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Activity in the Envelope of the G-type Hypergiant HD 217476

Published online by Cambridge University Press:  04 August 2017

J. Smoliński ,
J.L. Climenhaga  and
J.M. Fletcher
J. Smoliński
Affiliation:
Copernicus Astronomical Center, Toruń, Poland
J.L. Climenhaga
Affiliation:
Department of Physics, University of Victoria, Victoria, Canada
J.M. Fletcher
Affiliation:
Dominion Astrophysical Observatory, Victoria, Canada

Extract

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Yellow hypergiant, HD 217476, (HR 8752) is known to have extensive circumstellar envelope. Its unusual spectrum makes it enigmatic object. On the H-R diagram this hypergiant lies among the most luminous stars known in six Local Group galaxies (Humphreys et al., 1984). We have observed it with the same equipment during last fifteen years at the Dominion Astrophysical Observatory. Our present results arg based upon several hundreds of high dispersion spectra (6 and 10 Å/mm).

Type
Poster Papers - Sessions 1 and 2
Information
Symposium - International Astronomical Union , Volume 116: Luminous Stars and Associations in Galaxies , 1986 , pp. 89 - 90
Copyright
Copyright © Reidel 1986 

References

Humphreys, R.M., Blaha, C., D'Odorico, S., Gull, T.R., Benvenuti, P., 1984, Astrophys. J., 278, pp. 124–136 CrossRefGoogle Scholar
Sargent, W.L.W., 1965, Observatory, 85, pp. 33–35 Google Scholar
Smoliński, J., Feldman, P.A., Higgs, L.A., 1977, Astron. Astrophys., 60, pp. 277–280 Google Scholar
Stickland, D.J., Harmer, D.L., 1978, Astron. Astrophys., 70, pp. L53–L56 Google Scholar