Ram-Pressure Effects on Dense Molecular Arms in the Central Regions of Spiral Galaxies by Intracluster Medium
Ram-Pressure Effects on Dense Molecular Arms in the Central Regions of Spiral Galaxies by Intracluster Medium
复制标题
星团内介质对螺旋星系中心区域致密分子臂的冲压压力效应
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
Y. Sofue
中科院分区：
文献类型：
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作者：
M. Hidaka;Y. Sofue
通过流体动力学模拟研究了星系团内风对螺旋星系内盘的冲击压力效应。即使风是温和的，没有强大到足以剥离气体盘，闸板的压力也会显著扰乱臂间气体的轨道。这就导致了星系内部几kpc区域的不对称致密分子臂。这一机制可以解释室女座旋涡中心区域不对称的CO气体分布。
We investigated ram-pressure effects by an intracluster wind on an inner disk of spiral galaxies by a hydrodynamical simulation. Even if the wind is mild and not strong enough to strip the gas disk, the ram pressure disturbs orbits of the inter-arm gas significantly. This results in asymmetric dense molecular arms in the inner few kpc region of a galaxy. This mechanism would explain the asymmetric CO gas distributions in the central regions often observed in Virgo spirals.