Structure of Infrared-Bright Circumstellar Nebulae
Abstract
Detailed multi-wavelength, near-infrared maps and polarimetry have been made of AFGL 2591, AFGL 490, Cep A, S140, AFGL 618, and OH 0739-14, stars embedded in dust that absorbs starlight and reradiates strongly in the mid- infrared. A general Mie scattering model has been coded to yield intensity and polarization maps of bipolar nebulae in the infrared and visible parts of the spectrum. Hat Creek Millimeter Interferometer maps of AFGL 618 and NGC 7027 have been obtained which are being reproduced and combined with data taken at the Wyoming Infrared Observatory to produce detailed studies of these objects. The construction and testing of a photoelastic modulator data acquisition system was completed and is currently being used to acquire polarimetry of dust enshrouded stars.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1988
- Accession Number
- ADA200733
Entities
People
- Harley Thronson
- Paul Johnson
Organizations
- University of Wyoming