Observations of Rapid Blue Variables--X G61-29.
Open Access
- 1 September 1972
- journal article
- research article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 159 (3) , 315-319
- https://doi.org/10.1093/mnras/159.3.315
Abstract
Photoelectric observations of the helium emission line white dwarf G61–29 are presented. The presence of rapid flickering, occasionally with an amplitude ~ 0.20 mag on a time scale ~ 20 s, is established. The light curve contains features resembling that of the binary VV Pup, including effects which can be ascribed to an eclipse by the secondary and obscuration by an optically thick ring. A tentative orbital period of 6h 16m is determined for G61–29. It is suggested that G61–29 resembles the cataclysmic variables, but that helium rather than hydrogen is being transferred between the components of the binary system. Both components are therefore probably the helium cores of evolved stars.Keywords
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