Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21442809m&link_type=abstract
American Astronomical Society, AAS Meeting #214, #428.09; Bulletin of the American Astronomical Society, Vol. 41, p.699
Astronomy and Astrophysics
Astronomy
Scientific paper
The evolved Carbon-rich asymptotic giant branch (AGB) star IRC +10216 (CW Leo) is one of the brightest infrared (IR) sources in the sky. As the closest example of mass loss from an evolved star, it has been very well studied. It is known to vary in brightness with a period of 649 days, has been shown to have complex structure on small scales in the near-IR, and various shell-like structures attributed to episodes of mass loss have been observed on larger scales at visible wavelengths. It has also been observed extensively in the radio yielding a list of complex molecules. Due to its high flux near 10 microns, IRC +10216 has received comparatively little attention from mid-IR imagers - which it tends to saturate on large telescopes. We have obtained diffraction limited images of IRC +10216 at the 6.5m MMT, in six 10% filters ranging from 7.9 to 12.52 microns. These images have revealed resolved structure which exhibits variations between the filter bands.
Close Laird M.
Greene Thomas P.
Hinz Philip M.
Hoffmann William F.
Males Jared
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