ABYSS. I. Targeting Strategy for the APOGEE and BOSS Young Star Survey in SDSS-V

Marina Kounkel, Eleonora Zari, Kevin Covey, Andrew Tkachenko, Carlos Román Zúñiga, Keivan Stassun, Amelia M. Stutz, Guy Stringfellow, Alexandre Roman-Lopes, Jesús Hernández, Karla Peña Ramírez, Amelia Bayo, Jinyoung Serena Kim, Lyra Cao, Scott J. Wolk, Juna Kollmeier, Ricardo López-Valdivia, Bárbara Rojas-Ayala

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3 Scopus citations


The fifth iteration of the Sloan Digital Sky Survey is set to obtain optical and near-infrared spectra of ∼5 million stars of all ages and masses throughout the Milky Way. As a part of these efforts, APOGEE and BOSS Young Star Survey (ABYSS) will observe ∼105 stars with ages <30 Myr that have been selected using a set of homogeneous selection functions that make use of different tracers of youth. The ABYSS targeting strategy we describe in this paper is aimed to provide the largest spectroscopic census of young stars to date. It consists of eight different types of selection criteria that take the position on the H-R diagram, infrared excess, variability, as well as the position in phase space in consideration. The resulting catalog of ∼200,000 sources (of which a half are expected to be observed) provides representative coverage of the young Galaxy, including both nearby diffuse associations as well as more distant massive complexes, reaching toward the inner Galaxy and the Galactic center.

Original languageEnglish (US)
Article number10
JournalAstrophysical Journal, Supplement Series
Issue number1
StatePublished - May 1 2023

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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