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Galactic cannibalism and CDM density profiles | | Carlo Nipoti
; Tommaso Treu
; Luca Ciotti
; Massimo Stiavelli
; | | Date: |
6 Apr 2004 | | Subject: | astro-ph | | Affiliation: | Oxford Univ.), Tommaso Treu (UCLA), Luca Ciotti (Bologna Univ.) and Massimo Stiavelli (STScI | | Abstract: | Using N-body simulations we show that the process of formation of the brightest cluster galaxy through dissipationless galactic cannibalism can affect the inner cluster dark matter density profile. In particular, we use as realistic test case the dynamical evolution of the galaxy cluster C0337-2522 at redshift z=0.59, hosting in its centre a group of five elliptical galaxies which are likely to be the progenitor of a central giant elliptical. After the formation of the brightest cluster galaxy, the inner cluster dark matter density profile is significantly flatter (logarithmic slope 0.49 | | Source: | arXiv, astro-ph/0404127 | | Services: | Forum | Review | PDF | Favorites | |
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