Observations of some early-type supergiants with variable H$alpha$ profiles
Journal Article
·
· Astrophys. J., v. 182, no. 2, pp. 523-530
OSTI ID:4344195
Study of multiple high-dispersion H alpha spectrograms of 20 early-type supergiants indicates that 13 of these stars showed large, visually evident changes in the strength or structure of the H alpha as well as in the strength of other prominent lines in the red region of the spectrum. These stars should be suitable candidates for investigating possible coupling between maas loss and turbulence. Techniques previously used for studying this problem can be extended to earlier spectral types by 1, and C II lines lambda lambda 6578, 6582 and the He I lines lambda lambda 5876, 6678 as turbulence indicators. (auth)
- Research Organization:
- Steward Observatory, University of Arizona, Tucson
- NSA Number:
- NSA-29-021830
- OSTI ID:
- 4344195
- Journal Information:
- Astrophys. J., v. 182, no. 2, pp. 523-530, Journal Name: Astrophys. J., v. 182, no. 2, pp. 523-530; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
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