Expanding molecular torus around the planetary nebula IRAS 21282 + 5050

Details Expanding molecular torus around the planetary nebula IRAS 21282 + 5050 Expanding molecular torus around the planetary nebula IRAS 21282 + 5050

Oct 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apj...345l..55s&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 345, Oct. 1, 1989, p. L55-L58.

Astronomy and Astrophysics

Astronomy

28

Interstellar Gas, Planetary Nebulae, Stellar Evolution, Carbon Monoxide, Emission Spectra, H Beta Line, Infrared Astronomy Satellite, Molecular Gases, Stellar Envelopes

Scientific paper

The CO (J = 1-0) emission at 115.271 GHz from the compact planetary nebula IRAS 21282 + 5050 has been mapped. The results suggest that the CO gas forms an expanding torus with an axis along the east-west direction, normal to the line of sight. The kinematical age of the torus is estimated at about 21,000 D yr, where D is the distance to IRAS 21282 + 5050 in kpc. It is concluded that IRAS 21282 + 5050 is in earlier evolutionary stage of planetary nebular than NGC 7027 and NGC 2346.

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