DESI 亮星系巡天（BGS）的初步目标选择
星系天体物理
2020-10-23 v1
摘要
暗能量光谱仪（DESI）将执行一项近星等限制的低温星系巡天（，中位红移 ）。该亮星系巡天（BGS）的成团性分析将给出迄今为止低红移处重子声学振荡和红移空间畸变最精确的测量。DESI BGS 将包含两类目标：（i）BRIGHT（~mag），以及（ii）FAINT（~mag）。本文给出 BGS 中用于减少伪目标数量的星-星系分离，以及不同测光与几何掩模的总结。该选择 resulting in BRIGHT 选择总密度约 个对象/deg，FAINT 选择约 个对象/deg。BGS 选择的完整表征可见 Ruiz-Macias 等人（2020）。
引用
@article{arxiv.2010.11283,
title = {Preliminary Target Selection for the DESI Bright Galaxy Survey (BGS)},
author = {Omar Ruiz-Macias and Pauline Zarrouk and Shaun Cole and Peder Norberg and Carlton Baugh and David Brooks and Arjun Dey and Yutong Duan and Sarah Eftekharzadeh and Daniel J. Eisenstein and Jaime E. Forero-Romero and Enrique Gaztañaga and ChangHoon Hahn and Robert Kehoe and Martin Landriau and Dustin Lang and Michael E. Levi and John Lucey and Aaron M. Meisner and John Moustakas and Adam D. Myers and Nathalie Palanque-Delabrouille and Claire Poppett and Francisco Prada and Anand Raichoor and David J. Schlegel and Michael Schubnell and Gregory Tarlé and David H. Weinberg and M. J. Wilson and Christophe Yèche},
journal= {arXiv preprint arXiv:2010.11283},
year = {2020}
}
备注
3 pages, 1 figure