منابع مشابه
Dynamic Tidal Alignment of Cluster Galaxies
We investigate the role of parametric tidal interactions between cluster galaxies and the cluster potential by considering galaxy and cluster dynamical properties and drawing an analogy between these systems and the Milky Way-dSph system. We suggest that some cluster galaxies are indeed undergoing resonant excitation and argue that this will cause a tendency for alignment of the galaxies’ long ...
متن کاملFrom Tidal Dwarf Galaxies to Satellite Galaxies
The current popular cosmological models have granted to the population of dwarf satellite galaxies a key role: their number, location and masses constrain both the distribution of dark matter and the physical evolution of their hosts. In the past years, there has been increasing observational evidence that objects with masses of dwarf galaxies can form in the tidal tails of colliding galaxies a...
متن کاملThe early evolution of tidal dwarf galaxies
Context. Dwarf galaxies can arise from self-gravitating structures emerging from tidal tails. What fraction of the known dwarf galaxies in the Local Universe can have this origin is still a matter of debate. Aims. In our effort to understand the origin and evolution of tidal dwarf galaxies and their correspondence with local objects, the first step is to understand how these galaxies (which are...
متن کاملTidal Effects in Clusters of Galaxies
High-redshift clusters of galaxies show an over-abundance of spirals by a factor of 2 − 3, and the corresponding under-abundance of S0 galaxies, relative to the nearby clusters. This morphological evolution can be explained by tidal interactions with neighboring galaxies and with the hierarchically growing cluster halo. The efficiency of tidal interactions depends on the size and structure of t...
متن کاملRadial Alignment of Cluster Galaxies
We report the discovery of a statistically significant radial alignment of cluster galaxies in a sample of 85 X-ray selected clusters observed in the Sloan Digital Sky Survey. The tendency for alignment is a robust feature of our sample and does not vary significantly with individual cluster or galaxy properties. We use dynamical arguments to show that a significant fraction of cluster galaxies...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Cosmology and Astroparticle Physics
سال: 2015
ISSN: 1475-7516
DOI: 10.1088/1475-7516/2015/08/015