TY  - GEN 
AU  - Pérez, Isabel
AU  - Aguerri, J. A. L.
AU  - Méndez-Abreu, J.
PY  - 2012
SN  - 0004-6361
SN  - 1432-0746
UR  - http://hdl.handle.net/10481/28431
AB  - Context. The tumbling pattern of a bar is the main parameter characterising its dynamics. From numerical simulations, its evolution since bar formation is tightly linked to the dark halo in which the bar is formed through dynamical friction and...
AB  - Aims. We aim to determine for the first time the bar pattern speed evolution with redshift based on morphological measurements.
AB  - Methods. We have selected a sample of 44 low-inclination ringed galaxies from the SDSS and COSMOS surveys covering the redshift range 0 < z < 0.8 to investigate the evolution of the bar pattern speed. We derived morphological ratios between the...
AB  - Results. We obtain a similar distribution of R at all redshifts. We do not find any systematic effect that could be forcing this result.
AB  - Conclusions. The results obtained here are compatible with the main bulk of the bar population (~70%) being fast-rotators and with no evolution of the pattern speed with redshift. We argue that if bars are long-lasting structures, the results...
LA  - eng
PB  - European Southern Observatory (ESO); Springer Verlag
KW  - Galaxies
KW  - High redshift
KW  - Evolution
KW  - Structure
KW  - Kinematics and dynamics
TI  - Bar pattern speed evolution over the las 7 Gyr
DO  - 10.1051/0004-6361/201118396
ER  -