C.D.S. - SIMBAD4 rel 1.7 - 2020.10.30CET03:05:00

2005A&A...443..831H - Astronomy and Astrophysics, volume 443, 831-839 (2005/12-1)

Surface density of extremely red objects with R-J ≥ 5.


Abstract (from CDS):

We present the results of a wide-field survey for extremely red objects (EROs), based on J and R band imaging. The survey covers 2.89 deg2, consisting of 50 single fields, each approximately 210-arcmin2 in size. This survey provides a sample of 60 extended objects with a colour of R-J≥5 and J band magnitudes more than 10σ above background (18mag≤J≤20mag). Thirty five of these objects have been detected in both J and R-band. We derive a surface density for such EROs of 5.7±0.1x10–3arcmin–2, which is about seven times lower than for galaxies with R-K≥6. Stellar population models suggest that these EROs are massive galaxies with an old stellar population in a redshift range of 1.4≤z ≤3.0. For this scenario, we estimate the co-moving volume density to be (9.57±1.24)x10–6Mpc–3.

Abstract Copyright:

Journal keyword(s): Galaxy: evolution - galaxies: high-redshift - galaxies: elliptical and lenticular, cD

Simbad objects: 2

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Number of rows : 2

N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
1 HD 256 ** 00 07 18.2617173748 -17 23 13.242357537   6.311 6.203 7.36   A3Vn_sh 99 0
2 * 5 Cet bL* 00 08 12.0964497643 -02 26 51.738572672   7.58 6.22     K2IIICNIVp 115 0

    Equat.    Gal    SGal    Ecl

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