English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse
  1. View item / 
  2. Item Summary

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

Chemical Cartography with APOGEE: Multi-element Abundance Ratios

MPS-Authors

Weinberg,  David H.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Holtzman,  Jon A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hasselquist,  Sten
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bird,  Jonathan C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Johnson,  Jennifer A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Shetrone,  Matthew
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Sobeck,  Jennifer
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Allende Prieto,  Carlos
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Bizyaev,  Dmitry
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Carrera,  Ricardo
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cohen,  Roger E.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Cunha,  Katia
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Ebelke,  Garrett
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Fernandez-Trincado,  J. G.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

García-Hernández,  D. A.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Hayes,  Christian R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Jönsson,  Henrik
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Lane,  Richard R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Majewski,  Steven R.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Malanushenko,  Viktor
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mészáros,  Szabolcs
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Nidever,  David L.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Nitschelm,  Christian
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Pan,  Kaike
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rix,  Hans-Walter
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Rybizki,  Jan
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Schiavon,  Ricardo P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Schneider,  Donald P.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Wilson,  John C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Zamora,  Olga
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

External Resource

https://ui.adsabs.harvard.edu/abs/2019ApJ...874..102W
(Any fulltext)

Fulltext (restricted access)
There are currently no full texts shared for your IP range.
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available
Citation

Weinberg, D. H., Holtzman, J. A., Hasselquist, S., Bird, J. C., Johnson, J. A., Shetrone, M., et al. (2019). Chemical Cartography with APOGEE: Multi-element Abundance Ratios. The Astrophysical Journal, 874.


Cite as: https://hdl.handle.net/21.11116/0000-0005-CF76-E
Abstract
We map the trends of elemental abundance ratios across the Galactic disk, spanning R=3{--}15 {kpc} and midplane distance | Z| =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-α) and high-[Fe/Mg] (low-α) populations, which depend strongly on R and | Z| . 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.