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Metallicity Dependences of Massive Star Formation from Theoretical and Observational Perspectives

Published online by Cambridge University Press:  29 August 2024

K. E. I. Tanaka Open the ORCID record for K. E. I. Tanaka [Opens in a new window] ,
Y. Zhang ,
T. Shimonishi  and
R. Matsukoba
K. E. I. Tanaka*
Affiliation:
University of Colorado Boulder, Boulder, CO 80309, USA National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
Y. Zhang
Affiliation:
3University of Virginia, Charlottesville, VA 22904-4325, USA
T. Shimonishi
Affiliation:
4Niigata University, Ikarashi-ninocho 8050, Nishi-ku, Niigata, 950-2181, Japan
R. Matsukoba
Affiliation:
5Kyoto University, Sakyo, Kyoto 606-8502, Japan
*
email: kei.tanaka@colorado.edu
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Abstract

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Massive stars play crucial roles in astrophysical settings across cosmic history, and thus it is a fundamental problem to understand whether their formation processes are universal or diverse in various galactic environments. In particular, metallicity is the essential characteristic of cosmic evolution. Our theoretical studies have suggested some degrees of metallicity dependence of massive star formation. In the extremely metal-poor case of , protostellar disks are significantly unstable, and the photoionization feedback is more efficient. We also execute an ALMA survey targeting massive protostars in the Large Magellanic Clouds (LMC) with . We found that the outflow properties of LMC protostars (mass, momentum, energy) are consistent with those of Galactic protostars, suggesting the universality of massive star formation at least in the range of .

Keywords

stars: formation(stars:) binaries (including multiple): close(galaxies:) Magellanic Clouds
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 18 , Symposium S361: Massive Stars Near and Far , May 2022 , pp. 534 - 538
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Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2024. Published by Cambridge University Press on behalf of International Astronomical Union

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