The multiple infrared source GL 437

Astronomy and Astrophysics – Astronomy

Scientific paper

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46

B Stars, Early Stars, Infrared Radiation, Infrared Stars, Nebulae, Astronomical Photometry, Cosmic Dust, H Ii Regions, Infrared Astronomy, Interstellar Matter, Molecular Clouds, Radio Astronomy, Stellar Mass Ejection

Scientific paper

Infrared and radio continuum observations of the multiple infrared source GL 437 show that it consists of a compact H II region plus two objects which are probably early B stars undergoing rapid mass loss. The group of sources appears to be a multiple system of young stars that have recently emerged from the near side of a molecular cloud. Emission in the unidentified 3.3 micron feature is associated with, but more extended than, the emission from the compact H II region; it probably arises from hot dust grains at the interface between the H II region and the molecular cloud.

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