Old stellar counter-rotating components in elliptical-spiral mergers: exploring the GalMer database

Details Old stellar counter-rotating components in elliptical-spiral mergers: exploring the GalMer database Old stellar counter-rotating components in elliptical-spiral mergers: exploring the GalMer database

2007-11-23

arxiv.org/abs/0711.3693v1

Astronomy and Astrophysics

Astrophysics

2 pages, 2 figures. To appear in the proceedings of "Formation and Evolution of Galaxy Disks" (J. G. Funes, and E. M. Corsini

Scientific paper

We investigate, by means of numerical simulations, the kinematics of elliptical-spiral merger remnants. Counterrotation can appear both in coplanar and in non-coplanar retrograde mergers, and it is mostly associated to the presence of a disk component, which preserves part of its initial spin. In turn, the external regions of the two interacting galaxies acquire part of the orbital angular momentum, due to the action of tidal forces.

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