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The formation and build-up of the red-sequence over the past 9 Gyr in VIPERS

Published online by Cambridge University Press:  09 February 2015

Alexander Fritz
Affiliation:
INAF - IASF Milano, Via E. Bassini 15, 20133Milano, Italy email: afritz@iasf-milano.inaf.it
the VIPERS Team
Affiliation:
The VIPERS Team: U. Abbas, C. Adami, S. Arnouts, J. Bel, M. Bolzonella, D. Bottini, E. Branchini, A. Burden, A. Cappi, J. Coupon, O. Cucciati, I. Davidzon, G. De Lucia, S. de la Torre, C. Di Porto, P. Franzetti, M. Fumana, B. Garilli, B. R. Granett, L. Guzzo, O. Ilbert, A. Iovino, J. Krywult, V. Le Brun, O. Le Fèvre, D. Maccagni, K. Małek, A. Marchetti, C. Marinoni, F. Marulli, H. J. McCracken, Y. Mellier, L. Moscardini, R. C. Nichol, L. Paioro, J. A. Peacock, W. J. Percival, M. Polletta, A. Pollo, M. Scodeggio, L. A. M. Tasca, R. Tojeiro, D. Vergani, G. Zamorani and A. Zanichelli; Web address: http://vipers.inaf.it
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Abstract

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We present the Luminosity Function (LF) and Colour-Magnitude Relation (CMR) using ∼45000 galaxies drawn from the VIMOS Public Extragalactic Redshift Survey (VIPERS). Using different selection criteria, we define several samples of early-type galaxies and explore their impact on the evolution of the red-sequence (RS) and the effects of dust. Our results suggest a rapid build-up of the RS within a short time scale. We find a rise in the number density of early-type galaxies and a strong evolution in LF and CMR. Massive galaxies exist already 9 Gyr ago and experience an efficient quenching of their star formation at z = 1, followed by a passive evolution with only limited merging activity. In contrast, low-mass galaxies indicate a different mass assembly history and cause a slow build-up of the CMR over cosmic time.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2015 

References

Fritz, A., Scodeggio, M., Ilbert, O., et al. 2014, A&A, 563, A92Google Scholar
Garilli, B., Guzzo, L., Scodeggio, M., et al. 2014, A&A, 562, A23Google Scholar
Guzzo, L., Scodeggio, M., Garilli, B., et al. 2014, A&A, 566, A108Google Scholar