Tracing the evolution of massive galaxies up to z \sim 3

Details Tracing the evolution of massive galaxies up to z \sim 3 Tracing the evolution of massive galaxies up to z \sim 3

2003-12-11

arxiv.org/abs/astro-ph/0312293v1

Astronomy and Astrophysics

Astrophysics

2 pages, 1 figure. To appear in the proceedings of the Venice conference "Multiwavelength Mapping of Galaxy Formation and Evol

Scientific paper

A census of massive galaxies at redshift increasingly higher than $z\sim$1 may provide strong constraints on the history of mass assembly and of star formation. Here we report on the analysis of three galaxies selected in the Hubble Deep Field South on the basis of their unusually red near-IR color J-K$\ge$3. These objects result to be massive (M$_{star}\sim 10^{11}$M$_{\odot}$) galaxies at redshift 2.5$<$z$<$3 which cannot follow an evolution significantly different from passive aging. Thus, their counterpart can be found among the EROs (i.e., R-K>5) at 1$<$z$<$1.5, and among the local massive old early-type galaxies at $z=0$. In order to find their counterpart also at the intermediate redshift z$\sim$2, we present a new color selection criterion (J-K$<$3 and I-H$>$4) on the basis of which we identified 4 massive evolved galaxies at 1.5$

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