The VIMOS Ultra-Deep Survey: Emerging from the dark, a massive proto-cluster at z ~ 4.57

Brian C. Lemaux (1) , O. Le Fevre (2) , O. Cucciati (3) , B. Ribeiro (2) , L. Tasca (2) , G. Zamorani (4) , Olivier Ilbert (2) , R. Thomas (2) , S. Bardelli (4) , P. Cassata (2) , P. Hathi (5) , J. Pforr (2) , V. Smolčić (6) , I. Delvecchio (6) , M. Novak (6) , S. Berta (7) , H. J. Mccracken (8) , A. Koekemoer (5) , R. Amorín (9) , B. Garilli (10) , D. Maccagni (10) , D. Schaerer (11) , E. Zucca (12)

1 Physics - UC Davis - Department of Physics and Astronomy [Univ California Davis]
2 LAM - Laboratoire d'Astrophysique de Marseille
3 Dipartimento di Fisica
4 OABO - INAF - Osservatorio Astronomico di Bologna
5 STSci - Space Telescope Science Institute
6 University of Zagreb
7 MPE - Max-Planck-Institut für Extraterrestrische Physik
8 IAP - Institut d'Astrophysique de Paris
9 OAR - INAF - Osservatorio Astronomico di Roma
10 INAF-IASF Milano
11 IRAP - Institut de recherche en astrophysique et planétologie
12 Oncology Institute of Southern Switzerland

Using spectroscopic observations taken for the VIMOS Ultra-Deep Survey (VUDS) we report here on the discovery of PCl J1001+0220, a massive proto-cluster located at $z_{spec}\sim4.57$ in the COSMOS field. The proto-cluster was initially detected as a $\sim12\sigma$ overdensity of typical star-forming galaxies in the blind spectroscopic survey of the early universe ($2

Mots clés: Techniques spectroscopic; Galaxies : clusters; Galaxies : évolution; Galaxies : high-redshift; Techniques : photometric

Domaines: Astrophysique [astro-ph]; Cosmologie et astrophysique extra-galactique [astro-ph.CO]

Brian C. Lemaux, O. Le Fevre, O. Cucciati, B. Ribeiro, L. Tasca, et al.. The VIMOS Ultra-Deep Survey: Emerging from the dark, a massive proto-cluster at z ~ 4.57. Astronomy and Astrophysics - A&A, 2018, 615, pp.A77. ⟨10.1051/0004-6361/201730870⟩. ⟨hal-02110508⟩