THE ORIGIN OF NEUTRAL HYDROGEN CLOUDS IN NEARBY GALAXY GROUPS: EXPLORING THE RANGE OF GALAXY INTERACTIONS
THE ORIGIN OF NEUTRAL HYDROGEN CLOUDS IN NEARBY GALAXY GROUPS: EXPLORING THE RANGE OF GALAXY INTERACTIONS
复制标题
附近星系团中中性氢云的起源:探索星系相互作用的范围
DOI:
10.1088/0004-6256/142/4/137
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发表时间:
2011
期刊:
影响因子:
--
通讯作者:
G. Langston
中科院分区:
文献类型:
--
作者:
K. Chynoweth;K. Holley;E. Polisensky;G. Langston
We combine high-resolution N-body simulations with deep observations of neutral hydrogen (H i) in nearby galaxy groups in order to explore two well-known theories of H i cloud formation: H i stripping by galaxy interactions and dark-matter minihalos with embedded H i gas. This paper presents new data from three galaxy groups—Canes Venatici I, NGC 672, and NGC 45—and assembles data from our previous galaxy group campaign to generate a rich H i cloud archive to compare to our simulated data. We find no H i clouds in the Canes Venatici I, NGC 672, or NGC 45 galaxy groups. We conclude that H i clouds in our detection space are most likely to be generated through recent, strong galaxy interactions. We find no evidence of H i clouds associated with dark-matter halos above MH i ∼ 106 M☉, within ±700 km s−1 of galaxies, and within 50 kpc projected distance of galaxies.
DOI:
10.1086/425155
发表时间:
2004-06
期刊:
The Astrophysical Journal
影响因子:
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作者:
M. Fukugita
通讯作者:
M. Fukugita