@article{90647b694ccf45fa91bdce2fcb617418,
title = "Target Selection for the SDSS-IV APOGEE-2 Survey",
abstract = "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.",
keywords = "Galaxy: evolution, Galaxy: stellar content, stars: general, surveys",
author = "G. Zasowski and Cohen, {R. E.} and Chojnowski, {S. D.} and F. Santana and Oelkers, {R. J.} and B. Andrews and Beaton, {R. L.} and C. Bender and Bird, {J. C.} and J. Bovy and Carlberg, {J. K.} and K. Covey and K. Cunha and F. Dell'Agli and Fleming, {Scott W.} and Frinchaboy, {P. M.} and Garcia-Hern{\'a}ndez, {D. A.} and P. Harding and J. Holtzman and Johnson, {J. A.} and Kollmeier, {J. A.} and Majewski, {S. R.} and Sz M{\'e}sz{\'a}ros and J. Munn and Munoz, {R. R.} and Ness, {M. K.} and Nidever, {D. L.} and R. Poleski and C. Rom{\'a}n-Zniga and M. Shetrone and Simon, {J. D.} and Smith, {V. V.} and Sobeck, {J. S.} and Stringfellow, {G. S.} and L. Szigeti{\'a}ros and J. Tayar and N. Troup",
note = "Funding Information: G.Z.acknowledges support from the BarryM.Lasker Data Science Research Fellowship, sponsored by the Space Telescope Science Institute in Baltimore, MD, USA. R.E.C.acknowledges funding from Gemini-CONICYT for Project 32140007, C.B. acknowledges support from National Science Foundation (NSF) grant AST-1517592, and P.M.F.acknowledges support from NSF grants AST-1311835 and AST-1715662. D.A.G.H. was funded by the Ram{\'o}n y Cajal fellowship no. RYC-2013-14182, and D.A.G.H. and F.D. acknowledge support provided by the Spanish Ministry of Economy and Competitiveness (MINECO) under grant AYA-2014-58082-P. Sz.M. has been supported by the Premium Postdoctoral Research Program of the Hungarian Academy of Sciences and by the Hungarian NKFI grants K-119517 of the Hungarian National Research, Development and Innovation Office. We thank P.Stetson for access to optical photometry that improved the selection of globular cluster targets. Finally, we thank the anonymous referee for comments that improved the clarity of this paper. Funding Information: Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High-Performance Computing at the University of Utah. The SDSS website ishttp://www.sdss.org. Funding Information: This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This publication also makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration. Publisher Copyright: {\textcopyright} 2017. The American Astronomical Society. All rights reserved..",
year = "2017",
month = nov,
doi = "10.3847/1538-3881/aa8df9",
language = "English (US)",
volume = "154",
journal = "Astronomical Journal",
issn = "0004-6256",
publisher = "IOP Publishing Ltd.",
number = "5",
}