APOGEE Chemical Abundances of the Large Magellanic Cloud

Hasselquist, Sten; Nidever, David; Hayes, Christian R.; Anguiano, Borja; Majewski, Steve; Sobeck, Jennifer; Stringfellow, Guy; Beers, Timothy C.; Jonsson, Henrik; Lian, Jianhui; Cohen, Roger; Zasowski, Gail; Mackereth, John T.; Battaglia, Giuseppina; Weinberg, David; Lane, Richard R.; Long-Pena, Penelope; Gallart, Carme; Villanova, Sandro; Rix, Hans-Walter; Andrews, Brett; Cunha, Katia; Smith, Verne; Choi, Yumi; Geisler, Doug; Carrera, Ricardo; Almeida, Andres; Fernandez-Trincado, Jose G.

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会議論文

APOGEE Chemical Abundances of the Large Magellanic Cloud

MPS-Authors

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

Nidever, David
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;

Anguiano, Borja
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Majewski, Steve
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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

Stringfellow, Guy
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Beers, Timothy C.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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

Lian, Jianhui
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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

Zasowski, Gail
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Mackereth, John T.
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Battaglia, Giuseppina
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Weinberg, David
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;

Long-Pena, Penelope
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Gallart, Carme
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Villanova, Sandro
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;

Andrews, Brett
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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

Smith, Verne
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Choi, Yumi
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

Geisler, Doug
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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

Almeida, Andres
Max Planck Institute for Astronomy, Max Planck Society and Cooperation Partners;

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

External Resource

https://ui.adsabs.harvard.edu/abs/2019AAS...23331601H
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引用

Hasselquist, S., Nidever, D., Hayes, C. R., Anguiano, B., Majewski, S., Sobeck, J., Stringfellow, G., Beers, T. C., Jonsson, H., Lian, J., Cohen, R., Zasowski, G., Mackereth, J. T., Battaglia, G., Weinberg, D., Lane, R. R., Long-Pena, P., Gallart, C., Villanova, S., Rix, H.-W., Andrews, B., Cunha, K., Smith, V., Choi, Y., Geisler, D., Carrera, R., Almeida, A., & Fernandez-Trincado, J. G. (2019). APOGEE Chemical Abundances of the Large Magellanic Cloud. In American Astronomical Society Meeting Abstracts #233.

引用: https://hdl.handle.net/21.11116/0000-0005-D0FE-2

要旨

To date, the SDSS-IV APOGEE survey has obtained S/N > 70 spectra for over 2,500 red giant stars distributed across much of the Large Magellanic Cloud (LMC), allowing for the characterization of the detailed abundance patterns for 10+ chemical elements. In this project, we interpret the chemical abundance patterns of the LMC by comparing them to the chemical abundance patterns of the Sagittarius Dwarf Galaxy (Sgr) and the Milky Way (MW), as well as by invoking chemical evolution models (such as flexCE and chempy) that include the LMC's star formation history. Preliminary results show that the LMC shares [Ni/Fe] and [Al/Fe] deficiencies with Sgr, but exhibits alpha-element abundances ([O/Fe], [Mg/Fe], and [Si/Fe]) that are near-solar. There is also a correlation with [O/Fe] and [Mg/Fe] with [Fe/H] at [Fe/H] > -1.0. These results suggest that the LMC exhibited low star formation efficiency (as compared to Sgr and the MW) at early times, but has since experienced several starbursts which spawned the stars with [Fe/H] > -1.0. Using these APOGEE chemical abundance patterns as constraints, we use chemical evolution models to better characterize the nature (strength, time, duration, IMF, etc.) of these starbursts.