Final Targeting Strategy for the SDSS-IV APOGEE-2S Survey

Abstract 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 fu...

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Bibliographic Details
Published in:	The Astronomical journal 2021-12, Vol.162 (6), p.303
Main Authors:	Santana, Felipe A., Beaton, Rachael L., Covey, Kevin R., O’Connell, Julia E., Longa-Peña, Penélope, Cohen, Roger, Fernández-Trincado, José G., Hayes, Christian R., Zasowski, Gail, Sobeck, Jennifer S., Majewski, Steven R., Chojnowski, S. D., De Lee, Nathan, Oelkers, Ryan J., Stringfellow, Guy S., Almeida, Andrés, Anguiano, Borja, Donor, John, Frinchaboy, Peter M., Hasselquist, Sten, Johnson, Jennifer A., Kollmeier, Juna A., Nidever, David L., Price-Whelan, Adrian M., Rojas-Arriagada, Alvaro, Schultheis, Mathias, Shetrone, Matthew, Simon, Joshua D., Aerts, Conny, Borissova, Jura, Drout, Maria R., Geisler, Doug, Law, C. Y., Medina, Nicolas, Minniti, Dante, Monachesi, Antonela, Muñoz, Ricardo R., Poleski, Radosław, Roman-Lopes, Alexandre, Schlaufman, Kevin C., Stutz, Amelia M., Teske, Johanna, Tkachenko, Andrew, Van Saders, Jennifer L., Weinberger, Alycia J., Zoccali, Manuela
Format:	Article
Language:	eng
Subjects:	Allocations Astronomy ASTRONOMY AND ASTROPHYSICS Astronomy databases Galaxy abundances Galaxy dynamics Galaxy evolution Galaxy formation Galaxy kinematics Galaxy stellar content Galaxy structure Milky Way Milky Way Galaxy Near infrared radiation Northern Hemisphere Polls & surveys Southern Hemisphere Stellar populations Surveys
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Summary:	Abstract 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.
ISSN:	0004-6256 1538-3881 1538-3881