Hostname: page-component-586b7cd67f-t7czq Total loading time: 0 Render date: 2024-11-28T17:51:52.385Z Has data issue: false hasContentIssue false
  • English
  • Français

An X-ray study of mass-loss rate and wind acceleration of massive stars

Published online by Cambridge University Press:  05 September 2012

Yoshitomo Maeda  and
Yasuharu Sugawara
Yoshitomo Maeda
Affiliation:
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency 3-1-1 Yoshinodai, Sagamihara, Kanagawa 229-8510 email: [email protected]
Yasuharu Sugawara
Affiliation:
Department of Physics, Faculty of Science & Engineering, Chuo University, 1-13-27 Kasuga, Bunkyo, Tokyo 112-8551 email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

By monitoring WC7 and the O5.5 binary WR 140 with the Suzaku telescope, we demonstrate a new method to measure the mass loss rates of both stars. By using the absorption column density, we found a mass-loss rate for the WC7 component: ṀWC7 ≈ 1.2 × 10−5 M⊙ yr−1. We also measured the mass-loss rate of the companion O component using a luminosity variation in phases: ṀO5.5 ≈ 5 × 10−7 M⊙ yr−1.

Keywords

Massive starGRB progenitormass-loss rate
Type
Poster Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S279: Death of Massive Stars: Supernovae and Gamma-Ray Bursts , April 2011 , pp. 351 - 352
Copyright
Copyright © International Astronomical Union 2012

References

Fahed, R., et al. 2011, MNRAS, 418, 2CrossRefGoogle Scholar
Meynet, G. & Maeder, A. 2005, A&A, 429, 581Google Scholar
Monnier, J. D., Zhao, M., Pedretti, E., et al. 2011, ApJL, 742, L1CrossRefGoogle Scholar
Setia Gunawan, D. Y. A., van der Hucht, K. A., Williams, P. M., et al. 2001, A&A, 376, 460Google Scholar
Stevens, I. R., Blondin, J. M., & Pollock, A. M. T. 1992, ApJL, 386, 265CrossRefGoogle Scholar
Sugawara, Y. et al. 2012, PASJ, submittedGoogle Scholar
Vink, J. S., de Koter, A., & Lamers, H. J. G. L. M. 2001, A&A, 369, 574Google Scholar
Williams, P. M., van der Hucht, K. A., Pollock, A. M. T., Florkowski, D. R., van der Woerd, H., & Wamsteker, W. M. 1990, MNRAS, 243, 662Google Scholar
Williams, P. M., et al. 2009, MNRAS, 395, 1749CrossRefGoogle Scholar