Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...371..631h&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 371, April 20, 1991, p. 631-635. Research supported by NASA and NSERC.
Astronomy and Astrophysics
Astronomy
39
Infrared Sources (Astronomy), Planetary Nebulae, Protoplanets, Stellar Envelopes, Stellar Spectra, Astronomical Photometry, Astronomical Spectroscopy, Carbon, Infrared Astronomy Satellite
Scientific paper
Ground-based photometry and spectroscopy is presented for IRAS 22272 + 5435, a 9th mag star with a large infrared excess. The flux distribution is 'double-peaked', with a visible and near-infrared component due to the reddened photosphere and a far-infrared component presumably due to a detached dust shell. About equal amounts of energy are detected from each. The spectrum is that of a peculiar G supergiant, Gp Ia. In addition, strong molecular bands of C3 and C2 are observed. The flux distribution is modeled and, together with published molecular-line radio observations, allows the determination of basic parameters of the central star and the dust shell. The source has the characteristics one would expect of a proto-planetary nebula, an object in transition from the asymptotic giant branch to the planetary nebula phase.
Hrivnak Bruce J.
Kwok Sun
No associations
LandOfFree
The carbon-rich proto-planetary nebula IRAS 22272 + 5435 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 The carbon-rich proto-planetary nebula IRAS 22272 + 5435, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The carbon-rich proto-planetary nebula IRAS 22272 + 5435 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1790457