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Morphokinematic properties of the 21 micron source IRAS 22272+5435

Published online by Cambridge University Press:  30 August 2012

Jun-ichi Nakashima ,
Sun Kwok ,
Bosco H. K. Yung ,
Yong Zhang ,
Nico Koning  and
Nikolaus Volgenau
Jun-ichi Nakashima
Affiliation:
Department of Physics, University of Hong Kong, Pokfulam Rd., Hong Kong, China email: [email protected]
Sun Kwok
Affiliation:
Department of Physics, University of Hong Kong, Pokfulam Rd., Hong Kong, China email: [email protected]
Bosco H. K. Yung
Affiliation:
Department of Physics, University of Hong Kong, Pokfulam Rd., Hong Kong, China email: [email protected]
Yong Zhang
Affiliation:
Department of Physics, University of Hong Kong, Pokfulam Rd., Hong Kong, China email: [email protected]
Nico Koning
Affiliation:
Department of Physics and Astronomy, University of Calgary, Calgary, CanadaT2N 1N4
Nikolaus Volgenau
Affiliation:
Owens Valley Radio Observatory, Big Pine, CA 93513, USA
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Abstract

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We obtained a high-resolution CO map of IRAS 22272+5435 in the CO J = 2–1 line using CARMA. The target exhibits a second biggest angular size of the circumstellar molecular envelope among known 21 μm sources. In the preliminary results, we found that the CO properties of IRAS 22272+5435 is clearly different from those of IRAS 07134+1005, which is another well-investigated 21 μm source. For example, elongations seen in the mid-infrared and CO images are extended in mutually perpendicular directions, although in case of IRAS 07134+1005 the CO feature coincides well with the mid-infrared structure.

Keywords

stars: AGB and post-AGBstars: carbonstars: individual (IRAS 22272+5435)stars: imagingstars: kinematicsstars: windsoutflows
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 458 - 459
Copyright
Copyright © International Astronomical Union 2012

References

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