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arXiv · 1707.04209

Properties of O dwarf stars in 30 Doradus

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.

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C. Sabín-Sanjulián. 2017-07-13. Properties of O dwarf stars in 30 Doradus. https://doi.org/10.1017/s1743921317002800

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