Expanding molecular torus around the planetary nebula IRAS 21282 + 5050

Journal Article · Sun Oct 01 04:00:00 EDT 1989 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/185551· OSTI ID:5126260

Shibata, K M; Tamura, S; Deguchi, S; Hirano, N; Kameya, O ^[1]

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1. Tohoku Univ., Sendai (Japan) Nobeyama Observatory, Minamimaki (Japan)

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. 20 refs.

• OSTI ID: 5126260
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 345; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AGE ESTIMATION
BALMER LINES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
COSMIC GASES
EMISSION SPECTRA
FLUIDS
GASES
INTERSTELLAR SPACE
NEBULAE
OXIDES
OXYGEN COMPOUNDS
PLANETARY NEBULAE
SPACE
SPECTRA
STAR EVOLUTION