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What are the implications of stellar chemical abundances in dwarf galaxies?

Published online by Cambridge University Press:  30 October 2019

Takuma Suda Open the ORCID record for Takuma Suda [Opens in a new window] ,
Wako Aoki ,
Yutaka Katsuta ,
Shimako Yamada ,
Tadafumi Matsuno Open the ORCID record for Tadafumi Matsuno [Opens in a new window] ,
Saku Iwata ,
Yuki Takei  and
Masayuki Y. Fujimoto
Takuma Suda
Affiliation:
Research Center for the Early Universe, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan email: [email protected]
Wako Aoki
Affiliation:
Astronomical Observatory of Japan, Osawa 2-21-1, Mitaka, Tokyo 181-8588, Japan Department of Astronomical Science, School of Physical Sciences, The Graduate University of Advanced Studies (SOKENDAI), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Yutaka Katsuta
Affiliation:
Department of Cosmosciences, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
Shimako Yamada
Affiliation:
Department of Cosmosciences, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan
Tadafumi Matsuno
Affiliation:
Department of Astronomical Science, School of Physical Sciences, The Graduate University of Advanced Studies (SOKENDAI), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Saku Iwata
Affiliation:
Research Center for the Early Universe, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan email: [email protected]
Yuki Takei
Affiliation:
Research Center for the Early Universe, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan email: [email protected]
Masayuki Y. Fujimoto
Affiliation:
Department of Cosmosciences, Hokkaido University, Kita 10 Nishi 8, Kita-ku, Sapporo, Hokkaido 060-0810, Japan Faculty of Engineering, Hokkai-Gakuen University, Minami 26 Nishi 11, Chuo-ku, Sapporo, Hokkaido 064-0926, Japan
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Abstract

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We analyse the chemical abundances of stars in the local group dwarf galaxies using the SAGA database. The inspection of the relationship between Eu and Ba abundances confirms an anomalously Ba-rich population in Fornax, which indicates a pre-enrichment of interstellar gas with r-process elements.

Keywords

astronomical data bases: miscellaneousstars: abundancesstars: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S344: Dwarf Galaxies: From the Deep Universe to the Present , August 2018 , pp. 220 - 221
Copyright
© International Astronomical Union 2019 

References

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