Skip to Main content Skip to Navigation
Journal articles

LARgE Survey – II. The dark matter haloes and the progenitors and descendants of ultramassive passive galaxies at cosmic noon

Abstract : We use a 27.6 deg 2 survey to measure the clustering of gzK s-selected quiescent galaxies at z ∼ 1.6, focusing on ultra-massive quiescent galaxies. We find that z ∼ 1.6 Ultra-Massive Passively Evolving Galaxies (UMPEGs), which have K s (AB) < 19.75 (stellar masses of M > ∼ 10 11.4 M and mean = 10 11.5 M), cluster more strongly than any other known galaxy population at high redshift. Comparing their correlation length, r 0 = 29.77 ± 2.75 h −1 Mpc, with the clustering of dark matter halos in the Millennium XXL N-body simulation suggests that these z ∼ 1.6 UMPEGs reside in dark matter halos of mass M h ∼ 10 14.1 h −1 M. Such very massive z ∼ 1.6 halos are associated with the ancestors of z ∼ 0 massive galaxy clusters such as the Virgo and Coma clusters. Given their extreme stellar masses and lack of companions with comparable mass, we surmise that these UMPEGs could be the already-quenched central massive galaxies of their (proto)clusters. We conclude that with only a modest amount of further growth in their stellar mass, z ∼ 1.6 UMPEGs could be the progenitors of some of the massive central galaxies of present-day massive galaxy clusters observed to be already very massive and quiescent near the peak epoch of the cosmic star formation.
Document type :
Journal articles
Complete list of metadata

https://hal-cnrs.archives-ouvertes.fr/hal-03100541
Contributor : Stephane Arnouts <>
Submitted on : Tuesday, January 26, 2021 - 2:46:49 PM
Last modification on : Friday, February 5, 2021 - 1:48:48 PM
Long-term archiving on: : Tuesday, April 27, 2021 - 6:50:44 PM

File

2002.12891.pdf
Publisher files allowed on an open archive

Identifiers

Collections

Citation

Gurpreet Kaur Cheema, Marcin Sawicki, Liz Arcila-Osejo, Anneya Golob, Thibaud Moutard, et al.. LARgE Survey – II. The dark matter haloes and the progenitors and descendants of ultramassive passive galaxies at cosmic noon. Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2020, 494 (1), pp.804-818. ⟨10.1093/mnras/staa601⟩. ⟨hal-03100541⟩

Share

Metrics

Record views

28

Files downloads

45