Periodic light variations of the central star of Abell 35

Details Periodic light variations of the central star of Abell 35 Periodic light variations of the central star of Abell 35

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...189l...7j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 189, no. 1-2, Jan. 1988, p. L7-L9.

Astronomy and Astrophysics

Astrophysics

11

Binary Stars, Light Curve, Planetary Nebulae, Stellar Evolution, Stellar Spectra, Variable Stars, Astronomical Spectroscopy, Radial Velocity, Stellar Mass Accretion, Stellar Mass Ejection, Visible Spectrum

Scientific paper

Photometric and spectroscopic observations of BD-22 deg 3467, the G8 111 central star of the planetary nebula Abell 35, were carried out with the P7 differential photometer of the Geneva Observatory (April to June 1986, and June to July 1987) and the CARELEC spectrograph (December 1986, and March and May 1987) mounted on the Cassegrain focus of the 1.93-m telescope of the Observatoire de Haute Provence. Photometric observations of this source have disclosed the presence of light variations with the periodicity of 0.765 d (or perhaps 0.433 d). Spectroscopic observations made in the visible range showed a faint H-alpha emission line of stellar origin. It is suggested that these findings may be related to mass exchange in a very close binary.

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