Gas/Star Offsets in Tidal Tails

Details Gas/Star Offsets in Tidal Tails Gas/Star Offsets in Tidal Tails

2000-08-09

arxiv.org/abs/astro-ph/0008153v1

Astronomy and Astrophysics

Astrophysics

2 pages, 1 Postscript figure, uses newpasp.sty. To appear in the conference proceedings of "Gas and Galaxy Evolution"

Scientific paper

We use numerical simulations to study the development of gas/star offsets in the tidal tails of merging galaxies. These offsets are shown to be a natural consequence of the radially extended HI spatial distribution in disk galaxies, coupled with internal dissipation in the gaseous component driven by the interaction. This mechanism explains the observed gas/star offsets in interacting galaxies without invoking interactions with a hot (unseen) gaseous component.

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