An infrared study of orion molecular cloud-2 (OMC-2)

J. J. Johnson, R. D. Gehrz, T. J. Jones, J. A. Hackwell, G. L. Grasdalen

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22 Scopus citations


We report 1.2-23 μm 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.

Original languageEnglish (US)
Pages (from-to)518-529
Number of pages12
JournalAstronomical Journal
Issue number2
StatePublished - Aug 1990


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