Aims. The Cyg OB2 #5 system is thought to consist of a short-period (6.6 d) eclipsing massive binary orbited by an OB-star with a period of ~6.7 yr; these stars in turn are orbited by a distant early B-star with a period of thousands of years. However, while the inner binary has been studied many times, information is missing on the other stars, in particular the third star whose presence was indirectly postulated from recurrent modulations in the radio domain. Besides, to this date, the X-ray light curve could not be fully interpreted, for example in the framework of colliding-wind emission linked to one of the systems. Methods. We obtained new optical and X-ray observations of Cyg OB2 #5, which we combined to archival data. We performed a...
Context. Cyg OB2 is one of the most massive associations of O-type stars in our Galaxy. Despite the ...
Aims. We wish to study the origin of the X-ray emission of three massive stars in the Cyg OB2 associ...
Abstract: We present the first results of an observing campaign of the Cyg OB2 association with the ...
Aims. The Cyg OB2 #5 system is thought to consist of a short-period (6.6 d) eclipsing massive binary...
Context: The properties of the early-type binary Cyg OB2 #5 have been debated for many years and spe...
Context. The properties of the early-type binary Cyg OB2 #5 have been debated for many years and spe...
Aims. We wish to study the origin of the X-ray emission of three massive stars in the Cyg OB2 associ...
Context. Cyg OB2 is one of the most massive associations of O-type stars in our Galaxy. Despite the ...
Cyg OB2 #5, #8A, and #9 are binary or multiple massive stars in the Cyg OB2 association displaying s...
Three presumably young eclipsing binary systems in the direction of the Cygnus OB1, OB3, and OB9 ass...
WOS: 000336262600025Three presumably young eclipsing binary systems in the direction of the Cygnus O...
Context. Cyg OB2 is one of the most massive associations of O-type stars in our Galaxy. Despite the ...
Context. Nonthermal radio emission in massive stars is expected to arise in wind-wind collisions occ...
We present the first results of an observing campaign of the Cyg OB2 association with the XMM-Newton...
After the first detection of its binary nature, the spectroscopic monitoring of the non-thermal radi...
Context. Cyg OB2 is one of the most massive associations of O-type stars in our Galaxy. Despite the ...
Aims. We wish to study the origin of the X-ray emission of three massive stars in the Cyg OB2 associ...
Abstract: We present the first results of an observing campaign of the Cyg OB2 association with the ...
Aims. The Cyg OB2 #5 system is thought to consist of a short-period (6.6 d) eclipsing massive binary...
Context: The properties of the early-type binary Cyg OB2 #5 have been debated for many years and spe...
Context. The properties of the early-type binary Cyg OB2 #5 have been debated for many years and spe...
Aims. We wish to study the origin of the X-ray emission of three massive stars in the Cyg OB2 associ...
Context. Cyg OB2 is one of the most massive associations of O-type stars in our Galaxy. Despite the ...
Cyg OB2 #5, #8A, and #9 are binary or multiple massive stars in the Cyg OB2 association displaying s...
Three presumably young eclipsing binary systems in the direction of the Cygnus OB1, OB3, and OB9 ass...
WOS: 000336262600025Three presumably young eclipsing binary systems in the direction of the Cygnus O...
Context. Cyg OB2 is one of the most massive associations of O-type stars in our Galaxy. Despite the ...
Context. Nonthermal radio emission in massive stars is expected to arise in wind-wind collisions occ...
We present the first results of an observing campaign of the Cyg OB2 association with the XMM-Newton...
After the first detection of its binary nature, the spectroscopic monitoring of the non-thermal radi...
Context. Cyg OB2 is one of the most massive associations of O-type stars in our Galaxy. Despite the ...
Aims. We wish to study the origin of the X-ray emission of three massive stars in the Cyg OB2 associ...
Abstract: We present the first results of an observing campaign of the Cyg OB2 association with the ...