Herschel/PACS: Constraining clumping in the intermediate wind region of OB stars

At present, it is well established that previously accepted mass-loss rates (Ṁ) of luminous OB stars may be overestimated when clumping is neglected. Our Herschel/PACS Far-Infrared (Far-IR) observations of a set of OB stars allow us to improve our knowledge of clumping stratification, constraining c...

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Bibliographic Details
Published in:Proceedings of the International Astronomical Union 2014-06, Vol.9 (S307), p.137-139
Main Authors: Rubio-Díez, M. M., Najarro, F., Sundqvist, J. O., Traficante, A., Puls, J., Calzoletti, L., Herrero, A., Figer, D., Martin-Pintado, J.
Format: Article
Language:English
Subjects:
Astronomical bodies
Astronomical instruments
Astronomy
Astrophysics
Constraining
Contributed Papers
Estimates
Massive stars
Stars & galaxies
Stratification
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Summary:At present, it is well established that previously accepted mass-loss rates (Ṁ) of luminous OB stars may be overestimated when clumping is neglected. Our Herschel/PACS Far-Infrared (Far-IR) observations of a set of OB stars allow us to improve our knowledge of clumping stratification, constraining clumping properties in intermediate wind regions. In this work, better sampled clumping structure estimates are provided for ι Ori, ε Ori and ξ Per as well as an initial estimate of the clumping properties of the wind from τ Sco. These observations will allow us to obtain reliable mass-loss rates and improve our understanding of the wind physics.
ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921314006565