IUE and TIRGO observations of the symbiotic star HBV 475.

Vogel, M.; Nussbaumer, H.

Switzerland

Abstract

IUE has observed the symbiotic star HBV 475 since 1979, and the TIRGO long-term IR survey has done so since 1986. The star displays a strikingly regular periodic variation in the fluxes of the emission lines and of their wavelength positions. Observational results are presented in conjunction with an outline of the spectroscopic evolution of this symbiotic nova. The physical characteristics of the system are derived.

1991 Astronomy and Astrophysics
IUE 8