منابع مشابه
Searching for tidal tails - investigating galaxy harassment
Galaxy harassment has been proposed as a physical process that morphologically transforms low surface density disc galaxies into dwarf elliptical galaxies in clusters. It has been used to link the observed very different morphology of distant cluster galaxies (relatively more blue galaxies with ’disturbed’ morphologies) with the relatively large numbers of dwarf elliptical galaxies found in nea...
متن کاملA Spatial Characterization of the Sagittarius Dwarf Galaxy Tidal Tails
We measure the spatial density of F turnoff stars in the Sagittarius dwarf tidal stream, from Sloan Digital Sky Survey (SDSS) data, using statistical photometric parallax. We find a set of continuous, consistent parameters that describe the leading Sgr stream’s position, direction, and width for 15 stripes in the North Galactic Cap, and 3 stripes in the South Galactic Cap. We produce a catalog ...
متن کاملTidal Tails of Star Clusters
Based on recent findings of a formation mechanism of substructure in tidal tails by Küpper, Macleod & Heggie (2008) we investigate a more comprehensive set of N -body models of star clusters on orbits about a Milky-Way-like potential. We find that the predicted epicyclic overdensities arise in any tidal tail no matter which orbit the cluster follows as long as the cluster lives long enough for ...
متن کاملTidal tails in CDM cosmologies
We study the formation of tidal tails in pairs of merging disk galaxies with structural properties motivated by current theories of cold dark matter (CDM) cosmologies. In a recent study, Dubinski, Mihos & Hernquist (1996) showed that the formation of prominent tidal tails can be strongly suppressed by massive and extended dark haloes. For the large halo-to-disk mass ratio expected in CDM cosmol...
متن کاملConstraining Dark Halo Potentials with Tidal Tails
We present an extensive parameter survey to study the influence of halo mass profiles on the development of tidal tails in interacting disk galaxies. We model the galaxies using a fixed exponential disk with a central bulge and vary the halo potential over a range of parameters using both the Hernquist and NFW mass distributions, probing the effect of the halo mass, extent and concentration. We...
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ژورنال
عنوان ژورنال: Astronomical & Astrophysical Transactions
سال: 2001
ISSN: 1055-6796,1476-3540
DOI: 10.1080/10556790108208195