RT Book, Section
T1 Secular Evolution of Bulges Induced by Satellite Accretion
A1 Eliche Moral, María del Carmen
A1 González García, A. C.
A1 Balcells, M.
A1 Aguerri, J. A. L.
A1 Gallego Maestro, Jesús
A1 Zamorano Calvo, Jaime
AB Satellite accretion events have been invoked for mimicking the internal secular evolutionary processes of bulge growth (Kormendy & Kennicutt 2004). 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 Sersic 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 Eliche-Moral et al. (2006).
PB Astronomical Society of the Pacific
SN 978-1-58381-662-2
YR 2008
FD 2008
LK https://hdl.handle.net/20.500.14352/53475
UL https://hdl.handle.net/20.500.14352/53475
LA eng
NO Aguerri, J. A. L., Balcells, M., & Peletier, R.F. 2001, A&A, 367, 428 (A01)Andredakis, Y. C., Peletier, R. F. & Balcells, M. 1995, MNRAS, 275, 874Balcells, M., Graham, A. W., & Peletier, R. F. 2007, ApJ, 665, 1104Eliche Moral, M. C., et al. 2006, A&A, 457, 91Graham, A. 2001, AJ, 121, 820Hernquist, L. 1990, J. Computat. Phys., 87, 137Kormendy, J., & Kennicutt, R. C. 2004, ARA&A, 42, 603Kuijken, K., & Dubinski, J. 1995, MNRAS, 277, 1341
NO © Astronomical Society of the Pacific.International Conference on Formation and Evolution of Galaxy Disks (2007. Rome, Italy).
DS Docta Complutense
RD 16 jul 2024