Bibcode
Eliche-Moral, M. C.; González-García, A. C.; Balcells, M.; Aguerri, J. A. L.; Gallego, J.; Zamorano, J.
Bibliographical reference
Formation and Evolution of Galaxy Disks ASP Conference Series, Vol. 396, Proceedings of the conference held 1-5 October, 2007 at the Centro Convegni Matteo Ricci, Rome, Italy. Edited by José G. Funes, S.J., and Enrico Maria Corsini. San Francisco: Astronomical Society of the Pacific, 2008., p.359
Advertised on:
10
2008
Citations
3
Refereed citations
3
Description
Satellite accretion events have been invoked for mimicking the internal
secular evolutionary processes of bulge growth tep{Kormendy04}. In
order to investigate this question, we perform N-body models of the
accretion of satellites onto disk galaxies. A scaling between the
primary and the satellite based on the Tully-Fisher relation ensures
that the density ratios, critical to the outcome of the accretion, are
realistic. Both the bulge-to-disk ratio and the Sérsic index of
the remnant bulge increase as a result of the accretion. The dominant
mechanism for bulge growth is the inward flow of material from the
primary disk to the bulge region during the satellite decay. The models
confirm that the growth of the bulge out of disk material, a central
ingredient of secular evolution models, may be triggered externally
through satellite accretion. This work is described in more detail in
tet{Eliche06}.
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Casiana
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