EROs and the formation epoch of field ellipticals

Details EROs and the formation epoch of field ellipticals EROs and the formation epoch of field ellipticals

2000-10-04

arxiv.org/abs/astro-ph/0010093v1

Astronomy and Astrophysics

Astrophysics

5 pages, 1 figure. A&A Letters, in press

Scientific paper

A comparison is presented between the observed surface density of extremely red objects (EROs) and the densities of red high-z elliptical galaxies predicted by Pure Luminosity Evolution (PLE) and by some CDM hierarchical models. The analysis is based on the widest field survey for EROs available to date (covering in total $\sim$850 arcmin^2), and it takes into account the effects of ERO clustering. Good agreement is found between the observed surface densities of EROs and those predicted by PLE models for ellipticals selected using the same color and luminosity thresholds. Since there is evidence that the bulk of EROs are passively evolving ellipticals, this result implies that most field ellipticals were fully assembled at least by $z\sim$2.5. Existing hierarchical models predict instead a surface density of red ellipticals that is much smaller than that of the EROs.

Affiliated with

Also associated with

No associations

Rating

EROs and the formation epoch of field ellipticals does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with EROs and the formation epoch of field ellipticals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and EROs and the formation epoch of field ellipticals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-327693