The Astrophysical Journal (Jan 2023)
Target Selection and Validation of DESI Quasars
- Edmond Chaussidon,
- Christophe Yèche,
- Nathalie Palanque-Delabrouille,
- David M. Alexander,
- Jinyi Yang,
- Steven Ahlen,
- Stephen Bailey,
- David Brooks,
- Zheng Cai,
- Solène Chabanier,
- Tamara M. Davis,
- Kyle Dawson,
- Axel de laMacorra,
- Arjun Dey,
- Biprateep Dey,
- Sarah Eftekharzadeh,
- Daniel J. Eisenstein,
- Kevin Fanning,
- Andreu Font-Ribera,
- Enrique Gaztañaga,
- Satya Gontcho A Gontcho,
- Alma X. Gonzalez-Morales,
- Julien Guy,
- Hiram K. Herrera-Alcantar,
- Klaus Honscheid,
- Mustapha Ishak,
- Linhua Jiang,
- Stephanie Juneau,
- Robert Kehoe,
- Theodore Kisner,
- Andras Kovács,
- Anthony Kremin,
- Ting-Wen Lan,
- Martin Landriau,
- Laurent Le Guillou,
- Michael E. Levi,
- Christophe Magneville,
- Paul Martini,
- Aaron M. Meisner,
- John Moustakas,
- Andrea Muñoz-Gutiérrez,
- Adam D. Myers,
- Jeffrey A. Newman,
- Jundan Nie,
- Will J. Percival,
- Claire Poppett,
- Francisco Prada,
- Anand Raichoor,
- Corentin Ravoux,
- Ashley J. Ross,
- Edward Schlafly,
- David Schlegel,
- Ting Tan,
- Gregory Tarlé,
- Rongpu Zhou,
- Zhimin Zhou,
- Hu Zou
Affiliations
- Edmond Chaussidon
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France ; [email protected]
- Christophe Yèche
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France ; [email protected]
- Nathalie Palanque-Delabrouille
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France ; [email protected]; Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, 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
- Jinyi Yang
- ORCiD
- Steward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USA
- Steven Ahlen
- ORCiD
- Physics Department, Boston University , 590 Commonwealth Avenue, Boston, MA 02215, USA
- Stephen Bailey
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- David Brooks
- ORCiD
- Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- Zheng Cai
- ORCiD
- Department of Astronomy, Tsinghua University , Beijing 100084, People’s Republic of China
- Solène Chabanier
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Tamara M. Davis
- ORCiD
- School of Mathematics and Physics, University of Queensland , Brisbane, QLD, 4072, Australia
- Kyle Dawson
- ORCiD
- Department of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112, USA
- Axel de laMacorra
- Instituto de Física, Universidad Nacional Autónoma de México , Ciudad de México C.P. 04510, México
- Arjun Dey
- ORCiD
- NSF's NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- Biprateep Dey
- ORCiD
- Department of Physics & Astronomy and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh , 3941 O’Hara Street, Pittsburgh, PA 15260, USA
- Sarah Eftekharzadeh
- Universities Space Research Association, NASA Ames Research Center , Moffett Field, CA, USA
- Daniel J. Eisenstein
- ORCiD
- Center for Astrophysics ∣ Harvard & Smithsonian , 60 Garden Street, Cambridge, MA 02138, USA
- Kevin Fanning
- 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
- Andreu Font-Ribera
- ORCiD
- Institut de Física d’Altes Energies (IFAE), The Barcelona Institute of Science and Technology , Campus UAB, E-08193 Bellaterra Barcelona, Spain
- Enrique Gaztañaga
- ORCiD
- Institut d’Estudis Espacials de Catalunya (IEEC) , E-08034 Barcelona, Spain; Institute of Space Sciences , ICE-CSIC, Campus UAB, Carrer de Can Magrans s/n, E-08913 Bellaterra, Barcelona, Spain
- Satya Gontcho A Gontcho
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Alma X. Gonzalez-Morales
- ORCiD
- Consejo Nacional de Ciencia y Tecnología , Avenida Insurgentes Sur 1582. Colonia Crédito Constructor, Del. Benito Juárez C.P. 03940, México D.F. México; Departamento de Física, Universidad de Guanajuato—DCI , C.P. 37150, Leon, Guanajuato, México
- Julien Guy
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Hiram K. Herrera-Alcantar
- ORCiD
- Departamento de Física, Universidad de Guanajuato—DCI , C.P. 37150, Leon, Guanajuato, México
- Klaus Honscheid
- Center for Cosmology and AstroParticle Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USA; Department of Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USA
- Mustapha Ishak
- ORCiD
- Department of Physics, The University of Texas at Dallas , Richardson, TX, 75080, USA
- Linhua Jiang
- ORCiD
- Kavli Institute for Astronomy and Astrophysics at Peking University , PKU, 5 Yiheyuan Road, Haidian District, Beijing 100871, People’s Republic of China
- Stephanie Juneau
- ORCiD
- NSF's NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- Robert Kehoe
- ORCiD
- Department of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75275, USA
- Theodore Kisner
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Andras Kovács
- ORCiD
- Departamento de Astrofísica, Universidad de La Laguna (ULL) , E-38206, La Laguna, Tenerife, Spain; Instituto de Astrofísica de Canarias , C/ Vía Láctea, s/n, E-38205 San Cristóbal de La Laguna, Santa Cruz de Tenerife, Spain
- 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, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan
- Martin Landriau
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Laurent Le Guillou
- ORCiD
- Sorbonne Université , CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), F-75005 Paris, France
- Michael E. Levi
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Christophe Magneville
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France ; [email protected]
- 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
- Aaron M. Meisner
- ORCiD
- NSF's NOIRLab , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- John Moustakas
- ORCiD
- Department of Physics and Astronomy, Siena College , 515 Loudon Road, Loudonville, NY 12211, USA
- Andrea Muñoz-Gutiérrez
- Instituto de Física, Universidad Nacional Autónoma de México , Ciudad de México C.P. 04510, México
- Adam D. Myers
- Department of Physics & Astronomy, University of Wyoming , 1000 E. University, Department 3905, Laramie, WY 82071, USA
- Jeffrey A. Newman
- ORCiD
- Department of Physics & Astronomy and Pittsburgh Particle Physics, Astrophysics, and Cosmology Center (PITT PACC), University of Pittsburgh , 3941 O’Hara Street, Pittsburgh, PA 15260, USA
- Jundan Nie
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Road, Chaoyang District, Beijing, 100012, People’s Republic of China
- Will 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 West, Waterloo, ON N2L 3G1, Canada
- Claire Poppett
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA; Space Sciences Laboratory, University of California, Berkeley , 7 Gauss Way, Berkeley, CA 94720, USA; University of California , Berkeley, 110 Sproul Hall #5800, Berkeley, CA 94720, USA
- Francisco Prada
- ORCiD
- Instituto de Astrofisica de Andalucía , Glorieta de la Astronomía, s/n, E-18008 Granada, Spain
- Anand Raichoor
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Corentin Ravoux
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France ; [email protected]
- Ashley J. Ross
- 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
- Edward Schlafly
- ORCiD
- Lawrence Livermore National Laboratory , P.O. Box 808 L-211, Livermore, CA 94551, USA
- David Schlegel
- ORCiD
- Lawrence Berkeley National Laboratory , 1 Cyclotron Road, Berkeley, CA 94720, USA
- Ting Tan
- ORCiD
- Sorbonne Université , CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), F-75005 Paris, France
- Gregory Tarlé
- ORCiD
- University of Michigan , Ann Arbor, MI 48109, USA
- 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 Road, Chaoyang District, Beijing, 100012, People’s Republic of China
- Hu Zou
- ORCiD
- National Astronomical Observatories, Chinese Academy of Sciences , A20 Datun Road, Chaoyang District, Beijing, 100012, People’s Republic of China
- DOI
- https://doi.org/10.3847/1538-4357/acb3c2
- Journal volume & issue
-
Vol. 944,
no. 1
p. 107
Abstract
The Dark Energy Spectroscopic Instrument (DESI) survey will measure large-scale structures using quasars as direct tracers of dark matter in the redshift range 0.9 2.1. We present several methods to select candidate quasars for DESI, using input photometric imaging in three optical bands ( g , r , z ) from the DESI Legacy Imaging Surveys and two infrared bands (W1, W2) from the Wide-field Infrared Survey Explorer. These methods were extensively tested during the Survey Validation of DESI. In this paper, we report on the results obtained with the different methods and present the selection we optimized for the DESI main survey. The final quasar target selection is based on a random forest algorithm and selects quasars in the magnitude range of 16.5 2.1), exceeding the project requirements by 20%. The redshift distribution of the selected quasars is in excellent agreement with quasar luminosity function predictions.
Keywords
