Helium-rich hot subdwarfs and single low-mass white dwarfs: formation mechanisms and further implications
Helium-rich hot subdwarfs and single low-mass white dwarfs: formation mechanisms and further implications
复制标题
富氦热亚矮星和单个低质量白矮星:形成机制和进一步影响
DOI:
10.1007/s10509-010-0341-y
复制
发表时间:
2010-03
影响因子:
1.9
通讯作者:
Wolf, Christian
中科院分区:
文献类型:
--
作者:
Justham, Stephen;Podsiadlowski, Philipp;Han, Zhanwen;Wolf, Christian
Variations in the mass loss from single stars have been used to explain the existence of hot subdwarf stars and the existence of single low-mass white dwarfs (LMWDs). Hence remaining uncertainty in mass loss from single red-giant stars is important to the understanding of these problems. However, natural formation channels for hot subdwarfs and single LMWDs have also been proposed which do not rely on unexplained mass loss from single red-giant stars. We outline these, and discuss how the different mechanisms could be distinguished. For example, a formation channel for single LMWDs which involves the break-up of a binary system by a type Ia supernova should produce a population of single LMWDs with a distinct kinematic signature. If that population is found to exist, it could be used to study one of the popular single-degenerate formation channels for type Ia supernovae in a previously impossible way. In addition, we examine the formation of helium-rich sdO stars—which are shown to emerge from one of the previously existing binary formation channels for hot subdwarfs. Both the SN Ia formation mechanism for single LMWDs and the formation channel for He-sdOs are a natural consequence of existing models. Hence if these formation channels do not work at all, then the result is a significant one.
登录
查看更多内容
影响因子:
6.5
作者:
韩占文;孟祥存;陈雪飞
通讯作者:
陈雪飞
DOI:
10.1046/j.1365-8711.2002.05752.x
发表时间:
2002-06
影响因子:
4.8
作者:
Zhanwen Han;P. Podsiadlowski;P. Maxted;T. Marsh;N. Ivanova
通讯作者:
Zhanwen Han;P. Podsiadlowski;P. Maxted;T. Marsh;N. Ivanova
DOI:
10.1086/304498
发表时间:
1997-05
期刊:
The Astrophysical Journal
影响因子:
--
作者:
S. Yi;P. Demarque;Augustus Oemler, Jr.
通讯作者:
S. Yi;P. Demarque;Augustus Oemler, Jr.
DOI:
10.1086/343795
发表时间:
2002-07
期刊:
The Astrophysical Journal
影响因子:
--
作者:
P. Bergeron;S. Leggett
通讯作者:
P. Bergeron;S. Leggett
影响因子:
1.9
作者:
Bo Wang;Zhanwen Han
通讯作者:
Bo Wang;Zhanwen Han