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Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument
dc.contributor.author | Adame, A. G. | |
dc.contributor.author | Álvarez, M. A. | |
dc.date.accessioned | 2024-06-27T16:17:46Z | |
dc.date.available | 2024-06-27T16:17:46Z | |
dc.date.issued | 2024-01-15 | |
dc.identifier.citation | Adame, A. G., Aguilar, J., Ahlen, S., Alam, S., Aldering, G., Alexander, D. M., ... & Leauthaud, A. (2024). Validation of the scientific program for the Dark Energy Spectroscopic Instrument. The Astronomical Journal, 167(2), 62. DOI 10.3847/1538-3881/ad0b08 | es_ES |
dc.identifier.issn | 0004-6256 | |
dc.identifier.issn | 1538-3881 | |
dc.identifier.uri | http://hdl.handle.net/2183/37517 | |
dc.description | Data Availability The Data Release 9 of the DESI Legacy Imaging Surveys is available at https://legacysurvey.org/dr9/. Documentation of DESI data access is maintained at https://data.desi.lbl.gov/doc/access/. All data points used in published graphs are available in Zenodo: doi: [doi:10.5281/zenodo.10063934]. | es_ES |
dc.description.abstract | [Abstract]: The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg2 over 5 yr to constrain the cosmic expansion history through precise measurements of baryon acoustic oscillations (BAO). The scientific program for DESI was evaluated during a 5 month survey validation (SV) campaign before beginning full operations. This program produced deep spectra of tens of thousands of objects from each of the stellar Milky Way Survey (MWS), Bright Galaxy Survey (BGS), luminous red galaxy (LRG), emission line galaxy (ELG), and quasar target classes. These SV spectra were used to optimize redshift distributions, characterize exposure times, determine calibration procedures, and assess observational overheads for the 5 yr program. In this paper, we present the final target selection algorithms, redshift distributions, and projected cosmology constraints resulting from those studies. We also present a One-Percent Survey conducted at the conclusion of SV covering 140 deg2 using the final target selection algorithms with exposures of a depth typical of the main survey. The SV indicates that DESI will be able to complete the full 14,000 deg2 program with spectroscopically confirmed targets from the MWS, BGS, LRG, ELG, and quasar programs with total sample sizes of 7.2, 13.8, 7.46, 15.7, and 2.87 million, respectively. These samples will allow exploration of the Milky Way halo, clustering on all scales, and BAO measurements with a statistical precision of 0.28% over the redshift interval z < 1.1, 0.39% over the redshift interval 1.1 < z < 1.9, and 0.46% over the redshift interval 1.9 < z < 3.5. | es_ES |
dc.description.sponsorship | This material is based upon work supported by the U.S. Department of Energy (DOE), Office of Science, Office of High-Energy Physics, under contract No. DE-AC02-05CH11231, and by the National Energy Research Scientific Computing Center, a DOE Office of Science User Facility under the same contract. Additional support for DESI was provided by the U.S. National Science Foundation (NSF), Division of Astronomical Sciences under contract No. AST-0950945 to the NSF's National Optical-Infrared Astronomy Research Laboratory; the Science and Technology Facilities Council of the United Kingdom; the Gordon and Betty Moore Foundation; the Heising-Simons Foundation; the French Alternative Energies and Atomic Energy Commission (CEA); the National Council of Science and Technology of Mexico (CONACYT); the Ministry of Science and Innovation of Spain (MICINN), and by the DESI Member Institutions: https://desi.lbl.gov/collaborating-institutions. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the U.S. National Science Foundation, the U.S. Department of Energy, or any of the listed funding agencies. The authors are honored to be permitted to conduct scientific research on Iolkam Du'ag (Kitt Peak), a mountain with particular significance to the Tohono O'odham Nation. | es_ES |
dc.description.sponsorship | United States. Department of Energy; DE-AC02-05CH11231 | es_ES |
dc.description.sponsorship | United States. National Science Foundation; AST-0950945 | es_ES |
dc.language.iso | eng | es_ES |
dc.publisher | IOP Publishing | es_ES |
dc.relation.uri | https://doi.org/10.3847/1538-3881/ad0b08 | es_ES |
dc.rights | Atribución 4.0 Internacional | es_ES |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.subject | Cosmology | es_ES |
dc.subject | Redshift surveys | es_ES |
dc.subject | Dark Energy Spectroscopic Instrument (DESI) | es_ES |
dc.title | Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.rights.access | info:eu-repo/semantics/openAccess | es_ES |
UDC.journalTitle | The Astronomical Journal (AJ) | es_ES |
UDC.volume | 167 | es_ES |
UDC.issue | 2 | es_ES |
UDC.startPage | 1 | es_ES |
UDC.endPage | 33 | es_ES |
dc.identifier.doi | 10.3847/1538-3881/ad0b08 |