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Variability of HBV 475 in the near infrared

Published online by Cambridge University Press:  12 April 2016

Y. Andrillat
Y. Andrillat*
Affiliation:
Observatoire de Haute Provence, 04870 St Michel l'Observatoire (France)

Extract

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In the spectral range λλ5800-8750, HBV 475 shows important spectral variations between 1969 and 1974. Sometimes the “hot component” spectrum dominates (many emission lines), sometimes the “cool component” is preponderent (many molecular absorption Ti0 bands) (Andrillat 1973 – Andrillat, Houziaux 1976).

On August 4 1974, June 6 1975 and August 9 1981, we have extended the observations up to l.lμ (fig.l) (Haute Provence Observatory 193 Telescope – Spectro ROUCAS + Image tube – dispersion 230 A.mm-1).

Type
Session II – Discussion on Individual Stars
Information
International Astronomical Union Colloquium , Volume 70: The Nature of Symbiotic Stars , 1982 , pp. 173 - 174
Copyright
Copyright © Reidel 1982

References

Andrillat, Y. : 1973, Mém. Soc .Roy. Sci .Liège, T.5, 371. Google Scholar
Andrillat, Y., Houziaux, L.: 1976, Astron. Astrophys. 52, 119. Google Scholar
Andrillat, Y., Vreux, J.M., Dennefeld, M.: 1982, IAU Symp. 99 (forthcoming).Google Scholar