Preliminary results of an observational campaign aiming at the study of the binary system LSS3074

Details Preliminary results of an observational campaign aiming at the study of the binary system LSS3074 Preliminary results of an observational campaign aiming at the study of the binary system LSS3074

Nov 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005mshe.work...77g&link_type=abstract

"Proceedings of "Massive Stars and High-Energy Emission in OB Associations", a workshop of the JENAM 2005, "Distant Worlds", hel

Computer Science

1

Scientific paper

We present preliminary results of an observational campaign aiming at the study of the binary system LSS3074. A new lightcurve clearly indicates that the system is in contact. Recent spectroscopy broadly confirms the previous results and the rather low masses of both components (O4f+ and O6-7:(f):). We further analyse an XMM-Newton observation of the object that indicates a rather hard X-ray spectrum. This is partly due to the high interstellar extinction towards the object but also to the high plasma temperature (kT ˜ 1.2-1.3 keV).

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