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Near infrared spectroscopy of W51 IRS-2

White, G. J.; Phillips, J. P.; Williams, P. M.; Watt, G. D. and Richardson, K. J. (1982). Near infrared spectroscopy of W51 IRS-2. Astronomy and Astrophysics, 116 pp. 293–295.

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Abstract

Near-infrared spectra at 2.95-3.5 μm and 3.99-10 μm have been obtained towards W51 IRS-2 and its surroundings, in order to investigate the spatial variations in intensity of the 3.28 μm unidentified feature and the 4.05 μm Brackett-α line. The Br-α and 3.28 μm features occupy a broadly similar spatial zone, which is characterised by an unresolved core responsible for most of the emission, and an extended and considerably weaker halo. Grain properties required to excite the 4.28 microns line, the nature of the 3.28 μm emission, and its relation to the source structure are discussed.

Item Type: Journal Article
Copyright Holders: 1982 European Southern Observatory
ISSN: 1432-0746
Keywords: astronomical spectroscopy; infrared astronomy; line spectra; radio sources (astronomy); Milky Way galaxy; near infrared radiation; spatial distribution
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 33789
Depositing User: Glenn White
Date Deposited: 07 Jun 2012 08:47
Last Modified: 08 Jun 2012 08:38
URI: http://oro.open.ac.uk/id/eprint/33789
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