Binary satellite galaxies
Evslin, J
刊名MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
2014
卷号440期号:2页码:1225-1232
关键词galaxies: dwarf galaxies: kinematics and dynamics Local Group
学科分类Astronomy & Astrophysics
DOI10.1093/mnras/stu340
英文摘要Suggestions have appeared in the literature that the following four pairs of Milky Way and Andromeda satellite galaxies are gravitationally bound: Draco and Ursa Minor, Leo IV and V, Andromeda I and III, and NGC 147 and 185. Assuming that a given pair is gravitationally bound, the Virial theorem provides a crude estimate of its total mass and so its instantaneous tidal radius. In the case of each pair except for Leo IV and Leo V, the estimated tidal radius is inferior to the separation between the two satellites, suggesting that these pairs are not currently gravitationally bound. Their proximities may be explained if each pair condensed from the remnants of a formerly gravitationally bound structure, but such a scenario is in tension with the absence of older pairs with a wider separation.
收录类别SCI
WOS记录号WOS:000334742200022
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225190
专题中国科学院高能物理研究所_理论物理室_期刊论文
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Evslin, J. Binary satellite galaxies[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,440(2):1225-1232.
APA Evslin, J.(2014).Binary satellite galaxies.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,440(2),1225-1232.
MLA Evslin, J."Binary satellite galaxies".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 440.2(2014):1225-1232.
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