Orbital period and qualitative model for the Exnova RR Pictoris

Details Orbital period and qualitative model for the Exnova RR Pictoris Orbital period and qualitative model for the Exnova RR Pictoris

Jun 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975a%26a....41...15v&link_type=abstract

Astronomy and Astrophysics, vol. 41, no. 1, June 1975, p. 15-20.

Astronomy and Astrophysics

Astronomy

23

Astronomical Models, Eclipsing Binary Stars, Novae, Orbital Elements, Stellar Spectrophotometry, Ubv Spectra, Color, Electrophotometry, Light Curve, Spaceborne Astronomy, Stellar Motions

Scientific paper

New photoelectric observations of RR Pic in UBV and integrated light, combined with previously published data, yield a precise value of the orbital period. Light curves and color variations as a function of orbital phase are discussed. The spectrum of RR Pic shows a strong continuum and mostly weak emission lines of H, He II and C III. A qualitative model of a close binary with an extended hot area on a gas disc surrounding the blue component is suggested. The gas disc seems to suffer a partial eclipse by the red, cool companion. This interpretation is also supported by UV photometry carried out with the OAO-2.

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