Tycho 2 stars with infrared excess in the MSX Point Source Catalogue

Details Tycho 2 stars with infrared excess in the MSX Point Source Catalogue Tycho 2 stars with infrared excess in the MSX Point Source Catalogue

2005-08-22

arxiv.org/abs/astro-ph/0508453v2

Mon.Not.Roy.Astron.Soc.363:1111-1124,2005

Astronomy and Astrophysics

Astrophysics

Added Comment: 16 pages, 9 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1365-2966.2005.09489.x

Stars of all evolutionary phases have been found to have excess infrared emission due to the presence of circumstellar material. To identify such stars, we have positionally correlated the infrared MSX point source catalogue and the Tycho 2 optical catalogue. A near/mid infrared colour criteria has been developed to select infrared excess stars. The search yielded 1938 excess stars, over half (979) have never previously been detected by IRAS. The excess stars were found to be young objects such as Herbig Ae/Be and Be stars, and evolved objects such as OH/IR and carbon stars. A number of B type excess stars were also discovered whose infrared colours could not be readily explained by known catalogued objects.

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