Outbursts of the recurrent nova T Coronae Borealis

Details Outbursts of the recurrent nova T Coronae Borealis Outbursts of the recurrent nova T Coronae Borealis

Jul 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976natur.262..271w&link_type=abstract

Nature, vol. 262, July 22, 1976, p. 271, 272. NSF-supported research.

Computer Science

50

Binary Stars, Light Curve, Main Sequence Stars, Novae, Stellar Mass, Hydrogen, Nuclear Fusion, Stellar Luminosity, Time Dependence

Scientific paper

The behavior of the recurrent nova T CrB is interpreted in terms of accretion in a binary system. Brightness variations in this system immediately surrounding the 1946 outburst are examined and shown to carry the distinctive signature of an episodic accretion event. The rate of mass loss from the lobe-filling M3 III giant is estimated along with the orbital radius, period, and age of the system. It is suggested that the main-sequence companion is in the stage of core hydrogen burning and that the accretion disk is turbulent. The inferred timescale required for a decline of one magnitude is found to be in excellent agreement with the time required for a theoretical constant-viscosity disk with a natural viscous timescale of 930 days to decline from one magnitude below maximum to two magnitudes below maximum.

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