EFFECTS OF A COMPANION STAR ON SLOW NOVA OUTBURSTS—TRANSITION FROM STATIC TO WIND EVOLUTIONS
EFFECTS OF A COMPANION STAR ON SLOW NOVA OUTBURSTS—TRANSITION FROM STATIC TO WIND EVOLUTIONS
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伴星对慢新星爆发的影响——从静态演化到风演化的转变
DOI:
10.1088/0004-637x/743/2/157
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
I. Hachisu
中科院分区:
文献类型:
--
作者:
M. Kato;I. Hachisu
Two types of nova evolutions can occur in low-mass white dwarfs of ∼0.5–0.7 M☉, i.e., an evolution with optically thick winds like in usual classical novae, or an another type of evolution without them like in the symbiotic nova PU Vul. The latter type is characterized by spectra with no indication of strong winds as well as a long-lasting flat optical peak in its light curve. We propose a transition from evolution with no optically thick wind to usual evolution with optically thick winds as a new outburst model for slow novae that show a relatively long-lasting multipeak phase followed by a wind phase like in the slow novae V723 Cas, HR Del, and V5558 Sgr. We calculated nova envelopes with one-dimensional approximation of the companion's effects and found that when the companion star is deeply embedded in the extended nova envelope, the structure of the static envelope approaches that of the optically thick wind solution. Thus, the transition from static to wind solution is triggered by the effect of the companion. The transition occurs in a close binary nova like V723 Cas, but is not triggered in a long-period binary like PU Vul. We reconfirm our previous results that the frictional energy deposition is negligibly small in almost all hydrogen/helium novae because of the low envelope density at the orbit.
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DOI:
10.1086/508063
发表时间:
2006-07
期刊:
The Astrophysical Journal Supplement Series
影响因子:
--
作者:
I. Hachisu;M. Kato
通讯作者:
I. Hachisu;M. Kato
DOI:
10.1086/517600
发表时间:
2007-02
期刊:
The Astrophysical Journal
影响因子:
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作者:
I. Hachisu;M. Kato
通讯作者:
I. Hachisu;M. Kato
DOI:
--
发表时间:
--
期刊:
影响因子:
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作者:
通讯作者:
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DOI:
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发表时间:
2004
期刊:
The Astrophysical Journal 612
影响因子:
--
作者:
Hachisu;Izumi
通讯作者:
Izumi