Abstract
A new interpretation for the second peak of T Coronae Borealis outbursts is proposed based on a thermonuclear runaway (TNR) model. The system consists of a very massive white dwarf (WD) with a tilting accretion disk and a lobe-filling red giant. The first peak of the visual light curve of T CrB outbursts is well reproduced by the TNR model on a WD close to the Chandrasekhar mass (MWD ≳ 1-35 M⊙), while the second peak is reproduced by the combination of the irradiated M giant and the irradiated tilting disk. The derived fitting parameters are the WD mass MWD ∼ 1.35 M⊙, the M giant companion mass MRG ∼ 0.7 M⊙ (0.6-1.0 M⊙ is acceptable), the inclination angle of the orbit i ∼ 70°, and the tilting angle of the disk iprec ∼ 35°. These parameters are consistent with the recently derived binary parameters of T CrB.
Original language | English |
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Pages (from-to) | L47-L50 |
Journal | Astrophysical Journal |
Volume | 517 |
Issue number | 1 PART 2 |
DOIs | |
Publication status | Published - 1999 May 20 |
Keywords
- Accretion, accretion disks
- Binaries: close
- Binaries: symbiotic
- Novae, cataclysmic variables
- Stars: individual (T Coronae Borealis)
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science