UV excess and AGB evolution in elliptical-galaxy stellar populations
| dc.creator | Gonzalez-Lopezlira, Rosa A. | |
| dc.creator | Buzzoni, A. | |
| dc.date | 2007-08-01 | |
| dc.date.accessioned | 2026-07-07T08:21:45Z | |
| dc.date.available | 2026-07-07T08:21:45Z | |
| dc.description | The puzzling origin of the ``UV-upturn'' phenomenon, observed in some elliptical galaxies, has recently been settled by identifying hot HB stars as main contributors to galaxy ultraviolet luminosity excess. While a blue HB morphology seems a natural characteristic of metal-poor stellar populations, its appearence in metal-rich systems, often coupled with a poorer rate of planetary nebulae per unit galaxy luminosity, might be calling for an intimate connection between UV excess and AGB properties in early-type galaxies. In this work, we want to briefly assess this issue, relying on infrared surface brightness fluctuations as a powerful tool to trace AGB properties in external galaxies with unresolved stellar populations. | |
| dc.description | 6 pages, LaTeX, 4 figures, uses svmult.cls. To appear in``Ultraviolet properties of evolved stellar populations", ed. M. Chavez, E. Bertone, D. Rosa-Gonzalez, and L.H. Rodriguez-Merino, Astrophysics and Space Science Proceedings (Dordrecht:Springer), in press | |
| dc.identifier | https://arxiv.org/abs/0708.0193 | |
| dc.identifier | http://arxiv.org/abs/0708.0193 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/135421 | |
| dc.subject | Astrophysics | |
| dc.title | UV excess and AGB evolution in elliptical-galaxy stellar populations | |
| dc.type | text |