3.8 Proceedings Paper

Low-metallicity (sub-SMC) massive stars

Journal

LIVES AND DEATH-THROES OF MASSIVE STARS
Volume 12, Issue S329, Pages 313-321

Publisher

CAMBRIDGE UNIV PRESS
DOI: 10.1017/S1743921317003088

Keywords

Galaxies: individual: IC 1613; NGC 3109; WLM; Sextans A; Stars: early-type; Stars: Population III; Stars: winds; outflows; Ultraviolet: stars

Funding

  1. Spanish MINECO [FIS2012-39162-C06-01, ESP2013-47809-C3-1-R, ESP2015-65597-C4-1-R]

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The double distance and metallicity frontier marked by the SMC has been finally broken with the aid of powerful multi-object spectrographs installed at 8-10m class telescopes. VLT, GTC and Keck have enabled studies of massive stars in dwarf irregular galaxies of the Local Group with poorer metal-content than the SMC. The community is working to test the predictions of evolutionary models in the low-metallicity regime, set the new standard for the metal-poor high-redshift Universe, and test the extrapolation of the physics of massive stars to environments of decreasing metallicity. In this paper, we review current knowledge on this topic.

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