暗能量光谱仪的目标选择流水线
天体物理仪器与方法
2023-01-18 v3 宇宙学与河外天体物理
星系天体物理
摘要
2021年5月，暗能量光谱仪（Dark Energy Spectroscopic Instrument, DESI）开始了为期5年、约5000万河外与银河系总目标的巡天。DESI主要暗时间目标为发射线星系（ELGs）、亮红星系（LRGs）与类星体（QSOs）。在亮时间，DESI将聚焦于称为亮星系巡天（BGS）与银河系巡天（MWS）的两项巡天。DESI还观测用于定制科学目标的一批“次要”目标。本文概述用于处理DESI观测目标的公开流水线（desitarget）。要点包括不同DESI巡天定靶阶段、用于定义唯一目标的目标ID（TARGETID）、指示特定目标类型的位掩码、DESI定靶文件的数据模型与结构，以及访问使用desitarget代码库的示例。本文还将描述“辅助”DESI目标类，如标准星、天空位置以及模拟DESI目标角选择函数的随机星表。DESI目标选择流水线复杂且庞大；本文试图总结理解并处理DESI定靶数据所需的最关键信息。
引用
@article{arxiv.2208.08518,
title = {The Target-selection Pipeline for the Dark Energy Spectroscopic Instrument},
author = {Adam D. Myers and John Moustakas and Stephen Bailey and Benjamin A. Weaver and Andrew P. Cooper and Jaime E. Forero-Romero and Bela Abolfathi and David M. Alexander and David Brooks and Edmond Chaussidon and Chia-Hsun Chuang and Kyle Dawson and Arjun Dey and Biprateep Dey and Govinda Dhungana and Peter Doel and Kevin Fanning and Enrique Gaztañaga and Satya Gontcho A Gontcho and Alma X. Gonzalez-Morales and ChangHoon Hahn and Hiram K. Herrera-Alcantar and Klaus Honscheid and Mustapha Ishak and Tanveer Karim and David Kirkby and Theodore Kisner and Sergey E. Koposov and Anthony Kremin and Ting-Wen Lan and Martin Landriau and Dustin Lang and Michael E. Levi and Christophe Magneville and Lucas Napolitano and Paul Martini and Aaron Meisner and Jeffrey A. Newman and Nathalie Palanque-Delabrouille and Will Percival and Claire Poppett and Francisco Prada and Anand Raichoor and Ashley J. Ross and Edward F. Schlafly and David Schlegel and Michael Schubnell and Ting Tan and Gregory Tarle and Michael J. Wilson and Christophe Yèche and Rongpu Zhou and Zhimin Zhou and Hu Zou},
journal= {arXiv preprint arXiv:2208.08518},
year = {2023}
}
备注
AJ, accepted, 27 pages, 4 figures, 10 tables, one of a suite of 8 papers detailing targeting for DESI. Minor textual updates to better match the final, accepted version. Also added two missing co-authors