New radio sources at AFGL 2591 - Young cluster or single star?

Astronomy and Astrophysics – Astronomy

Scientific paper

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Infrared Astronomy, Radio Sources (Astronomy), Star Clusters, Stellar Evolution, Astronomical Maps, Nebulae, Water Masers

Scientific paper

New sensitive VLA observations in the region about the galactic infrared source AFGL 2591 are reported. In addition to the two sources already known, two new sources at S(5 GHz) less than 1 mJy are identified. None of the four sources is coincident with the infrared position or the nearby H2O maser source. Two broad explanations for this disparity are discussed: that the radio sources are 'leaks' from an otherwise highly obscured ionizing source at the infrared position, or that AFGL 2591 is a cluster of at least five (four radio and one infrared) B0 or earlier stars powering individual H II regions.

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