Ram-Ppressure Effects on Dense Molecular Arms in the Central Regions of Spiral Galaxies by Intracluster Medium

Makoto Hidaka; Yoshiaki Sofue

doi:10.1093/pasj/54.1.33

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arXiv · astro-ph/0201103

Ram-Ppressure Effects on Dense Molecular Arms in the Central Regions of Spiral Galaxies by Intracluster Medium

Makoto Hidaka·Yoshiaki Sofue

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Abstract

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.

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Makoto Hidaka, Yoshiaki Sofue. 2002-01-08. Ram-Ppressure Effects on Dense Molecular Arms in the Central Regions of Spiral Galaxies by Intracluster Medium. https://doi.org/10.1093/pasj%2F54.1.33

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