Other
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.9602f&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #96.02; Bulletin of the American Astronomical Society, Vol. 34, p.1263
Other
2
Scientific paper
The detection of water vapor (Melnick et al. 2001) and OH (Ford et al. 2003) around the carbon-rich AGB star, IRC+10216, has been interpreted as evidence for the existence of an extrasolar cometary system orbiting IRC+10216. This interpretation is based on the expectation that no oxygen-bearing molecules other than CO, and small amounts of SiO and HCO+, would be found in such a carbon-rich environment. The cometary system in IRC+10216, analogous to the Solar System's Kuiper Belt, should be the source of all oxygen-bearing molecules other than CO, SiO or HCO+ detected around the star. We report the detection of formaldehyde (H2CO) in the circumstellar envelope of IRC+10126, based on observations with the IRAM 30-m telescope. I will discuss what these observations can tell us about the chemical composition and spatial distribution of this extrasolar cometary system.
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