The Astronomical Journal (Jan 2023)
Performance of the Quasar Spectral Templates for the Dark Energy Spectroscopic Instrument
- Allyson Brodzeller,
- Kyle Dawson,
- Stephen Bailey,
- Jiaxi Yu,
- A. J. Ross,
- A. Bault,
- S. Filbert,
- J. Aguilar,
- S. Ahlen,
- David M. Alexander,
- E. Armengaud,
- A. Berti,
- D. Brooks,
- E. Chaussidon,
- A. de la Macorra,
- P. Doel,
- K. Fanning,
- V. A. Fawcett,
- A. Font-Ribera,
- S. Gontcho A Gontcho,
- J. Guy,
- K. Honscheid,
- S. Juneau,
- R. Kehoe,
- T. Kisner,
- Anthony Kremin,
- Ting-Wen Lan,
- M. Landriau,
- Michael E. Levi,
- C. Magneville,
- Paul Martini,
- Aaron M. Meisner,
- R. Miquel,
- J. Moustakas,
- N. Palanque-Delabrouille,
- W. J. Percival,
- F. Prada,
- C. Ravoux,
- Graziano Rossi,
- C. Saulder,
- M. Siudek,
- Gregory Tarlé,
- B. A. Weaver,
- S. Youles,
- Zheng Zheng,
- Rongpu Zhou,
- Zhimin Zhou
Affiliations
- Allyson Brodzeller
- ORCiD
- Department of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112, USA ; [email protected]
- Kyle Dawson
- ORCiD
- Department of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112, USA ; [email protected]
- Stephen Bailey
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Jiaxi Yu
- Ecole Polytechnique Fédérale de Lausanne , CH-1015 Lausanne, Switzerland
- A. J. Ross
- ORCiD
- Center for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USA; Department of Astronomy, The Ohio State University , 4055 McPherson Laboratory, 140 W 18th Avenue, Columbus, OH 43210, USA; The Ohio State University , Columbus, OH 43210, USA
- A. Bault
- ORCiD
- Department of Physics and Astronomy, University of California , Irvine, CA 92697, USA
- S. Filbert
- The Ohio State University , Columbus, OH 43210, USA
- J. Aguilar
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- S. Ahlen
- ORCiD
- Physics Dept., Boston University , 590 Commonwealth Avenue, Boston, MA 02215, USA
- David M. Alexander
- ORCiD
- Centre for Extragalactic Astronomy, Department of Physics, Durham University , South Road, Durham DH1 3LE, UK; Institute for Computational Cosmology, Department of Physics, Durham University , South Road, Durham DH1 3LE, UK
- E. Armengaud
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- A. Berti
- ORCiD
- Department of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112, USA ; [email protected]
- D. Brooks
- ORCiD
- Department of Physics & Astronomy, University College London , Gower Street, London WC1E 6BT, UK
- E. Chaussidon
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- A. de la Macorra
- Instituto de Física, Universidad Nacional Autónoma de México , Cd. de México C.P. 04510, México
- P. Doel
- Department of Physics & Astronomy, University College London , Gower Street, London WC1E 6BT, UK
- K. Fanning
- ORCiD
- The Ohio State University , Columbus, OH 43210, USA
- V. A. Fawcett
- ORCiD
- School of Mathematics, Statistics and Physics, Newcastle University , Newcastle, UK
- A. Font-Ribera
- ORCiD
- Institut de Física dAltes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, E-08193 Bellaterra, Barcelona, Spain
- S. Gontcho A Gontcho
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- J. Guy
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- K. Honscheid
- Center for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USA; The Ohio State University , Columbus, OH 43210, USA; Department of Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USA
- S. Juneau
- ORCiD
- NSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- R. Kehoe
- ORCiD
- Department of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75275, USA
- T. Kisner
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Anthony Kremin
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Ting-Wen Lan
- ORCiD
- Graduate Institute of Astrophysics and Department of Physics, National Taiwan University , No. 1, Section 4, Roosevelt Road, Taipei 10617, Taiwan
- M. Landriau
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Michael E. Levi
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- C. Magneville
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- Paul Martini
- ORCiD
- Center for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USA; Department of Astronomy, The Ohio State University , 4055 McPherson Laboratory, 140 W 18th Avenue, Columbus, OH 43210, USA; The Ohio State University , Columbus, OH 43210, USA
- Aaron M. Meisner
- ORCiD
- NSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- R. Miquel
- ORCiD
- Institut de Física dAltes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, E-08193 Bellaterra, Barcelona, Spain; Institució Catalana de Recerca i Estudis Avançats , Passeig de Lluís Companys, 23, E-08010 Barcelona, Spain
- J. Moustakas
- ORCiD
- Department of Physics and Astronomy, Siena College , 515 Loudon Road, Loudonville, NY 12211, USA
- N. Palanque-Delabrouille
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA; IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- W. J. Percival
- ORCiD
- Department of Physics and Astronomy, University of Waterloo , 200 University Avenue W, Waterloo, ON N2L 3G1, Canada; Perimeter Institute for Theoretical Physics , 31 Caroline Street North, Waterloo, ON N2L 2Y5, Canada; Waterloo Centre for Astrophysics, University of Waterloo , 200 University Avenue W, Waterloo, ON N2L 3G1, Canada
- F. Prada
- ORCiD
- Instituto de Astrofísica de Andalucía (CSIC) , Glorieta de la Astronomía, s/n, E-18008 Granada, Spain
- C. Ravoux
- ORCiD
- Aix Marseille Univ , CNRS/IN2P3, CPPM, Marseille, France
- Graziano Rossi
- Department of Physics and Astronomy, Sejong University , Seoul, 143-747, Republic of Korea
- C. Saulder
- ORCiD
- Korea Astronomy and Space Science Institute , 776, Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea
- M. Siudek
- Institut de Física dAltes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, E-08193 Bellaterra, Barcelona, Spain; Institute of Space Sciences , ICE-CSIC, Campus UAB, Carrer de Can Magrans s/n, E-08913 Bellaterra, Barcelona, Spain
- Gregory Tarlé
- ORCiD
- University of Michigan , Ann Arbor, MI 48109, USA
- B. A. Weaver
- NSF’s NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- S. Youles
- ORCiD
- Institute of Cosmology & Gravitation, University of Portsmouth , Dennis Sciama Building, Portsmouth PO1 3FX, UK
- Zheng Zheng
- ORCiD
- Department of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112, USA ; [email protected]
- Rongpu Zhou
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Zhimin Zhou
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Rd., Chaoyang District, Beijing 100012, People's Republic of China
- DOI
- https://doi.org/10.3847/1538-3881/ace35d
- Journal volume & issue
-
Vol. 166,
no. 2
p. 66
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.
Keywords
