We report on the discovery of over 50 strong H alpha emitting objects towards the large OB association Cyg OB2 and the H II region DR 15 on its southern periphery. This was achieved using the INT Photometric H alpha Survey of the Northern Galactic Plane (IPHAS), combined with follow-up spectroscopy using the MMT multi-object spectrometer HectoSpec. We present optical spectra, supplemented with optical r', i' and H alpha photometry from IPHAS, and near-infrared J, H and K photometry from Two Micron All Sky Survey. The position of the objects in the (J - H) versus (H - K) diagram strongly suggests most of them are young. Many show Ca II infrared triplet emission indicating that they are in a pre-main-sequence phase of evolution of T Tauri and...
We present results of a high angular resolution survey of massive OB stars in the Cygnus OB2 associa...
© 2016 The Authors.To explain the nature of the high reddening (AV ≃ 10 mag) towards one of the most...
Context. Cyg OB2 is one of the most massive associations of O-type stars in our Galaxy. Despite the ...
We report on the discovery of over 50 strong H alpha emitting objects towards the large OB associati...
‘The definitive version is available at www.blackwell-synergy.com.’ Copyright Blackwell Publishing D...
Context. Cygnus OB2 is one of the richest OB associations in the local Galaxy, and is located in a v...
This is the final version of the article. Available from the American Astronomical Society via the D...
Context. The ultraviolet irradiation and the action of stellar winds of newly formed massive stars o...
Context. The compact association Cygnus OB2 is known to contain a large population of massive stars,...
In order to fully understand the gravitational collapse of molecular clouds, the star formation proc...
The definitive article can be found at: http://iopscience.iop.org/0004-637X/713/2/871 Copyright Amer...
Context. The Cygnus complex is one of the most powerful star forming regions at a close distance fro...
We have compiled a significantly updated and comprehensive census of massive stars in the nearby Cyg...
International audienceContext. Red supergiants are the evolved descendants of massive stars with ini...
In this paper, an extensive survey of the star-forming complex Sh2-252 has been undertaken with an a...
We present results of a high angular resolution survey of massive OB stars in the Cygnus OB2 associa...
© 2016 The Authors.To explain the nature of the high reddening (AV ≃ 10 mag) towards one of the most...
Context. Cyg OB2 is one of the most massive associations of O-type stars in our Galaxy. Despite the ...
We report on the discovery of over 50 strong H alpha emitting objects towards the large OB associati...
‘The definitive version is available at www.blackwell-synergy.com.’ Copyright Blackwell Publishing D...
Context. Cygnus OB2 is one of the richest OB associations in the local Galaxy, and is located in a v...
This is the final version of the article. Available from the American Astronomical Society via the D...
Context. The ultraviolet irradiation and the action of stellar winds of newly formed massive stars o...
Context. The compact association Cygnus OB2 is known to contain a large population of massive stars,...
In order to fully understand the gravitational collapse of molecular clouds, the star formation proc...
The definitive article can be found at: http://iopscience.iop.org/0004-637X/713/2/871 Copyright Amer...
Context. The Cygnus complex is one of the most powerful star forming regions at a close distance fro...
We have compiled a significantly updated and comprehensive census of massive stars in the nearby Cyg...
International audienceContext. Red supergiants are the evolved descendants of massive stars with ini...
In this paper, an extensive survey of the star-forming complex Sh2-252 has been undertaken with an a...
We present results of a high angular resolution survey of massive OB stars in the Cygnus OB2 associa...
© 2016 The Authors.To explain the nature of the high reddening (AV ≃ 10 mag) towards one of the most...
Context. Cyg OB2 is one of the most massive associations of O-type stars in our Galaxy. Despite the ...