Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument
Abstract
The Dark Energy Spectroscopic Instrument (DESI) was designed to conduct a survey covering 14,000 deg over five years to constrain the cosmic expansion history through precise measurements of Baryon Acoustic Oscillations (BAO). The scientific program for DESI was evaluated during a five 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 (MWS), bright galaxy (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 five-year 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 Survey Validation covering 140 deg using the final target selection algorithms with exposures of a depth typical of the main survey. The Survey Validation indicates that DESI will be able to complete the full 14,000 deg 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 , 0.39% over the redshift interval , and 0.46% over the redshift interval .
Keywords
Cite
@article{arxiv.2306.06307,
title = {Validation of the Scientific Program for the Dark Energy Spectroscopic Instrument},
author = {DESI Collaboration and A. G. Adame and J. Aguilar and S. Ahlen and S. Alam and G. Aldering and D. M. Alexander and R. Alfarsy and C. Allende Prieto and M. Alvarez and O. Alves and A. Anand and F. Andrade-Oliveira and E. Armengaud and J. Asorey and S. Avila and A. Aviles and S. Bailey and A. Balaguera-Antolínez and O. Ballester and C. Baltay and A. Bault and J. Bautista and J. Behera and S. F. Beltran and S. BenZvi and L. Beraldo e Silva and J. R. Bermejo-Climent and A. Berti and R. Besuner and F. Beutler and D. Bianchi and C. Blake and R. Blum and A. S. Bolton and S. Brieden and A. Brodzeller and D. Brooks and Z. Brown and E. Buckley-Geer and E. Burtin and L. Cabayol-Garcia and Z. Cai and R. Canning and L. Cardiel-Sas and A. Carnero Rosell and F. J. Castander and J. L. Cervantes-Cota and S. Chabanier and E. Chaussidon and J. Chaves-Montero and S. Chen and C. Chuang and T. Claybaugh and S. Cole and A. P. Cooper and A. Cuceu and T. M. Davis and K. Dawson and R. de Belsunce and R. de la Cruz and A. de la Macorra and A. de Mattia and R. Demina and U. Demirbozan and J. DeRose and A. Dey and B. Dey and G. Dhungana and J. Ding and Z. Ding and P. Doel and R. Doshi and K. Douglass and A. Edge and S. Eftekharzadeh and D. J. Eisenstein and A. Elliott and S. Escoffier and P. Fagrelius and X. Fan and K. Fanning and V. A. Fawcett and S. Ferraro and J. Ereza and B. Flaugher and A. Font-Ribera and D. Forero-Sánchez and J. E. Forero-Romero and C. S. Frenk and B. T. Gänsicke and L. Á. García and J. García-Bellido and C. Garcia-Quintero and L. H. Garrison and H. Gil-Marín and J. Golden-Marx and S. Gontcho A Gontcho and A. X. Gonzalez-Morales and V. Gonzalez-Perez and C. Gordon and O. Graur and D. Green and D. Gruen and J. Guy and B. Hadzhiyska and C. Hahn and J. J. Han and M. M. S Hanif and H. K. Herrera-Alcantar and K. Honscheid and J. Hou and C. Howlett and D. Huterer and V. Iršič and M. Ishak and A. Jana and L. Jiang and J. Jimenez and Y. P. Jing and S. Joudaki and R. Joyce and E. Jullo and S. Juneau and N. Kizhuprakkat and N. G. Karaçaylı and T. Karim and R. Kehoe and S. Kent and A. Khederlarian and S. Kim and D. Kirkby and T. Kisner and F. Kitaura and J. Kneib and S. E. Koposov and A. Kovács and A. Kremin and A. Krolewski and B. L'Huillier and O. Lahav and A. Lambert and C. Lamman and T. -W. Lan and M. Landriau and D. Lang and J. U. Lange and J. Lasker and L. Le Guillou and A. Leauthaud and M. E. Levi and T. S. Li and E. Linder and A. Lyons and C. Magneville and M. Manera and C. J. Manser and D. Margala and P. Martini and P. McDonald and G. E. Medina and L. Medina-Varela and A. Meisner and J. Mena-Fernández and J. Meneses-Rizo and M. Mezcua and R. Miquel and P. Montero-Camacho and J. Moon and S. Moore and J. Moustakas and E. Mueller and J. Mundet and A. Muñoz-Gutiérrez and A. D. Myers and S. Nadathur and L. Napolitano and R. Neveux and J. A. Newman and J. Nie and G. Niz and P. Norberg and H. E. Noriega and E. Paillas and N. Palanque-Delabrouille and A. Palmese and P. Zhiwei and D. Parkinson and S. Penmetsa and W. J. Percival and A. Pérez-Fernández and I. Pérez-Ràfols and M. Pieri and C. Poppett and A. Porredon and F. Prada and R. Pucha and A. Raichoor and C. Ramírez-Pérez and S. Ramirez-Solano and M. Rashkovetskyi and C. Ravoux and A. Rocher and C. Rockosi and A. J. Ross and G. Rossi and R. Ruggeri and V. Ruhlmann-Kleider and C. G. Sabiu and K. Said and A. Saintonge and L. Samushia and E. Sanchez and C. Saulder and E. Schaan and E. F. Schlafly and D. Schlegel and D. Scholte and M. Schubnell and H. Seo and A. Shafieloo and R. Sharples and W. Sheu and J. Silber and F. Sinigaglia and M. Siudek and Z. Slepian and A. Smith and D. Sprayberry and L. Stephey and J. Suárez-Pérez and Z. Sun and T. Tan and G. Tarlé and R. Tojeiro and L. A. Ureña-López and R. Vaisakh and D. Valcin and F. Valdes and M. Valluri and M. Vargas-Magaña and A. Variu and L. Verde and M. Walther and B. Wang and M. S. Wang and B. A. Weaver and N. Weaverdyck and R. H. Wechsler and M. White and Y. Xie and J. Yang and C. Yèche and J. Yu and S. Yuan and H. Zhang and Z. Zhang and C. Zhao and Z. Zheng and R. Zhou and Z. Zhou and H. Zou and S. Zou and Y. Zu},
journal= {arXiv preprint arXiv:2306.06307},
year = {2024}
}
Comments
42 pages, 18 figures, accepted by AJ