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  • Schonhut-Stasik, JessicaVanderbilt Univ, Dept Phys & Astron, 6301 Stevenson Ctr Lane, Nashville, TN 37235 USA. (author)

The APO-K2 Catalog. I. ∼7500 Red Giants with Fundamental Stellar Parameters from APOGEE DR17 Spectroscopy and K2-GAP Asteroseismology

  • Article/chapterEnglish2024

Publisher, publication year, extent ...

  • Institute of Physics Publishing (IOPP),2024
  • electronicrdacarrier

Numbers

  • LIBRIS-ID:oai:DiVA.org:mau-65482
  • https://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-65482URI
  • https://doi.org/10.3847/1538-3881/ad0b13DOI

Supplementary language notes

  • Language:English
  • Summary in:English

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  • Subject category:ref swepub-contenttype
  • Subject category:art swepub-publicationtype

Notes

  • We present a catalog of fundamental stellar properties for similar to 7500 evolved stars, including stellar radii and masses, determined from the combination of spectroscopic observations from the Apache Point Observatory Galactic Evolution Experiment, part of the Sloan Digital Sky Survey IV, and asteroseismology from K2. The resulting APO-K2 catalog provides spectroscopically derived temperatures and metallicities, asteroseismic global parameters, evolutionary states, and asteroseismically derived masses and radii. Additionally, we include kinematic information from Gaia. We investigate the multidimensional space of abundance, stellar mass, and velocity with an eye toward applications in Galactic archaeology. The APO-K2 sample has a large population of low-metallicity stars (similar to 288 with [M/H] <= -1), and their asteroseismic masses are larger than astrophysical estimates. We argue that this may reflect offsets in the adopted fundamental temperature scale for metal-poor stars rather than metallicity-dependent issues with interpreting asteroseismic data. We characterize the kinematic properties of the population as a function of alpha enhancement and position in the disk and identify those stars in the sample that are candidate components of the Gaia-Enceladus merger. Importantly, we characterize the selection function for the APO-K2 sample as a function of metallicity, radius, mass, nu max , color, and magnitude referencing Galactic simulations and target selection criteria to enable robust statistical inferences with the catalog.

Subject headings and genre

Added entries (persons, corporate bodies, meetings, titles ...)

  • Zinn, Joel C.Amer Museum Nat Hist, Dept Astrophys, Cent Pk West,79th St, New York, NY 10024 USA.;Calif State Univ, Dept Phys & Astron, Long Beach, CA 90840 USA. (author)
  • Stassun, Keivan G.Vanderbilt Univ, Dept Phys & Astron, 6301 Stevenson Ctr Lane, Nashville, TN 37235 USA. (author)
  • Pinsonneault, MarcOhio State Univ, Dept Astron, McPherson Lab, 140 West 18th Ave, Columbus, OH 43210 USA. (author)
  • Johnson, Jennifer A.Ohio State Univ, Dept Astron, McPherson Lab, 140 West 18th Ave, Columbus, OH 43210 USA.;Ctr Cosmol & AstroParticle Phys, Phys Res Bldg,190 West Woodruff Ave, Columbus, OH 43210 USA. (author)
  • Warfield, Jack T.Univ Virginia, Dept Astron, 530 McCormick Rd, Charlottesville, VA 22904 USA. (author)
  • Stello, DennisUniv New South Wales, Sch Phys, Sydney, NSW 2052, Australia.;Univ Sydney, Sch Phys, Sydney Inst Astron SIfA, Sydney, NSW 2006, Australia.;ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Parkville, Vic, Australia.;Aarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, Ny Munkegade 120, DK-8000 Aarhus C, Denmark. (author)
  • Elsworth, YvonneAarhus Univ, Dept Phys & Astron, Stellar Astrophys Ctr, Ny Munkegade 120, DK-8000 Aarhus C, Denmark.;Univ Birmingham, Sch Phys & Astron, Birmingham B15 2TT, W Midlands, England. (author)
  • Garcia, Rafael A.Univ Paris Saclay, Univ Paris Cite, CEA, CNRS,AIM, F-91191 Gif Sur Yvette, France. (author)
  • Mathur, SavitaInst Astrofis Canarias IAC, E-38205 San Cristobal la Laguna, Tenerife, Spain.;Univ La Laguna, Dept Astrofis, E-38206 San Cristobal la Laguna, Tenerife, Spain. (author)
  • Mosser, BenoitUniv Paris, Sorbonne Univ, CNRS, LESIA,Observ Paris,Univ PSL, F-92195 Meudon, France. (author)
  • Hon, MarcUniv Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA. (author)
  • Tayar, JamieUniv Florida, Dept Astron, Bryant Space Sci Ctr, Stadium Rd, Gainesville, FL 32611 USA. (author)
  • Stringfellow, Guy S.Univ Colorado, Ctr Astrophys & Space Astron, 389 UCB, Boulder, CO 80309 USA. (author)
  • Beaton, Rachael L.Space Telescope Sci Inst, Baltimore, MD 21218 USA.;Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA. (author)
  • Jönsson, HenrikMalmö universitet,Institutionen för materialvetenskap och tillämpad matematik (MTM)(Swepub:mau)ak0675 (author)
  • Minniti, DanteUniv Fed Santa Catarina, Dept Fis, BR-88040900 Florianopolis, SC, Brazil.;Univ Andres Bello, Inst Astrofis, Fac Ciencias Exactas, Ave Fernandez Concha 700, Santiago, Chile.;Vatican Observ, I-V00120 Vatican City, Vatican. (author)
  • Vanderbilt Univ, Dept Phys & Astron, 6301 Stevenson Ctr Lane, Nashville, TN 37235 USA.Amer Museum Nat Hist, Dept Astrophys, Cent Pk West,79th St, New York, NY 10024 USA.;Calif State Univ, Dept Phys & Astron, Long Beach, CA 90840 USA. (creator_code:org_t)

Related titles

  • In:Astronomical Journal: Institute of Physics Publishing (IOPP)167:20004-62561538-3881

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