Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...19913701j&link_type=abstract
American Astronomical Society, 199th AAS Meeting, #137.01; Bulletin of the American Astronomical Society, Vol. 33, p.1511
Astronomy and Astrophysics
Astronomy
Scientific paper
We present imaging and polarimetry observation results at selected mid-IR wavelengths taken with the University of Denver's TNTCAM2 at the Wyoming Infrared Observatory's 2.3 m aperture telescope. Post AGB objects include the luminous blue variable AFGL 2298, CW Leo and R CrB. Planetary Nebulae include the Butterfly Nebula M 2-9 and NGC 7027. The characteristics of spectral emission distribution, dust emissivity and magnetic field orientation based on spatial intensity distribution and polarization will be discussed. The objects were chosen for their advanced state of stellar evolution and evidence of resolved nebular structure. In reconstructing our chopped and nodded images, we used a constrained least squares technique called the projected Landweber Method based on work done by Bertero et al. PASP (2000) 112;1121-1137 and the adaptation of the technique by Linz et al. A&A 2002 (in preparation). We acknowledge helpful conversations with Craig Smith, and support for this work from NSF grant AST 9724506, and from the estate of William Herschel Womble.
Jurgenson Colby A.
Stencel Robert E.
Theil David S.
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