51. The UV and Ly$\alpha$ Luminosity Functions of galaxies and the Star Formation Rate Density at the end of HI reionization from the VIMOS Ultra-Deep Survey (VUDS)
- Author
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Khusanova, Y., Fèvre, 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., Amorín, R., Bardelli, S., Castellano, M., Cassarà, 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., and Zucca, E.
- Subjects
Astrophysics - Astrophysics of Galaxies ,Astrophysics - Cosmology and Nongalactic Astrophysics - 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$\alpha$ either in absorption or in emission, at variance with most spectroscopic samples in the literature where Ly$\alpha$ 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 3
2. The bright end of the Ly$\alpha$ luminosity function has a high number density, indicating a significant star formation activity concentrated in the brightest Ly$\alpha$ emitters (LAE) at these redshifts. LAE with EW>25\AA ~contribute to about 75\% of the total UV-derived SFRD. While our analysis favors a low dust content in 5.0 - Published
- 2019
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