Performance of the Quasar Spectral Templates for the Dark Energy Spectroscopic Instrument
A. BrodzellerDepartment of Physics and Astronomy, The University of Utah, 115 South 1400 East, Salt Lake City, UT 84112, USA; [email protected]Kyle DawsonDepartment of Physics and Astronomy, The University of Utah, 115 South 1400 East, Salt Lake City, UT 84112, USA; [email protected]S. BaileyLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAJiaxi YuEcole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, SwitzerlandA.J. RossCenter for Cosmology and AstroParticle Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, OH 43210, USAA. BaultDepartment of Physics and Astronomy, University of California, Irvine, CA 92697, USAS. FilbertThe Ohio State University, Columbus, OH 43210, USAJ. AguilarLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAS. AhlenPhysics Dept., Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USAD. M. AlexanderCentre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham DH1 3LE, UKE. ArmengaudIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceA. BertiDepartment of Physics and Astronomy, The University of Utah, 115 South 1400 East, Salt Lake City, UT 84112, USA; [email protected]David BrooksDepartment of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UKE. ChaussidonIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceAxel de la MacorraInstituto de Física, Universidad Nacional Autónoma de México, Cd. de México C.P. 04510, MéxicoP. DoelDepartment of Physics & Astronomy, University College London, Gower Street, London WC1E 6BT, UKK. FanningThe Ohio State University, Columbus, OH 43210, USAVictoria A. FawcettSchool of Mathematics, Statistics and Physics, Newcastle University, Newcastle, UKAndreu Font-RiberaInstitut de Física dAltes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra, Barcelona, SpainSatya Gontcho A GontchoLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAJ. GuyLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAK. HonscheidCenter for Cosmology and AstroParticle Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, OH 43210, USAS. JuneauNSF’s NOIRLab, 950 N. Cherry Avenue, Tucson, AZ 85719, USAR. KehoeDepartment of Physics, Southern Methodist University, 3215 Daniel Avenue, Dallas, TX 75275, USATheodore KisnerLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAAnthony KreminLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USATing-Wen LanGraduate Institute of Astrophysics and Department of Physics, National Taiwan University, No. 1, Section 4, Roosevelt Road, Taipei 10617, TaiwanMartin LandriauLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAM. E. LeviLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAC. MagnevilleIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceJ. ErezaCenter for Cosmology and AstroParticle Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, OH 43210, USAAaron MeisnerNSF’s NOIRLab, 950 N. Cherry Avenue, Tucson, AZ 85719, USAR. MiquelInstitució Catalana de Recerca i Estudis Avançats, Passeig de Lluís Companys, 23, E-08010 Barcelona, SpainJohn MoustakasDepartment of Physics and Astronomy, Siena College, 515 Loudon Road, Loudonville, NY 12211, USAN. 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, CanadaFrancisco PradaInstituto de Astrofísica de Andalucía (CSIC), Glorieta de la Astronomía, s/n, E-18008 Granada, SpainC. RavouxAix-Marseille UniversitéGraziano RossiDepartment of Physics and Astronomy, Sejong University, Seoul, 143-747, Republic of KoreaChristoph SaulderKorea Astronomy and Space Science Institute, 776, Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of KoreaM. SiudekInstitut de Física dAltes Energies (IFAE), The Barcelona Institute of Science and Technology, Campus UAB, E-08193 Bellaterra, Barcelona, SpainG. TarléUniversity of Michigan, Ann Arbor, MI 48109, USAB. A. WeaverNSF’s NOIRLab, 950 N. Cherry Avenue, Tucson, AZ 85719, USASamantha YoulesInstitute of Cosmology & Gravitation, University of Portsmouth, Dennis Sciama Building, Portsmouth PO1 3FX, UKZheng ZhengDepartment of Physics and Astronomy, The University of Utah, 115 South 1400 East, Salt Lake City, UT 84112, USA; [email protected]Rongpu ZhouLawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USAZhimin ZhouNational Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Rd., Chaoyang District, Beijing 100012, People's Republic of China
2023en
ABI
Abstract
Abstract Millions of quasar spectra will be collected by the Dark Energy Spectroscopic Instrument (DESI), leading to a fourfold increase in the number of known quasars. High-accuracy quasar classification is essential to tighten constraints on cosmological parameters measured at the highest redshifts DESI observes ( z > 2.0). We present spectral templates for identification and redshift estimation of quasars in the DESI Year 1 data release. The quasar templates are comprised of two quasar eigenspectra sets, trained on spectra from the Sloan Digital Sky Survey. The sets are specialized to reconstruct quasar spectral variation observed over separate yet overlapping redshift ranges and, together, are capable of identifying DESI quasars from 0.05 < z < 7.0. The new quasar templates show significant improvement over the previous DESI quasar templates regarding catastrophic failure rates, redshift precision and accuracy, quasar completeness, and the contamination fraction in the final quasar sample.
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Citations and references
Cited by 30 references