The effects of cluster tides on disk galaxies.

Details The effects of cluster tides on disk galaxies. The effects of cluster tides on disk galaxies.

Dec 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997apl%26c..36..291g&link_type=abstract

Astrophysical Letters and Communications, Vol. 36, Nos. 1 - 6, p. 291 - 294

Mathematics

Logic

Clusters Of Galaxies: Tidal Interactions, Clusters Of Galaxies: Dynamical Evolution, Clusters Of Galaxies: N-Body Simulations, Clusters Of Galaxies: Disk Galaxies

Scientific paper

The authors investigate the dynamical behaviour of disk galaxies orbiting within the potential well of a galaxy cluster. They focus on the morphological changes induced on halo + bulge + disk N-body galaxy models by cluster tides, as well as on possible modifications to the shape of their rotation curves. Galaxy clusters are modelled as spherical potential wells whose mass distribution is either static or evolves slowly in accordance with a simple infall model. The authors find that galaxies can be totally disrupted if they are on nearly radial orbits or if they are accreted into the cluster at high redshift, when clusters are denser. Less dramatic effects are seen for galaxies on less eccentric orbits or accreted into the cluster at low redshift, although in many cases tides can lead to a significant rearrangement of the mass of the halo, a thickening of the disk, and a declining rotation curve.

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