SIMBAD references

2011MNRAS.411.2009B - Mon. Not. R. Astron. Soc., 411, 2009-2018 (2011/March-1)

Star formation in the XMMU J2235.3-2557 galaxy cluster at z= 1.39.


Abstract (from CDS):

We present the first results of a narrow-band photometric study of the massive galaxy cluster XMMU J2235.3-2557 at z= 1.39. We obtained deep H narrow-band imaging with the Near InfraRed Imager and Spectrometer on Gemini North, corresponding to Hα emission at the cluster's redshift. Our sample consists of 82 galaxies within a radius of ∼500 kpc, 10 of which are spectroscopically confirmed cluster members. 16 galaxies are identified as excess line-emitters. Among just the excess line-emitting galaxies, we find an average star formation rate (SFR) of 3.6±1.3 M/yr. For spectroscopically confirmed cluster members, we find a correlation between H broad-band magnitude and SFR such that brighter galaxies have lower SFRs. The probability that the SFR and magnitude of confirmed members are uncorrelated is 0.7 per cent. We also find a correlation between the SFR and distance from the cluster centre for both confirmed and excess line-emitting candidate members, with a probability of 5 per cent for there to be no correlation among confirmed members. All excess line-emitting candidate cluster members are located outside a radius of 200 kpc. We conclude that star formation is effectively shut off within the central 200 kpc radius (RQUENCH∼ 200 kpc) of this massive galaxy cluster at z= 1.39, when the Universe was only 4.5 Gyr old.

Abstract Copyright: 2010 The Authors Monthly Notices of the Royal Astronomical Society2010 RAS

Journal keyword(s): galaxies: clusters: individual: XMMU J2235.3-2557 - galaxies: evolution - galaxies: fundamental parameters - galaxies: high-redshift - galaxies: star formation

VizieR on-line data: <Available at CDS (J/MNRAS/411/2009): table1.dat>

Nomenclature: Table 1: [BGJ2011] NN (Nos 1-82).

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

Simbad objects: 5

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