Final Targeting Strategy for the SDSS-IV APOGEE-2S Survey
Final Targeting Strategy for the SDSS-IV APOGEE-2S Survey
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DOI：
10.3847/1538-3881/ac2cbc
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发表时间：
2021-08
期刊：
影响因子：
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通讯作者：
F. Santana;R. Beaton;K. Covey;J. O’Connell;P. Longa-Peña;R. Cohen;J. G. Fern'andez-Trincado;
中科院分区：
文献类型：
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作者：
F. Santana;R. Beaton;K. Covey;J. O’Connell;P. Longa-Peña;R. Cohen;J. G. Fern'andez-Trincado;
远地点是一个高分辨率（R ~ 22000），近红外，多历元，银河系的光谱调查。第二代APOGEE项目，APOGEE-2，包括扩展到南半球的调查，称为APOGEE- 2s。这次扩展使远地点望远镜能够对银河系的所有主要区域进行全景测绘；特别是，通过在H波段工作，远地点望远镜有独特的能力探测银河系尘埃隐藏的内部区域，这些区域最好从南半球进入。在本文中，我们提出了APOGEE-2S的目标策略，并特别注意记录了对先前公布的原始计划的修改。解释了这些变化的动机，并评估了它们在实现预期科学目标方面的有效性。预计这将是最后一篇详细介绍APOGEE定位的论文，我们将在APOGEE- 2s项目结束前完成所有此类信息的核算；这包括几个主要的调查项目，致力于探索银河系的主要恒星群和区域，以及一个完整的项目清单，通过智利国家时间分配委员会和卡内基科学研究所的观测时间分配，为远地点数据库做出贡献。这项工作与Beaton等人（2021）的一篇配套文章一起发表，该文章介绍了APOGEE-2在北半球采用的最终目标选择策略。
APOGEE is a high-resolution (R ∼ 22,000), near-infrared, multi-epoch, spectroscopic survey of the Milky Way. The second generation of the APOGEE project, APOGEE-2, includes an expansion of the survey to the Southern Hemisphere called APOGEE-2S. This expansion enabled APOGEE to perform a fully panoramic mapping of all of the main regions of the Milky Way; in particular, by operating in the H band, APOGEE is uniquely able to probe the dust-hidden inner regions of the Milky Way that are best accessed from the Southern Hemisphere. In this paper we present the targeting strategy of APOGEE-2S, with special attention to documenting modifications to the original, previously published plan. The motivation for these changes is explained as well as an assessment of their effectiveness in achieving their intended scientific objective. In anticipation of this being the last paper detailing APOGEE targeting, we present an accounting of all such information complete through the end of the APOGEE-2S project; this includes several main survey programs dedicated to exploration of major stellar populations and regions of the Milky Way, as well as a full list of programs contributing to the APOGEE database through allocations of observing time by the Chilean National Time Allocation Committee and the Carnegie Institution for Science. This work was presented along with a companion article, Beaton et al. (2021), presenting the final target selection strategy adopted for APOGEE-2 in the Northern Hemisphere.