The Central kpc of Galaxy Bulges
| dc.creator | Balcells, M. | |
| dc.date | 2001-06-22 | |
| dc.date.accessioned | 2026-07-07T01:59:02Z | |
| dc.date.available | 2026-07-07T01:59:02Z | |
| dc.description | We study the innermost regions of bulges with surface brightness data derived from combined HST/NICMOS and ground-based NIR profiles. Bulge profiles to 1-2 kpc may be fit with Sersic laws, and show a trend with bulge-to-disk ratio: low-B/D bulges are roughly exponential, whereas higher-B/D bulges show increasing Sersic shape index $n$, indicating higher peak central densities and more extended brightness tails. N-body models of accretion of satellites onto disk-bulge-halo galaxies show that satellite accretion contributes to the increase of the shape index $n$ as the bulge grows by accretion. The N-body results demonstrate that exponential profiles are fragile to merging, hence bulges with exponential surface brightness profiles cannot have experienced significant growth by accretion of dense satellites. | |
| dc.description | 6 pages, 3 figures. Contributed paper to "The Central kpc of Starbursts and AGN: the La Palma connection'', Eds. J.H. Knapen, J.E. Beckman, I. Shlosman and T.J. Mahoney, ASP conf. series, in press (2001) | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0106411 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0106411 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/2950 | |
| dc.subject | Astrophysics | |
| dc.title | The Central kpc of Galaxy Bulges | |
| dc.type | text |