Properties of O dwarf stars in 30 Doradus

C. Sabín-Sanjulián

doi:10.1017/S1743921317002800

Properties of O dwarf stars in 30 Doradus

Solar and Stellar Astrophysics 2017-11-15 v1

Authors: C. Sabín-Sanjulián

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Abstract

We perform a quantitative spectroscopic analysis of 105 presumably single O dwarf stars in 30 Doradus, located within the Large Magellanic Cloud. We use mid-to-high resolution multi-epoch optical spectroscopic data obtained within the VLT-FLAMES Tarantula Survey. Stellar and wind parameters are derived by means of the automatic tool IACOB-GBAT, which is based on a large grid of FASTWIND models. We also benefit from the Bayesian tool BONNSAI to estimate evolutionary masses. We provide a spectral calibration for the effective temperature of O dwarf stars in the LMC, deal with the mass discrepancy problem and investigate the wind properties of the sample.

Keywords

O dwarf stars 30 Doradus spectroscopic analysis stellar parameters wind properties FASTWIND models BONNSAI mass discrepancy

Cite

@article{arxiv.1707.04209,
  title  = {Properties of O dwarf stars in 30 Doradus},
  author = {C. Sabín-Sanjulián},
  journal= {arXiv preprint arXiv:1707.04209},
  year   = {2017}
}

Comments

5 pages, 3 figures. Proceedings IAUS329: The lives an death-throes of massive stars

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