New Models for Wolf-Rayet and O Star Populations in Young Starbursts

  title={New Models for Wolf-Rayet and O Star Populations in Young Starbursts},
  author={Daniel Schaerer and William D. Vacca},
  journal={The Astrophysical Journal},
  pages={618 - 644}
Using the latest stellar evolution models, theoretical stellar spectra, and a compilation of observed emission line strengths from Wolf-Rayet (W-R) stars, we construct evolutionary synthesis models for young starbursts. We explicitly distinguish between the various W-R subtypes (WN, WC, WO), whose relative frequency is a strong function of metallicity, and we treat O and Of stars separately. We calculate the numbers of O and W-R stars produced during a starburst and provide detailed predictions… 

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