Encounters between spherical galaxies - II. Systems with a dark halo

A. C. Gonzalez-Garcia, T. S. van Albada

OnderzoeksoutputAcademicpeer review

26 Citaten (Scopus)
179 Downloads (Pure)


We perform N-body simulations of encounters between spherical systems surrounded by a spherical halo. Following a preceding paper with a similar aim, the initial systems include a spherical Jaffe model for the luminous matter and a Hernquist model for the halo. The merger remnants from this sample are mainly slowly rotating, prolate spheroids with a radially anisotropic velocity distribution. The results are compared with real-life ellipticals and with the models without halo in Paper I. We argue that elliptical galaxies with evidence of dark matter could be formed in the field via a merger of spheroids surrounded by a dark matter halo, while ellipticals with no evidence of dark matter might be formed via a merger of two spheroids in a cluster.

Originele taal-2English
Pagina's (van-tot)1043-1054
Aantal pagina's12
TijdschriftMonthly Notices of the Royal Astronomical Society
Nummer van het tijdschrift3
StatusPublished - 11-aug.-2005

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