Tracing Chemical Evolution Over The Extent Of The Milky Way's Disk With Apogee Red Clump Stars
| Autor: | Annie C. Robin, Jian Ge, Steven R. Majewski, Howard Brewington, Kaike Pan, Peter M. Frinchaboy, Matthew Shetrone, Moses Marchante, David L. Nidever, Jonathan C. Bird, Ivan Minchev, Cristina Chiappini, Jo Bovy, Dmitry Bizyaev, Jon A. Holtzman, John C. Wilson, Elena Malanushenko, Karen Kinemuchi, Diane Feuillet, Brett H. Andrews, Donald P. Schneider, Audrey Simmons, Katia Cunha, Hans-Walter Rix, Timothy C. Beers, Gail Zasowski, Viktor Malanushenko, Verne V. Smith, Olga Zamora, Jennifer A. Johnson, Garrett Ebelke, Jennifer Sobeck, Robert W. O'Connell, D. A. García-Hernández, Carlos Allende Prieto, Szabolcs Mészáros, Ana G. Pérez, Michael F. Skrutskie, Ricardo P. Schiavon, David H. Weinberg, Friedrich Anders, Daniel Oravetz, Michael R. Hayden |
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| Přispěvatelé: | Univers, Transport, Interfaces, Nanostructures, Atmosphère et environnement, Molécules (UMR 6213) (UTINAM), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC)-Université Bourgogne Franche-Comté [COMUE] (UBFC) |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
Metallicity
Milky Way FOS: Physical sciences Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Galaxy: disk surveys Galaxy formation and evolution Astrophysics::Solar and Stellar Astrophysics Stellar evolution Red clump Galaxy: structure Astrophysics::Galaxy Astrophysics Physics Galaxy: evolution Galaxy: stellar content Astronomy and Astrophysics Astrophysics - Astrophysics of Galaxies Abundance of the chemical elements Galaxy Stars 13. Climate action Space and Planetary Science Astrophysics of Galaxies (astro-ph.GA) Galaxy: abundances [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] |
| Zdroj: | The Astrophysical Journal The Astrophysical Journal, American Astronomical Society, 2014, 796, 1, pp.38. ⟨10.1088/0004-637X/796/1/38⟩ |
| ISSN: | 0004-637X 1538-4357 |
| DOI: | 10.1088/0004-637X/796/1/38⟩ |
| Popis: | We employ the first two years of data from the near-infrared, high-resolution SDSS-III/APOGEE spectroscopic survey to investigate the distribution of metallicity and alpha-element abundances of stars over a large part of the Milky Way disk. Using a sample of ~10,000 kinematically-unbiased red-clump stars with ~5% distance accuracy as tracers, the [alpha/Fe] vs. [Fe/H] distribution of this sample exhibits a bimodality in [alpha/Fe] at intermediate metallicities, -0.9 Comment: 18 pages, 17 figures. Accepted for publication in ApJ |
| Databáze: | OpenAIRE |
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