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The mass and helium discrepancy in massive young stars

  • I. “Norman” Early-Type Stars
  • Conference paper
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The Atmospheres of Early-Type Stars

Part of the book series: Lecture Notes in Physics ((LNP,volume 401))

Abstract

We present the results of the spectroscopic analysis of 25 galactic luminous OB stars. Using these data, spectroscopic and wind masses are derived. Both masses agree within the errors and disagree with evolutionary masses. Helium abundances are higher than normal for many objects, which cannot be explained by evolutionary calculations. We believe that the differences are significant, and call them the helium discrepancy and the mass discrepancy respectively. We indicate some possibilities of improving the physics in both theories in order to reduce the discrepancies.

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Authors and Affiliations

  1. Instituto de Astrofísica de Canarias, E-38200, La Laguna, Tenerife, Spain

    A. Herrero & J. M. Vilchez

  2. Universität-Sternwarte München, Scheinerst. 1, D-8000, München 80, Germany

    R. P. Kudritzki, D. Kunze, K. Butler & S. Haser

  3. Max-Planck Institut für Astrophysik, D-8064, Garching bei München

    R. P. Kudritzki & S. Haser

Authors
  1. A. Herrero
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  2. R. P. Kudritzki
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  3. J. M. Vilchez
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  4. D. Kunze
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  5. K. Butler
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  6. S. Haser
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Editor information

U. Heber C. Simon Jeffery

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© 1992 Springer-Verlag

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Herrero, A., Kudritzki, R.P., Vilchez, J.M., Kunze, D., Butler, K., Haser, S. (1992). The mass and helium discrepancy in massive young stars. In: Heber, U., Jeffery, C.S. (eds) The Atmospheres of Early-Type Stars. Lecture Notes in Physics, vol 401. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-55256-1_269

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  • DOI: https://doi.org/10.1007/3-540-55256-1_269

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-55256-7

  • Online ISBN: 978-3-540-46997-1

  • eBook Packages: Springer Book Archive

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