publication . Article . Preprint . 2017

Ionizing spectra of stars that lose their envelope through interaction with a binary companion : role of metallicity

Gotberg, Y.; Selma de Mink; Groh, J. H.;
Open Access
  • Published: 01 Jan 2017 Journal: Astronomy & Astrophysics, volume 608, page A11 (issn: 0004-6361, eissn: 1432-0746, Copyright policy)
  • Publisher: EDP Sciences
  • Country: Netherlands
Abstract
Understanding ionizing fluxes of stellar populations is crucial for various astrophysical problems including the epoch of reionization. Short-lived massive stars are generally considered as the main stellar sources. We examine the potential role of less massive stars that lose their envelope through interaction with a binary companion. Here, we focus on the role of metallicity ( Z ). For this purpose we used the evolutionary code MESA and created tailored atmosphere models with the radiative transfer code CMFGEN. We show that typical progenitors, with initial masses of 12 M ⊙ , produce hot and compact stars (~ 4 M ⊙ , 60–80 kK, ~1 R ⊙ ). These stripped stars cop...
Subjects
arXiv: Astrophysics::Solar and Stellar AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Galaxy AstrophysicsAstrophysics::Earth and Planetary Astrophysics
free text keywords: Radiative transfer, Astrophysics, Reionization, Astronomy, Supernova, Stars, Physics, Initial mass function, Opacity, Gravitational wave, Metallicity, binaries: close, ultraviolet: general, stars: atmospheres, subdwarfs, stars: Wolf-Rayet, stars: mass-loss, Astrophysics - Solar and Stellar Astrophysics
Funded by
EC| BinCosmos
Project
BinCosmos
The Impact of Massive Binaries Through Cosmic Time
  • Funder: European Commission (EC)
  • Project Code: 714063
  • Funding stream: H2020 | ERC | ERC-STG
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publication . Article . Preprint . 2017

Ionizing spectra of stars that lose their envelope through interaction with a binary companion : role of metallicity

Gotberg, Y.; Selma de Mink; Groh, J. H.;