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The UV and Ly$��$ Luminosity Functions of galaxies and the Star Formation Rate Density at the end of HI reionization from the VIMOS Ultra-Deep Survey (VUDS)

Authors :
Khusanova, Y.
F��vre, O. Le
Cassata, P.
Cucciati, O.
Lemaux, B. C.
Tasca, L. A. M.
Thomas, R.
Garilli, B.
Brun, V. Le
Maccagni, D.
Pentericci, L.
Zamorani, G.
Amor��n, R.
Bardelli, S.
Castellano, M.
Cassar��, L. P.
Cimatti, A.
Giavalisco, M.
Hathi, N. P.
Ilbert, O.
Koekemoer, A. M.
Marchi, F.
Pforr, J.
Ribeiro, B.
Schaerer, D.
Tresse, L.
Vergani, D.
Zucca, E.
Publication Year :
2019
Publisher :
arXiv, 2019.

Abstract

We establish a robust statistical description of the star-forming galaxy population at the end of cosmic HI reionization ($5.0\le{}z\le6.6$) from a large sample of 52 galaxies with spectroscopically confirmed redshifts from the VIMOS UltraDeep Survey. We identify galaxies with Ly$��$ either in absorption or in emission, at variance with most spectroscopic samples in the literature where Ly$��$ emitters dominate. We find that star-forming galaxies at these redshifts are distributed along a main sequence in the stellar mass vs. SFR plane. We report a flat evolution of the sSFR(z) in 32. The bright end of the Ly$��$ luminosity function has a high number density, indicating a significant star formation activity concentrated in the brightest Ly$��$ emitters (LAE) at these redshifts. LAE with EW>25��~contribute to about 75\% of the total UV-derived SFRD. While our analysis favors a low dust content in 5.0<br />27 pages, submitted to A&A

Details

Database :
OpenAIRE
Accession number :
edsair.doi...........5467aa4dc08fc0cdaebfd32cb4cbc6e0
Full Text :
https://doi.org/10.48550/arxiv.1903.01884