EDP Sciences
Free access
Volume 404, Number 1, June II 2003
Page(s) 75 - 81
Section Extragalactic astronomy
DOI http://dx.doi.org/10.1051/0004-6361:20030473

A&A 404, 75-81 (2003)
DOI: 10.1051/0004-6361:20030473

UV-NIR restframe luminosity functions of the galaxy cluster EIS 0048 at z $\mathsf{\,\sim 0.64}$

M. Massarotti, G. Busarello, F. La Barbera and P. Merluzzi

I.N.A.F., Istituto Nazionale di Astrofisica Osservatorio Astronomico di Capodimonte, via Moiariello 16, 80131 Napoli, Italy
(Received 23 December 2002 / Accepted 24 March 2003)

We derive the galaxy luminosity functions in V-, R-, I-, and K-bands of the cluster EIS 0048 at $z \sim 0.64$ from data taken at the ESO Very Large Telescope. The data span the restframe wavelength range from UV, which is sensitive to even low rates of star formation, to the NIR, which maps the bulk of the stellar mass.

By comparing our data and previous results with pure luminosity evolution models, we conclude that bright ( $M \leq M^*+1$) cluster galaxies are already assembled at $z \sim 1$ and that star formation is almost completed at $z \sim 1.5$.

Key words: galaxies: clusters: individual: EIS 0048-2942 -- galaxies: evolution -- galaxies: luminosity function, mass function  -- galaxies: photometry

Offprint request: M. Massarotti, michele@na.astro.it

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© ESO 2003