暗能量光谱仪科学方案的验证
宇宙学与河外天体物理
2024-01-17 v3
摘要
暗能量光谱仪（DESI）被设计用于在五年内开展覆盖 14,000 平方度的巡天，通过精确测量重子声学振荡（BAO）来约束宇宙膨胀历史。DESI 的科学方案在全面运行前的五个月巡天验证（SV）活动中进行了评估。该方案对恒星（MWS）、亮星系（BGS）、亮红星系（LRG）、发射线星系（ELG）和类星体目标类的每一类都产生了数万个天体的深场光谱。这些 SV 光谱被用于优化红移分布、表征曝光时间、确定定标流程，并评估五年方案中的观测开销。在本文中，我们呈现由此类研究得出的最终目标选择算法、红移分布以及预期的宇宙学约束。我们还呈现了在巡天验证结束时使用最终目标选择算法、以主巡天典型深度的曝光所开展的覆盖 140 平方度的“百分之一巡天”。巡天验证表明，DESI 将能够完成完整的 14,000 平方度方案，获得来自 MWS、BGS、LRG、ELG 和类星体方案的光谱确认目标，其总样本量分别为 720 万、1380 万、746 万、1570 万和 287 万。这些样本将允许探索银河系晕、全尺度成团性，以及在红移区间 内统计精度为 0.28%、在红移区间 内为 0.39%、在红移区间 内为 0.46% 的 BAO 测量。
引用
@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}
}
备注
42 pages, 18 figures, accepted by AJ