2005ApJ...627..621S

Query : 2005ApJ...627..621S

2005ApJ...627..621S - Astrophys. J., 627, 621-631 (2005/July-2)

Properties of extremely red objects in an overdense region.

SAWICKI M., STEVENSON M., BARRIENTOS L.F., GLADMAN B., MALLEN-ORNELAS G. and VAN DEN BERGH S.

Abstract (from CDS):

We use a serendipitously discovered overdensity of extremely red objects (EROs) to study the morphologies and cumulative surface number density of EROs in a dense environment. Our extremely deep imaging allows us to select very faint EROs, reaching KS=21, or ∼2 mag fainter than the L* of passively evolving ellipticals at z=1.5. We find that the shape of the ERO cumulative surface number density in our overdense field mimics that of the field ERO population over all magnitudes down to KS=21 but with a factor of 3-4 higher normalization. The excellent seeing in our images (0".4 in KSand 0".6 in R) allows for morphological classification of the brighter (KS<19) EROs, and we find a mix of morphologies including interacting systems and disks; the fraction of pure bulges (at most 38%), galaxies with disks (at least 46%), and interacting systems (at least 21%) is consistent with morphological fractions in field ERO studies. The similarity in the shape of the cumulative surface density and morphological mix between our overdense field and the field ERO population suggests that ERO galaxies in overdense regions at z∼1-2 may not have had an appreciably different history from those in the field.

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Journal keyword(s): Galaxies: Clusters: General - Galaxies: Evolution - Galaxies: High-Redshift - Galaxies: Statistics - Infrared: Galaxies

VizieR on-line data: <Available at CDS (J/ApJ/627/621): table1.dat>

Nomenclature: Table 1: [SSB2005b] NNNN N=101 among (Nos 100-3033).

Status at CDS : All or part of tables of objects could be ingested in SIMBAD with priority 2.

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME GOODS-N Field reg 12 36 55.0 +62 14 15           ~ 1364 1

Query : 2005ApJ...627..621S

Basic data :
NAME GOODS-N Field -- Region defined in the Sky
Other object types: otypes_help 		reg ()
ICRS coord. (ep=J2000) : 		12 36 55.0 +62 14 15 [ ] D 2011ApJ...732..126M
FK4 coord. (ep=B1950 eq=1950) : 		12 34 41.1 +62 30 45 [ ]
Gal coord. (ep=J2000) : 		125.8654 +54.8080 [ ]
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Identifiers (4) :
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NAME GOODS-N Field NAME GOODS North Field NAME GOODS Northern Field NAME GOODS-North Field

References (1364 between 1850 and 2026) (Total 1364)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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