Title of article
Spectroscopic follow-up of the colliding-wind binary WR140 during the 2009 January periastron passage
Author/Authors
Remi Fahed، نويسنده , , Anthony F. J. Moffat، نويسنده , , Juan Zorec، نويسنده , , Thomas Eversberg، نويسنده , , Andre-Nicolas Chene، نويسنده , , Filipe Alves، نويسنده , , Wolfgang Arnold، نويسنده , , Thomas Bergmann، نويسنده , , Luis F. Gouveia Carreira، نويسنده , , Filipe Marques Dias، نويسنده , , Alberto Fernando، نويسنده , , Jose Sanchez Gallego، نويسنده , , Thomas Hunger، نويسنده , , Johan H. Knapen، نويسنده , , Rob، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
2
From page
501
To page
502
Abstract
We present the results from the spectroscopic follow-up of WR140 (WC7 + O4-5) during its last periastron passage in january 2009. This object is known as the archetype of colliding wind binaries and has a relatively large period (_8 years) and eccentricity (_0.89). We provide updated values for the orbital parameters, new estimates for the WR and O star masses and new constraints on the mass-loss rates.
Keywords
stars: fundamental parameters , binaries: general , stars: Wolf-Rayet , outflows , stars: winds
Journal title
Proceedings of the International Astronomical Union
Serial Year
2010
Journal title
Proceedings of the International Astronomical Union
Record number
667922
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