The Astronomical Journal (Jan 2023)
The Target-selection Pipeline for the Dark Energy Spectroscopic Instrument
- Adam D. Myers,
- John Moustakas,
- Stephen Bailey,
- Benjamin A. Weaver,
- Andrew P. Cooper,
- Jaime E. Forero-Romero,
- Bela Abolfathi,
- David M. Alexander,
- David Brooks,
- Edmond Chaussidon,
- Chia-Hsun Chuang,
- Kyle Dawson,
- Arjun Dey,
- Biprateep Dey,
- Govinda Dhungana,
- Peter Doel,
- Kevin Fanning,
- Enrique Gaztañaga,
- Satya Gontcho A Gontcho,
- Alma X. Gonzalez-Morales,
- ChangHoon Hahn,
- Hiram K. Herrera-Alcantar,
- Klaus Honscheid,
- Mustapha Ishak,
- Tanveer Karim,
- David Kirkby,
- Theodore Kisner,
- Sergey E. Koposov,
- Anthony Kremin,
- Ting-Wen Lan,
- Martin Landriau,
- Dustin Lang,
- Michael E. Levi,
- Christophe Magneville,
- Lucas Napolitano,
- Paul Martini,
- Aaron Meisner,
- Jeffrey A. Newman,
- Nathalie Palanque-Delabrouille,
- Will Percival,
- Claire Poppett,
- Francisco Prada,
- Anand Raichoor,
- Ashley J. Ross,
- Edward F. Schlafly,
- David Schlegel,
- Michael Schubnell,
- Ting Tan,
- Gregory Tarle,
- Michael J. Wilson,
- Christophe Yèche,
- Rongpu Zhou,
- Zhimin Zhou,
- Hu Zou
Affiliations
- Adam D. Myers
- Department of Physics and Astronomy, University of Wyoming , Laramie, WY 82071, USA ; [email protected]
- John Moustakas
- ORCiD
- Department of Physics and Astronomy, Siena College , 515 Loudon Road, Loudonville, NY 12211, USA
- Stephen Bailey
- ORCiD
- Lawrence Berkeley National Laboratory , One Cyclotron Road, Berkeley, CA 94720, USA
- Benjamin A. Weaver
- NSF’s National Optical-Infrared Astronomy Research Laboratory , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- Andrew P. Cooper
- ORCiD
- Institute of Astronomy and Department of Physics, National Tsing Hua University , 101 Kuang-Fu Rd. Section 2, Hsinchu 30013, Taiwan
- Jaime E. Forero-Romero
- ORCiD
- Departamento de Física, Universidad de los Andes , Cra. 1 No. 18A-10, Bogotá, Colombia
- Bela Abolfathi
- ORCiD
- Department of Physics and Astronomy, University of California, Irvine , Frederick Reines Hall, Irvine, CA 92697, USA
- David M. Alexander
- ORCiD
- Centre for Extragalactic Astronomy, Department of Physics, Durham University , South Road, Durham, DH1 3LE, UK
- David Brooks
- ORCiD
- Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- Edmond Chaussidon
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- Chia-Hsun Chuang
- ORCiD
- Department of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112, USA; Kavli Institute for Particle Astrophysics and Cosmology, Stanford University , 452 Lomita Mall, Stanford, CA 94305, USA
- Kyle Dawson
- ORCiD
- Department of Physics and Astronomy, The University of Utah , 115 South 1400 East, Salt Lake City, UT 84112, USA
- Arjun Dey
- ORCiD
- NSF’s National Optical-Infrared Astronomy Research Laboratory , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- Biprateep Dey
- ORCiD
- Department of Physics and Astronomy and PITT-PACC, University of Pittsburgh , 100 Allen Hall, 3941 O’Hara Street, Pittsburgh, PA 15260, USA
- Govinda Dhungana
- ORCiD
- Department of Physics, Southern Methodist University , 3215 Daniel Avenue, Dallas, TX 75205, USA
- Peter Doel
- Department of Physics & Astronomy, University College London , Gower Street, London, WC1E 6BT, UK
- Kevin Fanning
- Department of Physics, The Ohio State University , 191 West Woodruff Avenue, Columbus, OH 43210, USA; Center for Cosmology and AstroParticle Physics, The Ohio State University , Columbus, OH 43210, USA
- Enrique Gaztañaga
- ORCiD
- Institut de Cìencies de l’Espai , IEEC-CSIC, Campus UAB, Carrer de Can Magrans s/n, E-08913 Bellaterra, Barcelona, Spain
- Satya Gontcho A Gontcho
- Lawrence Berkeley National Laboratory , One Cyclotron Road, Berkeley, CA 94720, USA; Department of Physics and Astronomy, University of Rochester , 500 Joseph C. Wilson Boulevard, Rochester, NY 14627, USA
- Alma X. Gonzalez-Morales
- ORCiD
- Consejo Nacional de Ciencia y Tecnología , Av. Insurgentes Sur 1582. Colonia Credito Constructor, Del. Benito Jurez C.P. 03940, México D.F., Mexico; Departamento de Física, Universidad de Guanajuato—DCI , C.P. 37150, Leon, Guanajuato, Mexico
- ChangHoon Hahn
- ORCiD
- Lawrence Berkeley National Laboratory , One Cyclotron Road, Berkeley, CA 94720, USA; Department of Astrophysical Sciences, Princeton University , Peyton Hall, Princeton, NJ 08544, USA
- Hiram K. Herrera-Alcantar
- ORCiD
- Departamento de Física, Universidad de Guanajuato—DCI , C.P. 37150, Leon, Guanajuato, Mexico
- Klaus Honscheid
- 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
- Tanveer Karim
- ORCiD
- Harvard-Smithsonian Center for Astrophysics , 60 Garden Street, Cambridge, MA 02138, USA
- David Kirkby
- ORCiD
- Department of Physics and Astronomy, University of California, Irvine , Frederick Reines Hall, Irvine, CA 92697, USA
- Theodore Kisner
- ORCiD
- Lawrence Berkeley National Laboratory , One Cyclotron Road, Berkeley, CA 94720, USA
- Sergey E. Koposov
- ORCiD
- Institute for Astronomy, University of Edinburgh , Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UK; Institute of Astronomy, University of Cambridge , Madingley Road, Cambridge, CB3 0HA, UK
- Anthony Kremin
- ORCiD
- Lawrence Berkeley National Laboratory , One Cyclotron Road, Berkeley, CA 94720, USA
- Ting-Wen Lan
- ORCiD
- Department of Physics, National Taiwan University , Taipei 10617, Taiwan; Graduate Institute of Astrophysics, National Taiwan University , Taipei 10617, Taiwan
- Martin Landriau
- ORCiD
- Lawrence Berkeley National Laboratory , One Cyclotron Road, Berkeley, CA 94720, USA
- Dustin Lang
- ORCiD
- Perimeter Institute for Theoretical Physics , 31 Caroline Street North, Waterloo, ON N2L 2Y5, Canada
- Michael E. Levi
- ORCiD
- Lawrence Berkeley National Laboratory , One Cyclotron Road, Berkeley, CA 94720, USA
- Christophe Magneville
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- Lucas Napolitano
- ORCiD
- Department of Physics and Astronomy, University of Wyoming , Laramie, WY 82071, USA ; [email protected]
- Paul Martini
- ORCiD
- Center for Cosmology and AstroParticle Physics, The Ohio State University , Columbus, OH 43210, USA; Department of Astronomy, The Ohio State University , Columbus, OH 43210, USA; Radcliffe Institute for Advanced Study, Harvard University , Cambridge, MA 02138, USA
- Aaron Meisner
- ORCiD
- NSF’s National Optical-Infrared Astronomy Research Laboratory , 950 N. Cherry Avenue, Tucson, AZ 85719, USA
- Jeffrey A. Newman
- ORCiD
- Department of Physics and Astronomy and PITT-PACC, University of Pittsburgh , 100 Allen Hall, 3941 O’Hara Street, Pittsburgh, PA 15260, USA
- Nathalie Palanque-Delabrouille
- ORCiD
- Lawrence Berkeley National Laboratory , One Cyclotron Road, Berkeley, CA 94720, USA; IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- Will Percival
- ORCiD
- Perimeter Institute for Theoretical Physics , 31 Caroline Street North, Waterloo, ON N2L 2Y5, Canada; Department of Physics and Astronomy, University of Waterloo , 200 University Avenue W, Waterloo, ON, N2L 3G1, Canada
- Claire Poppett
- Space Sciences Laboratory at University of California , 7 Gauss Way, 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 , One Cyclotron Road, Berkeley, CA 94720, USA
- Ashley J. Ross
- Center for Cosmology and AstroParticle Physics, The Ohio State University , Columbus, OH 43210, USA
- Edward F. Schlafly
- ORCiD
- Lawrence Livermore National Laboratory , P.O. Box 808 L-211, Livermore, CA 94551, USA
- David Schlegel
- ORCiD
- Lawrence Berkeley National Laboratory , One Cyclotron Road, Berkeley, CA 94720, USA
- Michael Schubnell
- Department of Physics, University of Michigan , 450 Church Street, Ann Arbor, MI 48109, USA
- Ting Tan
- ORCiD
- Sorbonne Université , CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), F-75005 Paris, France
- Gregory Tarle
- ORCiD
- Department of Physics, University of Michigan , 450 Church Street, Ann Arbor, MI 48109, USA
- Michael J. Wilson
- Lawrence Berkeley National Laboratory , One Cyclotron Road, Berkeley, CA 94720, USA; Institute for Computational Cosmology, Department of Physics, Durham University , South Road, Durham, DH1 3LE, UK
- Christophe Yèche
- ORCiD
- IRFU, CEA, Université Paris-Saclay , F-91191 Gif-sur-Yvette, France
- Rongpu Zhou
- ORCiD
- Lawrence Berkeley National Laboratory , One 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
- Hu Zou
- 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/aca5f9
- Journal volume & issue
-
Vol. 165,
no. 2
p. 50
Abstract
In 2021 May, the Dark Energy Spectroscopic Instrument (DESI) began a 5 yr survey of approximately 50 million total extragalactic and Galactic targets. The primary DESI dark-time targets are emission line galaxies, luminous red galaxies, and quasars. In bright time, DESI will focus on two surveys known as the Bright Galaxy Survey and the Milky Way Survey. DESI also observes a selection of “secondary” targets for bespoke science goals. This paper gives an overview of the publicly available pipeline ( desitarget ) used to process targets for DESI observations. Highlights include details of the different DESI survey targeting phases, the targeting ID ( TARGETID ) used to define unique targets, the bitmasks used to indicate a particular type of target, the data model and structure of DESI targeting files, and examples of how to access and use the desitarget code base. This paper will also describe “supporting” DESI target classes, such as standard stars, sky locations, and random catalogs that mimic the angular selection function of DESI targets. The DESI target-selection pipeline is complex and sizable; this paper attempts to summarize the most salient information required to understand and work with DESI targeting data.
Keywords
