Bibcode
Trujillo, I.; Azzollini, R.; Pohlen, M.; Beckman, J. E.
Bibliographical reference
Formation and Evolution of Galaxy Disks ASP Conference Series, Vol. 396, Proceedings of the conference held 1-5 October, 2007 at the Centro Convegni Matteo Ricci, Rome, Italy. Edited by José G. Funes, S.J., and Enrico Maria Corsini. San Francisco: Astronomical Society of the Pacific, 2008., p.401
Advertised on:
10
2008
Citations
0
Refereed citations
0
Description
We have conducted a systematic search for stellar disk truncations in
disk--like galaxies at intermediate redshift (z<1.1) using the Great
Observatories Origins Deep Survey South (GOODS-S) data. Focusing on
galaxies with a Type II (i.e., downbending profile) we explore whether
the position of the break (i.e., a direct estimator of the size of the
stellar disk) evolves with time. The number of galaxies under analysis
(238) is an order of magnitude larger than in previous studies. For the
first time, we probe the evolution of the break radius at a given
stellar mass (a much better proxy to address evolutionary studies). Our
results suggest that, at given stellar mass, the radial position of the
break has increased with cosmic time by a factor of 1.4 in the last
˜8 Gyr. This is in agreement with a moderate inside-out growth of
the disk galaxies since z˜1.