The Tully-Fisher relation and its evolution with redshift in cosmological simulations of disc galaxy formation
| dc.creator | Portinari, Laura | |
| dc.creator | Sommer-Larsen, Jesper | |
| dc.date | 2006-06-21 | |
| dc.date | 2006-11-29 | |
| dc.date.accessioned | 2026-07-07T10:23:13Z | |
| dc.date.available | 2026-07-07T10:23:13Z | |
| dc.description | We present predictions on the evolution of the Tully-Fisher (TF) relation with redshift, based on cosmological N-body/hydrodynamical simulations of disc galaxy formation and evolution. The simulations invoke star formation and stellar feedback, chemical evolution with non-instantaneous recycling, metallicity dependent radiative cooling and effects of a meta-galactic UV field, including simplified radiative transfer. At z=0, the simulated and empirical TF relations are offset by about 0.4 magnitudes (1 sigma) in the B and I bands. The origin of these offsets is somewhat unclear, but it may not necessarily be a problem of the simulations only. As to evolution, we find a brightening of the TF relation between z=0 and z=1 of about 0.85 mag in rest-frame B band, with a non-evolving slope. The brightening we predict is intermediate between the (still quite discrepant) observational estimates. This evolution is primarily a luminosity effect, while the stellar mass TF relation shows negligible evolution. The individual galaxies do gain stellar mass between z=1 and z=0, by a 50-100%; but they also correspondingly increase their characteristic circular speed. As a consequence, individually they mainly evolve ALONG the stellar mass TF relation, while the relation as such does not show any significant evolution. | |
| dc.description | 14 pages, 6 figures; minor revisions and added references; version accepted for publication on MNRAS. Fig. 1,2,3,4 available also in colour version from the source files | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0606531 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0606531 | |
| dc.identifier | Mon.Not.Roy.Astron.Soc.375:913-924,2007 | |
| dc.identifier | doi:10.1111/j.1365-2966.2006.11348.x | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/175749 | |
| dc.subject | Astrophysics | |
| dc.title | The Tully-Fisher relation and its evolution with redshift in cosmological simulations of disc galaxy formation | |
| dc.type | text |