Quick search Find article
Quick search
Find article

The B-Band Luminosity Function of Red and Blue Galaxies up to z = 3.5

FREE

E. Giallongo1, S. Salimbeni1, N. Menci1, G. Zamorani2, A. Fontana1, M. Dickinson3, S. Cristiani4 and L. Pozzetti2

Show affiliations


We have explored the redshift evolution of the luminosity function of red and blue galaxies up to z = 3.5. This was possible by joining a deep I-band composite galaxy sample, which includes the spectroscopic K20 sample and the Hubble Deep Field samples, with the deep HAB = 26 and KAB = 25 samples derived from the deep NIR images of the Hubble Deep Field-North and Hubble Deep Field-South, respectively. About 30% of the sample has spectroscopic redshifts and the remaining fraction well-calibrated photometric redshifts. This allowed us to select and measure galaxies in the rest-frame blue magnitude up to z ~ 3 and derive the redshift evolution of the B-band luminosity function of galaxies separated by their rest-frame U - V color or specific (i.e., per unit mass) star formation rate. The class separation was derived from passive evolutionary tracks or from their observed bimodal distributions. Both distributions appear bimodal at least up to z ~ 2, and the locus of red/early galaxies is clearly identified up to these high redshifts. Both luminosity and density evolutions are needed to describe the cosmological behavior of the red/early and blue/late populations. The density evolution is greater for the early population with a decrease by 1 order of magnitude at z ~ 2-3 with respect to the value at z ~ 0.4. The luminosity densities of the early- and late-type galaxies with MB < -20.6 appear to have a bifurcation at z > 1. Indeed, while star-forming galaxies slightly increase or keep constant their luminosity density, "early" galaxies decrease in their luminosity density by a factor of ~5-6 from z ~ 0.4 to z ~ 2.5-3. A comparison of one of the latest versions of the hierarchical cold dark matter models shows a broad agreement with the observed number and luminosity density evolutions of both populations.


Subject headings

galaxies: distances and redshifts; galaxies: evolution; galaxies: formation


Dates

Issue 1 (2005 March 20)

Received 2004 September 8, accepted for publication 2004 November 30



  1. The B-Band Luminosity Function of Red and Blue Galaxies up to z = 3.5

    E. Giallongo et al. 2005 ApJ 622 116

  2. Universal properties of Bose systems with van der Waals interaction

    Bo Gao 2004 J. Phys. B: At. Mol. Opt. Phys. 37 L227

  3. Warm-Hot Intergalactic Medium Associated with the Coma Cluster

    Y. Takei et al. 2007 ApJ 655 831

  4. Semiclassical limit of chaotic eigenfunctions

    Eduardo G Vergini 2004 J. Phys. A: Math. Gen. 37 6507

  5. The presence and lack of Fermi acceleration in nonintegrable billiards

    S Oliffson Kamphorst et al 2007 J. Phys. A: Math. Theor. 40 F887

  6. The glass transition of nanoscale polymeric films

    T S Chow 2002 J. Phys.: Condens. Matter 14 L333

  7. Time-dependent constrained Hamiltonian systems and Dirac brackets

    Manuel de León et al 1996 J. Phys. A: Math. Gen. 29 6843

  8. Anisotropy in cohesive, frictional granular media

    Stefan Luding 2005 J. Phys.: Condens. Matter 17 S2623

  9. Joint Hα and X-Ray Observations of Massive X-Ray Binaries. II. The Be X-Ray Binary and Microquasar LS I +61 303

    E. D. Grundstrom et al. 2007 ApJ 656 437

  10. Nuclear Gasdynamics in Arp 220: Subkiloparsec-Scale Atomic Hydrogen Disks

    C. G. Mundell et al. 2001 ApJ 560 168

View by subject




Export








Please login to access our web services, or create an account if you don't yet have one.

You must have cookies enabled in your web browser to be able to login.

Username
Password

Forgotten your password? Get a new one here.