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26 April 2024

» arxiv » astro-ph/0206233

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Stellar and Wind Properties of LMC WC4 stars - A metallicity dependence for Wolf-Rayet mass-loss rates
Paul A. Crowther ; Luc Dessart ; D. John Hillier ; Jay B. Abbott ; Alex W. Fullerton ;
Date:	14 Jun 2002
Subject:	astro-ph
Affiliation:	UCL), Luc Dessart (Utrecht), D. John Hillier (Pittsburgh), Jay B. Abbott (UCL), Alex W. Fullerton (JHU
Abstract:	We use ultraviolet space-based (FUSE, HST) and optical/IR ground-based (2.3m MSSSO, NTT) spectroscopy to determine the physical parameters of six WC4-type Wolf-Rayet stars in the Large Magellanic Cloud. Stellar parameters are revised significantly relative to Grafener et al. (1998) based on improved observations and more sophisticated model atmosphere codes, which account for line blanketing and clumping. We find that stellar luminosities are revised upwards by up to 0.4 dex, with surface abundances spanning a lower range of 0.1
Source:	arXiv, astro-ph/0206233
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