Cluster galaxies at redshift 1.4

Details Cluster galaxies at redshift 1.4 Cluster galaxies at redshift 1.4

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1111...11s&link_type=abstract

PROBING STELLAR POPULATIONS OUT TO THE DISTANT UNIVERSE: CEFALU 2008, Proceedings of the International Conference. AIP Conferen

Computer Science

Distances, Redshifts, Radial Velocities, Spatial Distribution Of Galaxies, Galaxy Groups, Clusters, And Superclusters, Large Scale Structure Of The Universe, Origin, Formation, Evolution, Age, And Star Formation

Scientific paper

We present new and partly preliminary results on the galaxy populations in the massive, X-ray luminous cluster XMMU J2235-2557 at redshift 1.39. We use high-quality optical and NIR data to study the luminosity function of cluster galaxies at different wavelengths (restframe ~3500, 6500, 9000 Å), confirming previous results at lower redshifts showing that the redshift evolution of the characteristic luminosity M* of the luminosity function is consistent with passive evolution of a stellar population formed at redshift z>2. We build a restframe U-R vs R color-magnitude diagram from high-resolution z- and H-band images of XMMU J2235-2557 within R~700 kpc, finding a tight red sequence already in place. When compared to models of elliptical galaxy formation [1], the slope and location of the red sequence indicate a formation redshift of z~3 for the bulk of the stars in red sequence galaxies, at least brighter than M*+1. Spectral energy distribution fitting of multicolor data sampling the restframe ~2700-9000 Å wavelength range consistently indicates that cluster members on the red sequence are already massive galaxies hosting evolved stellar populations.

Affiliated with

Also associated with

No associations

Rating

Cluster galaxies at redshift 1.4 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 Cluster galaxies at redshift 1.4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cluster galaxies at redshift 1.4 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1109276