Full metadata record
DC Field | Value | Language |
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dc.contributor.author | 안덕근 | * |
dc.date.accessioned | 2021-06-07T16:30:57Z | - |
dc.date.available | 2021-06-07T16:30:57Z | - |
dc.date.issued | 2021 | * |
dc.identifier.issn | 0004-637X | * |
dc.identifier.other | OAK-29450 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/257545 | - |
dc.description.abstract | We report photometric estimates of effective temperature, T eff, metallicity, [Fe/H], carbonicity, [C/Fe], and absolute carbon abundances, A(C), for over 700,000 stars from the Southern Photometric Local Universe Survey (S-PLUS) Data Release 2, covering a substantial fraction of the equatorial Sloan Digital Sky Survey Stripe 82. We present an analysis for two stellar populations: (1) halo main-sequence turnoff stars and (2) K-dwarf stars of mass 0.58 < M/M o˙ < 0.75 in the Solar Neighborhood. Application of the Stellar Photometric Index Network Explorer (SPHINX) to the mixed-bandwidth (narrow- plus wide-band) filter photometry from S-PLUS produces robust estimates of the metallicities and carbon abundances in stellar atmospheres over a wide range of temperatures, 4250 < T eff(K) < 7000. The use of multiple narrow-band S-PLUS filters enables SPHINX to achieve substantially lower levels of "catastrophic failures"(i.e., large offsets in metallicity estimates relative to spectroscopic determinations) than previous efforts using a single metallicity-sensitive narrow-band filter. We constrain the exponential slope of the Milky Way's K-dwarf halo metallicity distribution function (MDF), λ 10,[Fe/H] = 0.85 ± 0.21, over the metallicity range -2.5 < [Fe/H] < -1.0; the MDF of our local-volume K-dwarf sample is well-represented by a gamma distribution with parameters α = 2.8 and β = 4.2. S-PLUS photometry obtains absolute carbon abundances with a precision of ∼0.35 dex for stars with T eff < 6500 K. We identify 364 candidate carbon-enhanced metal-poor stars, obtain assignments of these stars into the Yoon-Beers morphological groups in the A(C)-[Fe/H] space, and we derive the CEMP frequencies. © 2021. The American Astronomical Society. All rights reserved.. | * |
dc.language | English | * |
dc.publisher | IOP Publishing Ltd | * |
dc.title | The Photometric Metallicity and Carbon Distributions of the Milky Way's Halo and Solar Neighborhood from S-PLUS Observations of SDSS Stripe 82 | * |
dc.type | Article | * |
dc.relation.issue | 2 | * |
dc.relation.volume | 912 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | Astrophysical Journal | * |
dc.identifier.doi | 10.3847/1538-4357/abee7e | * |
dc.identifier.wosid | WOS:000651769400001 | * |
dc.identifier.scopusid | 2-s2.0-85106868863 | * |
dc.author.google | Whitten D.D. | * |
dc.author.google | Placco V.M. | * |
dc.author.google | Beers T.C. | * |
dc.author.google | An D. | * |
dc.author.google | Lee Y.S. | * |
dc.author.google | Almeida-Fernandes F. | * |
dc.author.google | Herpich F.R. | * |
dc.author.google | Daflon S. | * |
dc.author.google | Barbosa C.E. | * |
dc.author.google | Perottoni H.D. | * |
dc.author.google | Rossi S. | * |
dc.author.google | Tissera P.B. | * |
dc.author.google | Yoon J. | * |
dc.author.google | Youakim K. | * |
dc.author.google | Schoenell W. | * |
dc.author.google | Ribeiro T. | * |
dc.author.google | Kanaan A. | * |
dc.contributor.scopusid | 안덕근(8661118800) | * |
dc.date.modifydate | 20240130115827 | * |