Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.248..715m&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 248, Feb. 15, 1991, p. 715-729. University of Californi
Astronomy and Astrophysics
Astronomy
46
Infrared Sources (Astronomy), Molecular Clouds, Near Infrared Radiation, Orion Nebula, Polarimetry, Astronomical Models, Diffuse Radiation, Early Stars, Interstellar Extinction, Reflection Nebulae, Stellar Color
Scientific paper
New high-spatial-resolution polarization images of the BN-KL region of OMC-1 from 1.25-3.6 microns are presented. At the longer wavelengths these show a centro-symmetric polarization vector pattern, centered mainly on IRc2, and high degrees of polarization across the nebula, confirming that the diffuse nebulosity is dominated by the scattering of radiation, mainly from IRc2. Degrees of polarization, position angles and magnitudes are given for the observable IRc sources; these are discussed. Color maps show that the nebula becomes bluer with increasing angular distance from IRc2, consistent with decreasing levels of extinction away from the star. Percentage polarization values increase with wavelength for most regions of the nebula and this is interpreted as due to the presence of grains substantially larger than those found in the diffuse ISM. Modeling of the observed 2.2-micron polarization values across the northwestern outflow is consistent with the outflow geometry being a parabolic cavity, with the scattering of radiation taking place preferentially from the surface of this cavity. In this model the outflow is inclined by no more than 30 deg from the plane-of-the-sky.
Aspin Colin
Axon David J.
Bailey Jon A.
Burton Michael G.
Hough James H.
No associations
LandOfFree
Near-infrared imaging polarimetry of bipolar nebulae. I - The BN-KL region of OMC-1 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Near-infrared imaging polarimetry of bipolar nebulae. I - The BN-KL region of OMC-1, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Near-infrared imaging polarimetry of bipolar nebulae. I - The BN-KL region of OMC-1 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1318256