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 |
|---|---|
| Journal | Astrophysical Journal |
| Volume | 517 |
| Issue number | 1 PART 2 |
| Publication status | Published - 1999 May 20 |
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Keywords
- Accretion, accretion disks
- Binaries: close
- Binaries: symbiotic
- Novae, cataclysmic variables
- Stars: individual (T Coronae Borealis)
ASJC Scopus subject areas
- Space and Planetary Science
Cite this
A new interpretation for the second peak of T Coronae Borealis outbursts : A tilting disk around a very massive white dwarf. / Hachisu, Izumi; Kato, Mariko.
In: Astrophysical Journal, Vol. 517, No. 1 PART 2, 20.05.1999.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A new interpretation for the second peak of T Coronae Borealis outbursts
T2 - A tilting disk around a very massive white dwarf
AU - Hachisu, Izumi
AU - Kato, Mariko
PY - 1999/5/20
Y1 - 1999/5/20
N2 - 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.
AB - 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.
KW - Accretion, accretion disks
KW - Binaries: close
KW - Binaries: symbiotic
KW - Novae, cataclysmic variables
KW - Stars: individual (T Coronae Borealis)
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UR - http://www.scopus.com/inward/citedby.url?scp=0033586822&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0033586822
VL - 517
JO - Astrophysical Journal
JF - Astrophysical Journal
SN - 0004-637X
IS - 1 PART 2
ER -