The properties of ten O-type stars in the low-metallicity galaxies IC 1613, WLM, and NGC 3109

  title={The properties of ten O-type stars in the low-metallicity galaxies IC 1613, WLM, and NGC 3109},
  author={Frank Tramper and Hugues Sana and A. de Koter and Lex Kaper and Oscar Hern{\'a}n Ram{\'i}rez-Agudelo},
  journal={Astronomy and Astrophysics},
Context. Massive stars likely played an important role in the reionization of the Universe, and the formation of the first black holes. They are potential progenitors of long-duration gamma-ray bursts, seen up to redshifts of about ten. Massive stars in low-metallicity environments in the local Universe are reminiscent of their high redshift counterparts, emphasizing the importance of the study of their properties and evolution. In a previous paper, we reported on indications that the stellar… 

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