Bibcode
Trujillo, I.; Azzollini, R.; Bakos, J.; Beckman, J. E.; Pohlen, M.
Bibliographical reference
Highlights of Spanish Astrophysics V, Astrophysics and Space Science Proceedings. ISBN 978-3-642-11249-2. Springer-Verlag Berlin Heidelberg, 2010, p. 361
Advertised on:
2010
Citations
0
Refereed citations
0
Description
We present results on the cosmic evolution of the outskirts of disk
galaxies. In particular we focus on galaxies with stellar disk
truncations. Using UDF, GOODS and SDSS data we show how the position of
the break evolves with time since z ˜ 1. Our findings agree with
an evolution on the radial position of the break by a factor of 1.3
± 0.14 in the last 8 Gyr for galaxies with similar stellar
masses. We also present radial color gradients and how they evolve with
time. At all redshift we find a radial inside-out bluing reaching a
minimum at the position of the break radius, this minimum is followed by
a reddening outwards. Our results favor a scenario where stars are
formed inside the break radius and are relocated in the outskirts of
galaxies through secular processes.