| Author(s): | Korchagin, V., Tsuchiya, T., Miyama, S.M. |
| Title: | On the origin of faint intracluster starlight in Coma |
| Source: | Astrophys. J. 549, 244-247 |
| Year: | 2001 |
| Abstract: | Using N-body numerical simulations, we examine possible mechanisms for the origin of the intracluster starlight features recently discovered in the Coma cluster of galaxies. We show that tidal interactions of a ``normal'' elliptical galaxy with a symmetrically distributed dark matter potential do not produce the observed intracluster starlight features. A head-on collision of two normal ellipticals does, however, explain the origin of the intracluster features with surface brightness about 26 mag/arcsec^2). Another possible explanation for the intracluster starlight features is galactic tidal interactions with massive intracluster substructures. The presence of substructures in Coma with a density of ~0.1 times the density in the center of the galaxy, and with a total mass about three orders of magnitude larger than the mass of a normal elliptical galaxy, would account for the observations. |
| Preprint issued: | |
| Remarks: |
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Letzte Änderung/Updated: 02.07.2004