VUDS UV and Ly{alpha} luminosity functions

DOI

The star formation rate density (SFRD) evolution presents an area of great interest in the studies of galaxy evolution and reionization. The current constraints of SFRD at z>5 are based on the rest-frame UV luminosity functions with the data from photometric surveys. The VIMOS UltraDeep Survey (VUDS) was designed to observe galaxies at redshifts up to ~6 and opened a window for measuring SFRD at z>5 from a spectroscopic sample with a well-controlled selection function. We establish a robust statistical description of the star-forming galaxy population at the end of cosmic HI reionization (5.0<=z<=6.6) from a large sample of 49 galaxies with spectroscopically confirmed redshifts. We determine the rest-frame UV and Ly{alpha} luminosity functions and use them to calculate SFRD at the median redshift of our sample z=5.6. We selected a sample of galaxies at 5.0<=z_spec_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 LAE at these redshifts. LAE with equivalent width EW>25{AA} contribute to about 75% of the total UV-derived SFRD. While our analysis favors low dust content in 5.0<z<6.6, uncertainties on the dust extinction correction and associated degeneracy in spectral fitting will remain an issue, when estimating the total SFRD until future surveys extending spectroscopy to the NIR rest-frame spectral domain, such as with JWST.

Identifier
DOI http://doi.org/10.26093/cds/vizier.36340097
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/A+A/634/A97
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/634/A97
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/634/A97
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/A+A/634/A97
Provenance
Creator Khusanova Y.; Le Fevre O.; Cassata P.; Cucciati O.; Lemaux B.C.,Tasca L.A.M.; Thomas R.; Garilli B.; Le Brun V.; Maccagni D.,Pentericci L.; Zamorani G.; Amorin R.; Bardelli S.; Castellano M.,Cassara 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.
Publisher CDS
Publication Year 2020
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; Natural Sciences; Observational Astronomy; Physics