Ring-shaped nebulae around FU Orionis stars
Journal Article
·
· Publ. Astron. Soc. Pac.; (United States)
Observational data on the morphology and spectra of the nebulae surrounding V1057 Cyg, V1515 Cyg, and V1735 Cyg stars are presented and studied. The data reveal that V1735 Cyg is more highly reddened than the nebula and the spectra of all three nebulae are from reflection. A simple model for the dust shell is proposed and it is argued that the shells may indicate a relatively advanced evolutionary state for the FU Orionis star. The relation between the shells and the evolution of the stars is examined. The models of Herbig (1977), Mould et al. (1978), Larson (1980), and Hartmann and Kenyon (1985), which are utilized to analyze the FU Orionis outburst phenomenon, are tested. 23 references.
- Research Organization:
- Lick Observatory, Santa Cruz, CA
- OSTI ID:
- 6270263
- Journal Information:
- Publ. Astron. Soc. Pac.; (United States), Vol. 99
- Country of Publication:
- United States
- Language:
- English
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