The Influence of the Ratio of Total to Selective Extinction on the Determination of the Mass Loss Rate of Wolf Rayet Stars from Infrared Excess Measurements

  • P. S. The
  • K. A. van der Hucht
  • M. Arens
Part of the International Astronomical Union/Union Astronomique Internationale book series (IAUS, volume 99)


It is shown that the mass loss rate of the WN7 star HD 93162 decreases with larger values of the ratio of total to selective extinction R. For HD 93162 the mass loss rate will change one order of magnitude, only if ΔR ~ 2. Mass loss rates are derived for nine other WR stars of which visual, red and near-infrared photometric observations were obtained.


Mass Loss Rate Open Cluster Spectral Energy Distribution Wolf Rayet Star Selective Extinction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. Barlow, M.J., Smith, L.J., and Willis, A.J.: 1981, Monthly Notices Roy. Astron. Soc. 196, 101.ADSGoogle Scholar
  2. Dickel, H.R., Habing, H.J., and Isaacman, R.: 1980, Astrophys. J. (Letters) 238, L39.ADSCrossRefGoogle Scholar
  3. Forte, J.C.: 1978, Astron. J. 83, 1199.ADSCrossRefGoogle Scholar
  4. Hackwell, J.A., Gehrz, R.D., and Smith, J.R.: 1974, Astrophys. J. 192, 383.ADSCrossRefGoogle Scholar
  5. Herbst, W.: 1976, Astroph. J. 208, 923.ADSCrossRefGoogle Scholar
  6. Hidayat, B., Supelli, K., and van der Hucht,K.A.: 1981, these proceedings.Google Scholar
  7. Hoffleit, D.: 1953, Ann. Harvard Coll. Obs. 119, No. 2.Google Scholar
  8. van der Hucht, K.A., Conti, P.S., Lundström, I., and Stenholm, B.: 1981, Space Sci. Rev. 28, 227.ADSGoogle Scholar
  9. Spitzer, L.: 1962, Physics of Fully Ionized Gases, 2nd ed., Interscience, New York, p. 148.Google Scholar
  10. Thé, P.S., Bakker, R., Tjin A Djie, H.R.E.: 1980a, Astron. Astroph. 89, 209.ADSGoogle Scholar
  11. Thé, P.S., Bakker, R., Antalova, A.: 1980b, Astron. Astroph. Suppl. Ser. 41, 93.ADSGoogle Scholar
  12. Turner, D.G., Moffat, A.F.J.: 1980, Mon. Not. Roy. Astr. Soc. 192, 283.ADSGoogle Scholar
  13. Willis, A.J.: 1981, in C. Chiosi and R. Stalio (eds), Effects of Mass Loss on Stellar Evolution, IAU Coll. 59, 27.Google Scholar
  14. Wright, A.E., Barlow, M.J.: 1975, Mon. Not. Roy. Astr. Soc. 170, 41.ADSGoogle Scholar

Copyright information

© IAU 1982

Authors and Affiliations

  • P. S. The
    • 1
  • K. A. van der Hucht
    • 2
  • M. Arens
    • 1
  1. 1.Astronomical InstituteUniversity of AmsterdamThe Netherlands
  2. 2.Space Research LaboratoryUniversity of UtrechtThe Netherlands

Personalised recommendations