Tracing the formation of massive spheroids from high-z galaxy clustering

Details Tracing the formation of massive spheroids from high-z galaxy clustering Tracing the formation of massive spheroids from high-z galaxy clustering

2004-01-12

arxiv.org/abs/astro-ph/0401215v1

Astronomy and Astrophysics

Astrophysics

6 pages, 3 figures, in "Multiwavelength Mapping of Galaxy Formation and Evolution" Venice, October 2003, conference proceeding

Scientific paper

10.1007/10995020_39

The high-z progenitors of local massive early-type galaxies should be characterized by a strong level of clustering, larger than that measured for z=3 Lyman Break Galaxies and comparable to that of z~1 EROs. First possible evidences for such strongly clustered objects at z~2 were found by the FIRES and K20 surveys, that have identified new classes of faint high-z K-selected galaxies. Some details are given here for the new population of massive star-forming galaxies at z~2, found by the K20 survey in the GOODS-South area. Because of their much redder UV continuum, most of these galaxies would not be selected by the Lyman Break criterion. Such objects are good candidates for the precursors of local ellipticals caught in their formation phase. We have calibrated a two color criterion to allow the identification of these highest redshift galaxies in bright K-limited samples.

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