The Target-selection Pipeline for the Dark Energy Spectroscopic Instrument
Adam D. MyersDepartment of Physics and Astronomy, University of Wyoming, Laramie, WY 82071, USA; [email protected]John MoustakasDepartment of Physics and Astronomy, Siena College, 515 Loudon Road, Loudonville, NY 12211, USAS. BaileyLawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USABenjamin A. WeaverNSF’s National Optical-Infrared Astronomy Research Laboratory, 950 N. Cherry Avenue, Tucson, AZ 85719, USAAndrew P. CooperInstitute of Astronomy and Department of Physics, National Tsing Hua University, 101 Kuang-Fu Rd. Section 2, Hsinchu 30013, TaiwanJ. E. Forero-RomeroDepartamento de Física, Universidad de los Andes, Cra. 1 No. 18A-10, Bogotá, ColombiaBela AbolfathiDepartment of Physics and Astronomy, University of California, Irvine, Frederick Reines Hall, Irvine, CA 92697, USAD. M. AlexanderCentre for Extragalactic Astronomy, Department of Physics, Durham University, South Road, Durham, DH1 3LE, UKDavid BrooksDepartment of Physics & Astronomy, University College London, Gower Street, London, WC1E 6BT, UKE. ChaussidonIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceChia-Hsun ChuangDepartment of Physics and Astronomy, The University of Utah, 115 South 1400 East, Salt Lake City, UT 84112, USAKyle DawsonDepartment of Physics and Astronomy, The University of Utah, 115 South 1400 East, Salt Lake City, UT 84112, USAArjun DeyNSF’s National Optical-Infrared Astronomy Research Laboratory, 950 N. Cherry Avenue, Tucson, AZ 85719, USABiprateep DeyDepartment of Physics and Astronomy and PITT-PACC, University of Pittsburgh, 100 Allen Hall, 3941 O’Hara Street, Pittsburgh, PA 15260, USAG. DhunganaDepartment of Physics, Southern Methodist University, 3215 Daniel Avenue, Dallas, TX 75205, USAPeter DoelDepartment of Physics & Astronomy, University College London, Gower Street, London, WC1E 6BT, UKKevin FanningCenter for Cosmology and AstroParticle Physics, The Ohio State University, Columbus, OH 43210, USAE. GaztañagaInstitut de Cìencies de l’Espai, IEEC-CSIC, Campus UAB, Carrer de Can Magrans s/n, E-08913 Bellaterra, Barcelona, SpainSatya Gontcho A GontchoDepartment of Physics and Astronomy, University of Rochester, 500 Joseph C. Wilson Boulevard, Rochester, NY 14627, USAAlma X. González‐MoralesConsejo Nacional de Ciencia y Tecnología, Av. Insurgentes Sur 1582. Colonia Credito Constructor, Del. Benito Jurez C.P. 03940, México D.F., MexicoChang Hoon HahnDepartment of Astrophysical Sciences, Princeton University, Peyton Hall, Princeton, NJ 08544, USAH. K. Herrera-AlcantarDepartamento de Física, Universidad de Guanajuato—DCI, C.P. 37150, Leon, Guanajuato, MexicoK. HonscheidDepartment of Physics, The Ohio State University, 191 West Woodruff Avenue, Columbus, OH 43210, USAMustapha IshakDepartment of Physics, The University of Texas at Dallas, Richardson, TX 75080, USATanveer KarimHarvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USAD. KirkbyDepartment of Physics and Astronomy, University of California, Irvine, Frederick Reines Hall, Irvine, CA 92697, USATheodore KisnerLawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USAS. E. KoposovInstitute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh, EH9 3HJ, UKAnthony KreminLawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USATing-Wen LanDepartment of Physics, National Taiwan University, Taipei 10617, TaiwanMartin LandriauLawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USADustin LangPerimeter Institute for Theoretical Physics, 31 Caroline Street North, Waterloo, ON N2L 2Y5, CanadaM. E. LeviLawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USAC. MagnevilleIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceL. NapolitanoDepartment of Physics and Astronomy, University of Wyoming, Laramie, WY 82071, USA; [email protected]Paul MartiniCenter for Cosmology and AstroParticle Physics, The Ohio State University, Columbus, OH 43210, USAAaron MeisnerNSF’s National Optical-Infrared Astronomy Research Laboratory, 950 N. Cherry Avenue, Tucson, AZ 85719, USAJeffrey A. NewmanDepartment of Physics and Astronomy and PITT-PACC, University of Pittsburgh, 100 Allen Hall, 3941 O’Hara Street, Pittsburgh, PA 15260, 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, CanadaClaire PoppettSpace Sciences Laboratory at University of California, 7 Gauss Way, Berkeley, CA 94720, USAFrancisco PradaInstituto de Astrofisica de Andalucía, Glorieta de la Astronomía, s/n, E-18008 Granada, SpainAnand RaichoorLawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USAA.J. RossCenter for Cosmology and AstroParticle Physics, The Ohio State University, Columbus, OH 43210, USAEdward F. SchlaflyLawrence Livermore National Laboratory, P.O. Box 808 L-211, Livermore, CA 94551, USADavid J. SchlegelLawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USAM. SchubnellDepartment of Physics, University of Michigan, 450 Church Street, Ann Arbor, MI 48109, USAT. TanSorbonne Université, CNRS/IN2P3, Laboratoire de Physique Nucléaire et de Hautes Energies (LPNHE), F-75005 Paris, FranceG. TarléDepartment of Physics, University of Michigan, 450 Church Street, Ann Arbor, MI 48109, USAMichael WilsonInstitute for Computational Cosmology, Department of Physics, Durham University, South Road, Durham, DH1 3LE, UKChristophe YècheIRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, FranceRongpu ZhouLawrence Berkeley National Laboratory, One Cyclotron Road, Berkeley, CA 94720, USAZhimin ZhouNational Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Rd., Chaoyang District, Beijing, 100012, People's Republic of ChinaH. ZouNational Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Rd., Chaoyang District, Beijing, 100012, People's Republic of China
2023en
ABI
Аннотация
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.
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