WZ Sagittae - an old dwarf nova
文献类型：期刊论文
| 作者 | Meyer-Hofmeister, E1; Meyer, F1; Liu BF(刘碧芳)2
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| 刊名 | ASTRONOMY & ASTROPHYSICS
 |
| 出版日期 | 1998-11 |
| 卷号 | 339期号:2页码:507-517 |
| ISSN号 | 0004-6361 |
| 关键词 | accretion disks cataclysmic variables stars : individual : WZ Sge X-rays : stars stars : coronae |
| 通讯作者 | Meyer-Hofmeister, E |
| 产权排序 | 第二完成单位 |
| 英文摘要 | 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. |
| 学科主题 | Astronomy & Astrophysics |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DISK BOUNDARY-LAYERS ; X-RAY-EMISSION ; CATACLYSMIC VARIABLES ; ACCRETION DISK ; WHITE-DWARF ; OUTBURSTS ; MODEL ; SGE ; EVAPORATION ; SUPERHUMPS |
| 收录类别 | SCI |
| 原文出处 | http://adsabs.harvard.edu/abs/1998A%26A...339..507M |
| 语种 | 英语 |
| WOS记录号 | WOS:000077014200025 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/4925]  |
| 专题 | 云南天文台_高能天体物理研究组 |
| 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. |
入库方式： OAI收割
来源：云南天文台
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