DESI legacy 成像巡天概述
天体物理仪器与方法
2019-04-17 v2
摘要
DESI Legacy 成像巡天是三个公共项目（暗能量相机 Legacy 巡天、北京-亚利桑那巡天和 Mayall z 波段 Legacy 巡天）的组合，将利用基特峰国家天文台和托洛洛山美洲际天文台的望远镜，在北半球可见的约 14000 平方度河外天区，以三个光学波段（g、r 和 z）联合成像。合并后的巡天足迹被银道面分割为两个连续区域。光学成像采用一种独特的策略，在观测期间动态调整曝光时间和指向选择，从而形成近乎均匀深度的巡天。除定标图像外，该项目还提供目录，采用基于概率推断的方法估计源的形状与亮度。该目录包含来自 grz 光学波段以及宽视场红外巡天探测器（WISE）卫星在其整个运行寿命期间观测到的四个中红外波段（3.4、4.6、12 和 22 微米）测光。项目计划每年两次公开数据发布。所有用于生成目录的软件也随数据一同发布。本文提供 Legacy 巡天项目的概述。
引用
@article{arxiv.1804.08657,
title = {Overview of the DESI Legacy Imaging Surveys},
author = {Arjun Dey and David J. Schlegel and Dustin Lang and Robert Blum and Kaylan Burleigh and Xiaohui Fan and Joseph R. Findlay and Doug Finkbeiner and David Herrera and Stephanie Juneau and Martin Landriau and Michael Levi and Ian McGreer and Aaron Meisner and Adam D. Myers and John Moustakas and Peter Nugent and Anna Patej and Edward F. Schlafly and Alistair R. Walker and Francisco Valdes and Benjamin A. Weaver and Christophe Yeche Hu Zou and Xu Zhou and Behzad Abareshi and T. M. C. Abbott and Bela Abolfathi and C. Aguilera and Shadab Alam and Lori Allen and A. Alvarez and James Annis and Behzad Ansarinejad and Marie Aubert and Jacqueline Beechert and Eric F. Bell and Segev Y. BenZvi and Florian Beutler and Richard M. Bielby and Adam S. Bolton and Cesar Briceno Elizabeth J. Buckley-Geer and Karen Butler and Annalisa Calamida and Raymond G. Carlberg and Paul Carter and Ricard Casas and Francisco J. Castander and Yumi Choi and Johan Comparat and Elena Cukanovaite and Timothee Delubac and Kaitlin DeVries and Sharmila Dey and Govinda Dhungana and Mark Dickinson and Zhejie Ding and John B. Donaldson and Yutong Duan and Christopher J. Duckworth and Sarah Eftekharzadeh and Daniel J. Eisenstein and Thomas Etourneau and Parker A. Fagrelius and Jay Farihi and Mike Fitzpatrick and Andreu Font-Ribera and Leah Fulmer and Boris T. Gansicke and Enrique Gaztanaga and Koshy George and David W. Gerdes and Satya Gontcho A Gontcho and Claudio Gorgoni and Gregory Green and Julien Guy and Diane Harmer and M. Hernandez and Klaus Honscheid and Lijuan and Huang and David James and Buell T. Jannuzi and Linhua Jiang and Richard Joyce and Armin Karcher and Sonia Karkar and Robert Kehoe and Jean-Paul Kneib and Andrea Kueter-Young and Ting-Wen Lan and Tod Lauer and Laurent Le Guillou and Auguste Le Van Suu and Jae Hyeon Lee and Michael Lesser and Laurence Perreault Levasseur and Ting S. Li and Justin L. Mann and Bob Marshall and C. E. Martinez-Vazquez and Paul Martini and Helion du Mas des Bourboux and Sean McManus and Tobias Gabriel Meier and Brice Menard and Nigel Metcalfe and Andrea Munoz-Gutierrez and Joan Najita and Kevin Napier and Gautham Narayan and Jeffrey A. Newman and Jundan Nie and Brian Nord and Dara J. Norman and Knut A. G. Olsen and Anthony Paat and Nathalie Palanque-Delabrouille and Xiyan Peng and Claire L. Poppett and Megan R. Poremba and Abhishek Prakash and David Rabinowitz and Anand Raichoor and Mehdi Rezaie and A. N. Robertson and Natalie A. Roe and Ashley J. Ross and Nicholas P. Ross and Gregory Rudnick and Sasha Safonova and Abhijit Saha and F. Javier Sanchez and Elodie Savary and Heidi Schweiker and Adam Scott and Hee-Jong Seo and Huanyuan Shan and David R. Silva and Zachary Slepian and Christian Soto and David Sprayberry and Ryan Staten and Coley M. Stillman and Robert J. Stupak and David L. Summers and Suk Sien Tie and H. Tirado and Mariana Vargas-Magana and A. Katherina Vivas and Risa H. Wechsler and Doug Williams and Jinyi Yang and Qian Yang and Tolga Yapici and Dennis Zaritsky and A. Zenteno and Kai Zhang and Tianmeng Zhang and Rongpu Zhou and Zhimin Zhou},
journal= {arXiv preprint arXiv:1804.08657},
year = {2019}
}
备注
47 pages, 18 figures; accepted for publication in the Astronomical Journal