Spectroscopic Evolutionary Synthesis Models of Wolf-Rayet Galaxies

  • H. Krüger
  • U. Fritze-V. Alvensleben
  • K. J. Fricke
  • H.-H. Loose


We present spectroscopic evolutionary synthesis calculations for starburst galaxies of various metallicities in order to model the broad emission lines HeII λ4686 and CIII λ4650 produced by Wolf-Rayet (WR) stars in the spectra of WR galaxies. The strengths of both lines strongly decrease with decreasing metallicity. The presence of WR emission features is a clear indicator of very recent. star formation less than 4 to 7 × 106 yr ago. Bursts of duration 1 to 5 × 106 yr which lead to an increase in the total stellar mass in the galaxy by 0.1 to 10 % are compatible with the equivalent width of Hell λ4686 observed in WR galaxies.


Star Formation Massive Star Equivalent Width Burst Duration Starburst Galaxy 
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Copyright information

© Springer Science+Business Media Dordrecht 1993

Authors and Affiliations

  • H. Krüger
    • 1
  • U. Fritze-V. Alvensleben
    • 1
  • K. J. Fricke
    • 1
  • H.-H. Loose
    • 1
  1. 1.Universitätssternwarte GöttingenGöttingenGermany

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