Observations of southern Wolf-Rayet stars - I: The spectroscopic binary HD 90657

The Wolf-Rayet star HD 90657 is found to be a spectroscopic binary with a WN5+O6 spectrum and a period of 6.456 days. Preliminary orbital elements show an elliptic orbit and a mass ratio MWR/Mo∼0.5. Evidence is presented for the Wolf-Rayet atmosphere being accelerated outwards and not being spherica...

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Autor principal: Niemela, V.S
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: Kluwer Academic Publishers 1976
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100 1 |a Niemela, V.S. 
245 1 0 |a Observations of southern Wolf-Rayet stars - I: The spectroscopic binary HD 90657 
260 |b Kluwer Academic Publishers  |c 1976 
270 1 0 |m Niemela, V.S.; Instituto de Astronomía y Física del Espacio, Buenos Aires, Argentina 
506 |2 openaire  |e Política editorial 
504 |a Bappu, M.K.V., ‘Wolf-Rayet and High Temperature Stars’ (1973) IAU Symp., 49, p. 59 
504 |a Bertiau, F.C., Grobben, J., (1968) Ricerche Ast., 8, p. 1 
504 |a Cherepaschuk, A.M., (1972) Soviet Astronomy — A.J., 15, p. 955 
504 |a Conti, P.S., Spectroscopic studies of O-type stars. III. The effective temperature scale. (1973) The Astrophysical Journal, 179, p. 181 
504 |a Ganesh, K. S. and Bappu, M. K. V.: 1968, Kodaikanal Observatory Bull. No. 185; Hiltner, W.A., The Wolf-Rayet Spectroscopic Binary HD 214419. (1944) The Astrophysical Journal, 99, p. 273 
504 |a Hiltner, W.A., The Wolf-Rayet Spectroscopic Binaries HD 186943, HD 193928, and HD 211853 (1945) The Astrophysical Journal, 101, p. 356 
504 |a Hutchings, J.B., Expanding Atmospheres in OB Supergiants--I (1968) Monthly Notices of the Royal Astronomical Society, 141, p. 219 
504 |a Hutchings, J.B., Expanding Atmospheres in OB Supergiants--II (1968) Monthly Notices of the Royal Astronomical Society, 141, p. 329 
504 |a Kuhi, L.V., ’Wolf-Rayet and High Temperature Stars’ (1973) IAU Symp., 49, p. 205 
504 |a Kuhi, L. V.: 1968, in K. B. Gebbie and R. N. Thomas (eds.), Wolf-Rayet Stars, N.B.S. Special Publ. No. 307, p. 110; Moore, C.E., (1945) A Multiplet Table of Astrophysical Interest, , U. S. Government Printing Office, Washington, D.C 
504 |a Niemelä, V.S., On the Wolf-Rayet Stars HD 90657 and HD 117688 (1972) Publications of the Astronomical Society of the Pacific, 84, p. 450 
504 |a Niemelä, V.S., The Wolf-Rayet Spectroscopic Binary HD 92740 (1973) Publications of the Astronomical Society of the Pacific, 85, p. 220 
504 |a Niemelä, V. S.: 1974, Ph.D. Thesis, La Plata University; Seggewiss, W., Violet-displaced absorption lines in the spectrum of the Wolf-Rayet star HD 151932 (1974) Publications of the Astronomical Society of the Pacific, 86, p. 670 
504 |a Smith, H. J.: 1955, Ph.D. Thesis, Harvard University; Smith, L.F., A Revised Spectral Classification System and a New Catalogue for Galactic Wolf-Rayet Stars (1968) Monthly Notices of the Royal Astronomical Society, 138, p. 109 
520 3 |a The Wolf-Rayet star HD 90657 is found to be a spectroscopic binary with a WN5+O6 spectrum and a period of 6.456 days. Preliminary orbital elements show an elliptic orbit and a mass ratio MWR/Mo∼0.5. Evidence is presented for the Wolf-Rayet atmosphere being accelerated outwards and not being spherically symmetric. © 1976 D. Reidel Publishing Company.  |l eng 
593 |a Instituto de Astronomía y Física del Espacio, Buenos Aires, Argentina 
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