WZ Sagittae - an old dwarf nova

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	WZ Sagittae - an old dwarf nova
	Meyer-Hofmeister, E 1; Meyer, F 1; Liu BF(刘碧芳)2
发表期刊	ASTRONOMY & ASTROPHYSICS
	1998-11
卷号	339 期号:2 页码:507-517
产权排序	第2完成单位
收录类别	SCI
关键词	Accretion Disks Cataclysmic Variables Stars : Individual : Wz Sge X-rays : Stars Stars : Coronae
摘要	We model the evolution of the accretion disk of WZ Sagittae during the long quiescence. We find that the large amount of mass in the disk derived from the outburst luminosity is a severe constraint and demands values of alpha(c) approximate to 0.001 in contradiction to some recent suggestions. We include in our computations the formation of an inner disk hole and the growth of the disk due to redistribution of angular momentum. We find a new mode of disk evolution. The disk is quasi-stationary. Only about half of the mass transfered from the companion star flows through the disk, the other half is needed to build up the steadily growing outer disk. When the 3:1 resonance radius is reached the disk growth ends. From then on all transferred matter flows inward, the surface density increases, leading to an outburst within a few years. We predict superhumps at low luminosity during this last phase. We discuss X-rays expected, the white dwarf mass and distance to WZ Sagittae.
语种	英语
学科领域	Astronomy & Astrophysics
文章类型	Article
ISSN	0004-6361
URL	查看原文
WOS记录号	WOS:000077014200025
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	DISK BOUNDARY-LAYERS ; X-RAY-EMISSION ; CATACLYSMIC VARIABLES ; ACCRETION DISK ; WHITE-DWARF ; OUTBURSTS ; MODEL ; SGE ; EVAPORATION ; SUPERHUMPS
引用统计	被引频次：38[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ynao.ac.cn/handle/114a53/4925
专题	高能天体物理研究组
通讯作者	Meyer-Hofmeister, E
作者单位	1.Max-Planck-Institut fur Astrophysik, Karl-Schwarzschildstrasse 1, D-85740 Garching, Germany 2.Yunnan Observatory, Academia Sinica. P.O.Box 110, Kunming 650011, P.R. China
推荐引用方式 GB/T 7714	Meyer-Hofmeister, E,Meyer, F,Liu BF. WZ Sagittae - an old dwarf nova[J]. ASTRONOMY & ASTROPHYSICS,1998,339(2):507-517.
APA	Meyer-Hofmeister, E,Meyer, F,&Liu BF.(1998).WZ Sagittae - an old dwarf nova.ASTRONOMY & ASTROPHYSICS,339(2),507-517.
MLA	Meyer-Hofmeister, E,et al."WZ Sagittae - an old dwarf nova".ASTRONOMY & ASTROPHYSICS 339.2(1998):507-517.

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