Properties of O dwarf stars in 30 Doradus
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.
- Publication:
-
The Lives and Death-Throes of Massive Stars
- Pub Date:
- November 2017
- DOI:
- arXiv:
- arXiv:1707.04209
- Bibcode:
- 2017IAUS..329..228S
- Keywords:
-
- Galaxies: Magellanic Clouds;
- Stars: atmospheres;
- Stars: early-type;
- Stars: fundamental parameters;
- Astrophysics - Solar and Stellar Astrophysics
- E-Print:
- 5 pages, 3 figures. Proceedings IAUS329: The lives an death-throes of massive stars