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Chemical Cartograph...
Chemical Cartography with APOGEE : Multi-element Abundance Ratios
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- Weinberg, David H. (författare)
- Ohio State Univ, Dept Astron, 174 W 18Th Ave, Columbus, OH 43210 USA.;Ohio State Univ, CCAPP, Columbus, OH 43210 USA.,Ohio State University
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- Holtzman, Jon A. (författare)
- New Mexico State Univ, Las Cruces, NM 88003 USA.,New Mexico State University
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- Hasselquist, Sten (författare)
- New Mexico State Univ, Las Cruces, NM 88003 USA.,New Mexico State University
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visa fler...
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- Bird, Jonathan C. (författare)
- Vanderbilt Univ, Nashville, TN 37240 USA.,Vanderbilt University
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- Johnson, Jennifer A. (författare)
- Ohio State Univ, Dept Astron, 174 W 18Th Ave, Columbus, OH 43210 USA.;Ohio State Univ, CCAPP, Columbus, OH 43210 USA.,Ohio State University
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- Shetrone, Matthew (författare)
- Univ Texas Austin, McDonald Observ, Fort Davis, TX 79734 USA.,University of Texas at Austin
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- Sobeck, Jennifer (författare)
- Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA.,University of Washington
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- Allende Prieto, Carlos (författare)
- IAC, E-38205 Tenerife, Spain.;Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain.,University of La Laguna (ULL),Instituto de Astrofísica de Canarias
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- Bizyaev, Dmitry (författare)
- Apache Point Observ, POB 59, Sunspot, NM 88349 USA.,Apache Point Observatory
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- Carrera, Ricardo (författare)
- Astron Observ Padova, Natl Inst Astrophys, Vicolo Osservatorio 5, I-35122 Padua, Italy.,INAF - Osservatorio Astronomico di Padova
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- Cohen, Roger E. (författare)
- Univ Concepcion, Dept Astron, Casilla 160-C, Concepcion, Chile.;Space Telescope Sci Inst, 3700 San Martin Dr, Baltimore, MD 21210 USA.,University of Concepción,Space Telescope Science Institute
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- Cunha, Katia (författare)
- Observ Nacl, Sao Cristovao, RJ, Brazil.;Univ Arizona, Tucson, AZ 85719 USA.,University of Arizona,National Observatory Brazil
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- Ebelke, Garrett (författare)
- Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA.,University of Virginia
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- Fernandez-Trincado, J. G. (författare)
- Univ Concepcion, Dept Astron, Casilla 160-C, Concepcion, Chile.;Univ Atacama, Inst Astron & Ciencias Planetarias, Copayapu 485, Copiapo, Chile.;Univ Bourgogne Franche Comte, Inst Utinam, CNRS UMR 6213, OSU THETA Franche Comte,Observ Besancon, BP 1615, F-25010 Besancon, France.,University of Concepción,University of Burgundy - Franche-Comté,University of Atacama
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- Garcia-Hernandez, D. A. (författare)
- IAC, E-38205 Tenerife, Spain.;Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain.,Instituto de Astrofísica de Canarias,University of La Laguna (ULL)
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- Hayes, Christian R. (författare)
- Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA.,University of Virginia
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- Jönsson, Henrik (författare)
- Lund University,Lunds universitet,Astronomi - Genomgår omorganisation,Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation,Naturvetenskapliga fakulteten,Lund Observatory - Undergoing reorganization,Department of Astronomy and Theoretical Physics - Undergoing reorganization,Faculty of Science
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- Lane, Richard R. (författare)
- Pontificia Catolica Chile, Inst Astrofis, Av Vicuna Mackenna 4860, Santiago 7820436, Chile.;Millennium Inst Astrophys, Av Vicuna Mackenna 4860, Santiago 7820436, Chile.,Pontifical Catholic University of Chile,Millennium Institute for Astrophysics
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- Majewski, Steven R. (författare)
- Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA.,University of Virginia
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- Malanushenko, Viktor (författare)
- Apache Point Observ, POB 59, Sunspot, NM 88349 USA.,Apache Point Observatory
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- Meszaros, Szabolcs (författare)
- Eotvos Lorand Univ, Gothard Astrophys Observ, Szombathely, Hungary.;Hungarian Acad Sci, Budapest, Hungary.,Eötvös Loránd University
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- Nidever, David L. (författare)
- Montana State Univ, Dept Phys, POB 173840, Bozeman, MT 59717 USA.;Natl Opt Astron Observ, 950 North Cherry Ave, Tucson, AZ 85719 USA.,National Optical Astronomy Observatory,Montana State University
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- Nitschelm, Christian (författare)
- Univ Antofagasta, Ctr Astron CITEVA, Ave Angamos 601, Antofagasta 1270300, Chile.,University of Antofagasta
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- Pan, Kaike (författare)
- Apache Point Observ, POB 59, Sunspot, NM 88349 USA.,Apache Point Observatory
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- Rix, Hans-Walter (författare)
- Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.,Max Planck Institute for Astronomy
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- Rybizki, Jan (författare)
- Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany.,Max Planck Institute for Astronomy
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- Schiavon, Ricardo P. (författare)
- Liverpool John Moores Univ, Astrophys Res Inst, Liverpool L3 5RF, Merseyside, England.,Liverpool John Moores University
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- Schneider, Donald P. (författare)
- Penn State Univ, Dept Astron & Astrophys, 525 Davey Lab, University Pk, PA 16802 USA.;Penn State Univ, Inst Gravitat & Cosmos, University Pk, PA 16802 USA.,Pennsylvania State University
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- Wilso, John C. (författare)
- Univ Virginia, Dept Astron, Charlottesville, VA 22904 USA.,University of Virginia
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- Zamora, Olga (författare)
- IAC, E-38205 Tenerife, Spain.;Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain.,University of La Laguna (ULL),Instituto de Astrofísica de Canarias
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Ohio State Univ, Dept Astron, 174 W 18Th Ave, Columbus, OH 43210 USA;Ohio State Univ, CCAPP, Columbus, OH 43210 USA. Ohio State University (creator_code:org_t)
- 2019-03-27
- 2019
- Engelska.
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Ingår i: Astrophysical Journal. - : Institute of Physics Publishing (IOPP). - 0004-637X .- 1538-4357. ; 874:1
- Relaterad länk:
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https://doi.org/10.3...
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https://repository.a...
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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https://lup.lub.lu.s...
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Abstract
Ämnesord
Stäng
- We map the trends of elemental abundance ratios across the Galactic disk, spanning R = 3-15 kpc and midplane distance vertical bar Z vertical bar = 0-2 kpc, for 15 elements in a sample of 20,485 stars measured by the SDSS/APOGEE survey (O, Na, Mg, Al, Si, P, S, K, Ca, V, Cr, Mn, Fe, Co, Ni). Adopting Mg rather than Fe as our reference element, and separating stars into two populations based on [Fe/Mg], we find that the median trends of [X/Mg] versus [Mg/H] in each population are nearly independent of location in the Galaxy. The full multi-element cartography can be summarized by combining these nearly universal median sequences with our measured metallicity distribution functions and the relative proportions of the low-[Fe/Mg] (high-alpha) and high-[Fe/Mg] (low-alpha) populations, which depend strongly on R and vertical bar Z vertical bar. We interpret the median sequences with a semi-empirical "two-process" model that describes both the ratio of core collapse and Type Ia supernova (SN Ia) contributions to each element and the metallicity dependence of the supernova yields. These observationally inferred trends can provide strong tests of supernova nucleosynthesis calculations. Our results lead to a relatively simple picture of abundance ratio variations in the Milky Way, in which the trends at any location can be described as the sum of two components with relative contributions that change systematically and smoothly across the Galaxy. Deviations from this picture and future extensions to other elements can provide further insights into the physics of stellar nucleosynthesis and unusual events in the Galaxy's history.
Ämnesord
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Nyckelord
- Galaxy: abundances
- Galaxy: disk
- nuclear reactions
- nucleosynthesis
- abundances
- stars: abundances
- Galaxy: abundances
- Galaxy: disk
- nuclear reactions, nucleosynthesis, abundances
- stars: abundances
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Weinberg, David ...
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Holtzman, Jon A.
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Hasselquist, Ste ...
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Bird, Jonathan C ...
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Johnson, Jennife ...
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Shetrone, Matthe ...
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visa fler...
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Sobeck, Jennifer
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Allende Prieto, ...
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Bizyaev, Dmitry
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Carrera, Ricardo
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Cohen, Roger E.
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Cunha, Katia
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Ebelke, Garrett
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Fernandez-Trinca ...
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Garcia-Hernandez ...
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Hayes, Christian ...
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Jönsson, Henrik
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Lane, Richard R.
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Majewski, Steven ...
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Malanushenko, Vi ...
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Meszaros, Szabol ...
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Nidever, David L ...
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Nitschelm, Chris ...
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Pan, Kaike
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Rix, Hans-Walter
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Rybizki, Jan
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Schiavon, Ricard ...
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Schneider, Donal ...
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Wilso, John C.
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Zamora, Olga
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