Infrared reflection nebulae in Orion Molecular Cloud

Journal Article · Mon Dec 01 04:00:00 EST 1986 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/164777· OSTI ID:6512715

Pendleton, Y; Werner, M W; Capps, R; Lester, D

New observations of Orion Molecular Cloud 2 have been made from 1 to 100 microns using the NASA Infrared Telescope Facility and the Kuiper Airborne Observatory. An extensive program of polarimetry, photometry, and spectrophotometry has shown that the extended emission regions associated with two of the previously known near-infrared sources, IRS 1 and IRS 4, are infrared reflection nebulae, and that the compact sources IRS 1 and IRS 4 are the main luminosity sources in the cloud. The constraints from the far-infrared observations and an analysis of the scattered light from the IRS 1 nebula show that OMC-2/IRS 1 can be characterized by L of 500 solar luminosities or less and T of roughly 1000 K. The near-infrared albedo of the grains in the IRS 1 nebula is greater than 0.08. 27 references.

• Research Organization: NASA, Ames Research Center, Moffett Field, CA; Hawaii Univ., Honolulu; Texas Univ., Austin
• OSTI ID: 6512715
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 311; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
COSMIC DUST
COSMIC GASES
DUSTS
ELECTROMAGNETIC RADIATION
ENERGY SPECTRA
FAR INFRARED RADIATION
FLUIDS
GASES
INFRARED RADIATION
NEAR INFRARED RADIATION
NEBULAE
POLARIMETRY
RADIATIONS
SPECTRA
SPECTROPHOTOMETRY