Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 안덕근 | * |
dc.date.accessioned | 2023-04-14T16:30:06Z | - |
dc.date.available | 2023-04-14T16:30:06Z | - |
dc.date.issued | 2023 | * |
dc.identifier.issn | 0004-637X | * |
dc.identifier.other | OAK-33227 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/264790 | - |
dc.description.abstract | We present a chemodynamical analysis of 11,562 metal-rich, high-eccentricity halo-like main-sequence stars, which have been referred to as the Splash or Splashed Disk, selected from the Sloan Digital Sky Survey and Large Sky Area Multi-Object Fiber Spectroscopic Telescope. When divided into two groups, a low-[α/Fe] population (LAP) and a high-[α/Fe] population (HAP), based on kinematics and chemistry, we find that they exhibit very distinct properties, indicative of different origins. From a detailed analysis of their orbital inclinations, we suggest that the HAP arises from a large fraction (∼90%) of heated disk stars and a small fraction (∼10%) of in situ stars from a starburst population, likely induced by interaction of the Milky Way with the Gaia-Sausage/Enceladus (GSE) or another early merger. The LAP comprises about half accreted stars from the GSE and half formed by the GSE-induced starburst. Our findings further imply that the Splash stars in our sample originated from at least three different mechanisms: accretion, disk heating, and a merger-induced starburst. © 2023. The Author(s). Published by the American Astronomical Society. | * |
dc.language | English | * |
dc.publisher | Institute of Physics | * |
dc.title | Chemodynamical Analysis of Metal-rich High-eccentricity Stars in the Milky Way's Disk | * |
dc.type | Article | * |
dc.relation.issue | 1 | * |
dc.relation.volume | 945 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | Astrophysical Journal | * |
dc.identifier.doi | 10.3847/1538-4357/acb6f5 | * |
dc.identifier.wosid | WOS:000954597400001 | * |
dc.identifier.scopusid | 2-s2.0-85150807171 | * |
dc.author.google | Lee A. | * |
dc.author.google | Lee Y.S. | * |
dc.author.google | Kim Y.K. | * |
dc.author.google | Beers T.C. | * |
dc.author.google | An D. | * |
dc.contributor.scopusid | 안덕근(8661118800) | * |
dc.date.modifydate | 20240130115827 | * |