Infrared polarization images of star-forming regions. I - The ubiquity of bipolar structure

Details Infrared polarization images of star-forming regions. I - The ubiquity of bipolar structure Infrared polarization images of star-forming regions. I - The ubiquity of bipolar structure

Sep 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...378..611t&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 378, Sept. 10, 1991, p. 611-627.

Astronomy and Astrophysics

Astronomy

77

Astronomical Polarimetry, Infrared Imagery, Infrared Sources (Astronomy), Optical Polarization, Reflection Nebulae, Star Formation, Astrometry, Bipolarity, Interstellar Extinction, Mass Flow

Scientific paper

The inefficiency of the stellar formation process leads rather generally to high residual dust densities, and so to the existence of infrared reflection nebulosity (IRN), in regions of star formation. Polarization images of several star-forming regions with mass outflows (GSS 30, S255, GL 5180, GL 2591, GGD 27, and NGC 7538) presented here: (1) establish the universality of bipolarity and of shell or cavity structure in the IRN consistent with that of CO outflow; (2) identify the source of the mass outflow in each case; (3) show that the opening angle near this central source is large; and (4) demonstrate several instances of multiple shells, probably arising from episodic mass loss. Astrometry of 2.2-micron sources with arcsecond accuracy identifies the illuminating source of each IRN uniquely with a compact H II region or a bright IR source. The polarization images provide strong evidence for large-scale dust toroids around each of these sources. The density and mass of these disks are estimated from the extinction through the disk.

Affiliated with

Also associated with

No associations

Rating

Infrared polarization images of star-forming regions. I - The ubiquity of bipolar structure 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 Infrared polarization images of star-forming regions. I - The ubiquity of bipolar structure, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared polarization images of star-forming regions. I - The ubiquity of bipolar structure will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1334600