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Title: The massive binary CPD-41 degrees 7742 - II. Optical light curve and X-ray observations
Authors: Sana, H
Antokhina, E
Royer, Pierre
Manfroid, J
Gosset, E
Rauw, G
Vreux, JM #
Issue Date: Oct-2005
Publisher: Edp sciences s a
Series Title: Astronomy & astrophysics vol:441 issue:1 pages:213-229
Abstract: In the first paper of this series, we presented a detailed high-resolution spectroscopic study of CPD - 41 degrees 7742, deriving for the first time an orbital solution for both components of the system. In this second paper, we focus on the analysis of the optical light curve and on recent XMM-Newton X-ray observations. In the optical, the system presents two eclipses, yielding an inclination i similar to 77 degrees. Combining the constraints from the photometry with the results of our previous work, we derive the absolute parameters of the system. We confirm that the two components of CPD- 41 degrees 7742 are main sequence stars (O9 V+ B1 - 1.5 V) with masses (M-1 similar to 18 M-. and M-2 similar to 10 M-.) and respective radii (R-1 similar to 7.5 R-. and R-2 similar to 5.4 R-.) close to the typical values expected for such stars.
ISSN: 0004-6361
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Institute of Astronomy
# (joint) last author

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