhangDepartment of Physics and Center for Cosmology and Particle Physics, New York University, New York, NY 10003, USAH. ZouNational Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100012, People's Republic of ChinaS. AhlenPhysics Department, Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USAS. BaileyLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USADavid BrooksDepartment of Physics & Astronomy, University College London, Gower Street, London, WC1E 6BT, UKAndrew P. CooperInstitute of Astronomy and Department of Physics, National Tsing Hua University, 101 Kuang-Fu Rd. Sec. 2, Hsinchu 30013, TaiwanAxel de la MacorraInstituto de Física, Universidad Nacional Autónoma de México, Ciudad de México C.P. 04510, MÉxicoArjun DeyNSF’s National Optical-Infrared Astronomy Research Laboratory, 950 N. Cherry Avenue, Tucson, AZ 85719, USAG. DhunganaDepartment of Physics, Southern Methodist University, 3215 Daniel Avenue, Dallas, TX 75275, USAP. DoelDepartment of Physics & Astronomy, University College London, Gower Street, London, WC1E 6BT, UKSarah EftekharzadehUniversities Space Research Association, NASA Ames Research Center, Moffett Field, CA, USAE. ChaussidonDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAAndreu Font-RiberaInstitut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra Barcelona, SpainLehman H. GarrisonFlatiron Institute, 162 5th Avenue, New York, NY 10010, USAE. GaztañagaInstitut d’Estudis Espacials de Catalunya (IEEC), 08034 Barcelona, SpainR. KehoeDepartment of Physics, Southern Methodist University, 3215 Daniel Avenue, Dallas, TX 75275, USATheodore KisnerLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAAnthony KreminDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAMartin LandriauLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAL. Le GuillouSorbonne Université, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), FR-75005 Paris, FranceM. E. LeviLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAC. MagnevilleIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceAaron MeisnerNSF’s National Optical-Infrared Astronomy Research Laboratory, 950 N. Cherry Avenue, Tucson, AZ 85719, USAR. MiquelInstitució Catalana de Recerca i Estudis Avançats, Passeig de Lluís Companys, 23, 08010 Barcelona, SpainJohn MoustakasDepartment of Physics and Astronomy, Siena College, 515 Loudon Road, Loudonville, NY 12211, USAAdam D. MyersDepartment of Physics & Astronomy, University of Wyoming, 1000 E. University, Department 3905, Laramie, WY 82071, USAJeffrey A. NewmanDepartment of Physics & Astronomy and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh, 3941 O’Hara Street, Pittsburgh, PA 15260, USAJundan NieNational Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100012, People's Republic of ChinaN. Palanque‐DelabrouilleIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceWill J. PercivalDepartment of Physics and Astronomy, University of Waterloo, 200 University Avenue W, Waterloo, ON N2L 3G1, CanadaClaire PoppettLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAFrancisco PradaInstituto de Astrofisica de Andalucía, Glorieta de la Astronomía, s/n, E-18008 Granada, SpainM. SchubnellDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAG. TarléDepartment of Physics, University of Michigan, Ann Arbor, MI 48109, USAB. A. WeaverNSF’s National Optical-Infrared Astronomy Research Laboratory, 950 N. Cherry Avenue, Tucson, AZ 85719, USAKai ZhangLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAZhimin ZhouNational Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100012, People's Republic of China
2023en
ABI
Annotatsiya
Abstract 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 α 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.
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