Target Selection for the SDSS-IV APOGEE-2 Survey

Target Selection for the SDSS-IV APOGEE-2 Survey
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DOI:
10.3847/1538-3881/aa8df9
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发表时间:
2017-08
期刊:
The Astronomical Journal
影响因子:
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通讯作者:
G. Zasowski;R. Cohen;S. Chojnowski;F. Santana;R. Oelkers;B. Andrews;R. Beaton;C. Bender;J. B
G. Zasowski;R. Cohen;S. Chojnowski;F. Santana;R. Oelkers;B. Andrews;R. Beaton;C. Bender;J. B
中科院分区:
其他
文献类型:
--
作者:
G. Zasowski;R. Cohen;S. Chojnowski;F. Santana;R. Oelkers;B. Andrews;R. Beaton;C. Bender;J. B

文献摘要

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APOGEE-2 是一项高分辨率近红外光谱巡天项目,观测整个天空中的 ∼3 × 105 颗恒星。它是 APOGEE 的后续版本,并且是斯隆数字巡天 IV (SDSS-IV) 的一部分。 APOGEE-2 正在扩展 APOGEE 的目标,即使用 (1) 一组增强的目标类型和 (2) 智利拉斯坎帕纳斯天文台的第二台摄谱仪解决恒星天体物理学、恒星种群和银河化学动力学演化的关键问题。 APOGEE-2 的目标是红巨星分支和红团簇星、天琴座 RR、低质量矮星、年轻恒星以及来自两个半球的整个天空中的许多其他银河系和本星系群源。在本文中,我们描述了 APOGEE-2 观测设计、目标选择目录和算法,以及 SDSS 数据发布中包含的目标相关文档。
APOGEE-2 is a high-resolution, near-infrared spectroscopic survey observing ∼3 × 105 stars across the entire sky. It is the successor to APOGEE and is part of the Sloan Digital Sky Survey IV (SDSS-IV). APOGEE-2 is expanding on APOGEE’s goals of addressing critical questions of stellar astrophysics, stellar populations, and Galactic chemodynamical evolution using (1) an enhanced set of target types and (2) a second spectrograph at Las Campanas Observatory in Chile. APOGEE-2 is targeting red giant branch and red clump stars, RR Lyrae, low-mass dwarf stars, young stellar objects, and numerous other Milky Way and Local Group sources across the entire sky from both hemispheres. In this paper, we describe the APOGEE-2 observational design, target selection catalogs and algorithms, and the targeting-related documentation included in the SDSS data releases.