SIMBAD references

2006ApJ...637...58O - Astrophys. J., 637, 58-73 (2006/January-3)

Clustering of star-forming galaxies near a radio galaxy at z=5.2.

OVERZIER R.A., MILEY G.K., BOUWENS R.J., CROSS N.J.G., ZIRM A.W., BENITEZ N., BLAKESLEE J.P., CLAMPIN M., DEMARCO R., FORD H.C., HARTIG G.F., ILLINGWORTH G.D., MARTEL A.R., ROETTGERING H.J.A., VENEMANS B., ARDILA D.R., BARTKO F., BRADLEY L.D., BROADHURST T.J., COE D., FELDMAN P.D., FRANX M., GOLIMOWSKI D.A., GOTO T., GRONWALL C., HOLDEN B., HOMEIER N., INFANTE L., KIMBLE R.A., KRIST J.E., MEI S., MENANTEAU F., MEURER G.R., MOTTA V., POSTMAN M., ROSATI P., SIRIANNI M., SPARKS W.B., TRAN H.D., TSVETANOV Z.I., WHITE R.L. and ZHENG W.

Abstract (from CDS):

We present HST ACS observations of the most distant radio galaxy known, TN J0924-2201 at z=5.2. This radio galaxy has six spectroscopically confirmed Lyα-emitting companion galaxies and appears to lie within an overdense region. The radio galaxy is marginally resolved in i775 and z850, showing continuum emission aligned with the radio axis, similar to what is observed for lower redshift radio galaxies. Both the half-light radius and the UV star formation rate are comparable to the typical values found for Lyman break galaxies at z∼4-5. The Lyα emitters are sub-L*galaxies, with deduced star formation rates of 1-10 M/yr. One of the Lyα emitters is only detected in Lyα. Based on the star formation rate of ∼3 M/yr calculated from Lyα, the lack of continuum emission could be explained if the galaxy is younger than ∼2 Myr and is producing its first stars. Observations in V606i775z850were used to identify additional Lyman break galaxies associated with this structure. In addition to the radio galaxy, there are 22 V606break (z∼5) galaxies with z850<26.5 (5 σ), two of which are also in the spectroscopic sample. We compare the surface density of ∼2/arcmin2 to that of similarly selected V606dropouts extracted from GOODS and the UDF parallel fields. We find evidence for an overdensity to very high confidence (>99%), based on a counts-in-cells analysis applied to the control field. The excess suggests that the V606break objects are associated with a forming cluster around the radio galaxy.

Abstract Copyright:

Journal keyword(s): Cosmology: Observations - Cosmology: Early Universe - Galaxies: Clusters: General - Galaxies: High-Redshift - Galaxies: Individual: Alphanumeric: TN J0924-2201 - Galaxies: Starburst - Cosmology: Large-Scale Structure of Universe

Nomenclature: Table 3, Fig.9: [OMB2006] NNNN N=23 among (Nos 119-1979).

Simbad objects: 30

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2006ApJ...637...58O and select 'bookmark this link' or equivalent in the popup menu


2020.01.20-02:22:22

© Université de Strasbourg/CNRS

    • Contact