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Title:
An infrared study of Orion Molecular Cloud-2 (OMC-2)
Authors:
Johnson, J. J.; Gehrz, R. D.; Jones, T. J.; Hackwell, J. A.; Grasdalen, G. L.
Affiliation:
AA(Minnesota, University, Minneapolis), AB(Minnesota, University, Minneapolis), AC(Minnesota, University, Minneapolis), AD(The Aerospace Corp., Space Sciences Laboratory, Los Angeles, CA), AE(Wyoming Infrared Observatory, Laramie)
Publication:
Astronomical Journal (ISSN 0004-6256), vol. 100, Aug. 1990, p. 518-529. Research supported by NASA, NSF, USAF, University of Minnesota, and Aerospace Corp. (AJ Homepage)
Publication Date:
08/1990
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
ASTRONOMICAL PHOTOGRAPHY, ASTRONOMICAL PHOTOMETRY, INFRARED ASTRONOMY, MOLECULAR CLOUDS, ORION NEBULA, REFLECTION NEBULAE, EARLY STARS, STAR FORMATION, STELLAR LUMINOSITY, STELLAR MASS
DOI:
10.1086/115533
Bibliographic Code:
1990AJ....100..518J

Abstract

This paper reports 1.2-23 micron photometry for 11 discrete sources in Orion Molecular Cloud-2 (OMC-2). These data, combined with H and K photometric and K polarimetric images, are used to model the cluster sources. Most appear to be young stars of roughly solar mass. Some have circumstellar dust reradiation or reflection nebulosity. A model based on single scattering of light from an exciting star explains some features of the IRS 1 nebula, the largest reflection nebula in OMC-2. However, the red colors and high surface brightness of the IRS 1 nebula require a cool excitation source that is more luminous than far-infrared observations would indicate.

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