Evidence for environment-dependent galaxy Luminosity Function up to z=1.5 in the VIMOS-VLT Deep Survey
/ Authors
O. Ilbert, O. Cucciati, C. Marinoni, L. Tresse, O. Fèvre, G. Zamorani, S. Bardelli, A. Iovino, E. Zucca, S. Arnouts
and 41 more authors
D. Bottini, B. Garilli, V. Brun, D. Maccagni, J. Picat, R. Scaramella, M. Scodeggio, G. Vettolani, A. Zanichelli, C. Adami, M. Bolzonella, A. Cappi, S. Charlot, P. Ciliegi, T. Contini, S. Foucaud, P. Franzetti, I. Gavignaud, L. Guzzo, B. Marano, A. Mazure, H. McCracken, B. Meneux, R. Merighi, S. Paltani, R. Pelló, A. Pollo, L. Pozzetti, M. Radovich, M. Bondi, A. Bongiorno, G. Busarello, S. D. Torre, L. Gregorini, F. Lamareille, G. Mathez, Y. Mellier, P. Merluzzi, V. Ripepi, D. Rizzo, D. Vergani
/ Abstract
We measure the evolution of the galaxy Luminosity Function as a function of large-scale environment up to z=1.5 from the VIMOS-VLT Deep Survey (VVDS) first epoch data. The 3D galaxy density field is reconstructed using a sample of 6582 galaxies with 17.5 0 due to hierarchical growth of structures. As the environmental dependency of the LF shape is already present at least up to z=1.2, we therefore conclude that either the shape of the LF is imprinted very early on in the life of the Universe, a `nature' process, or that `nurture' physical processes shaping up environment relation have already been efficient earlier than a look-back time corresponding to 30% of the current age of the Universe.
Journal: arXiv: Astrophysics