Optical observations of RS Ophiuchi in quiescence

Details Optical observations of RS Ophiuchi in quiescence Optical observations of RS Ophiuchi in quiescence

Oct 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...167...91b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 167, no. 1, Oct. 1986, p. 91-96.

Astronomy and Astrophysics

Astrophysics

13

Cataclysmic Variables, H Alpha Line, Novae, Stellar Spectra, Stellar Spectrophotometry, Absorption Spectra, Line Spectra

Scientific paper

Spectra of the recurrent nova RS Ophiuchi in the years 1979 and 1984 before the recent outburst, and August 1985 after the eruption are discussed. Equivalent width and radial velocities for emission lines have been determined. It is shown that the full width at zero intensity of the H-alpha emission line after the outburst was twice as large as in 1984 and five times larger than in 1979. The spectral type of the late component in the spectrum of RS Oph has been reclassified. Agreement with earlier investigations is found. The absolute magnitude of the red component is estimated to be -0.65 + or 0.45 m, indicating a luminosity class III. The blue component must be 1.1 m brighter. From photometric measurements a slight time shift of the flickering between long and short wavelengths lends support to the stream penetration model of Bath et al. (1983).

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