The Dependence of Galaxy Clustering on Stellar-mass Assembly History for LRGs

DOI: 
10.3847/2041-8213/aa8cc5
Publication date: 
01/10/2017
Main author: 
Montero-Dorta, Antonio D.
IAA authors: 
Montero-Dorta, Antonio D.;Pérez, Enrique;Prada, Francisco;González Delgado, Rosa M.;García-Benito, Rubén
Authors: 
Montero-Dorta, Antonio D.;Pérez, Enrique;Prada, Francisco;Rodríguez-Torres, Sergio;Favole, Ginevra;Klypin, Anatoly;Cid Fernandes, Roberto;González Delgado, Rosa M.;Domínguez, Alberto;Bolton, Adam S.;García-Benito, Rubén;Jullo, Eric;Niemiec, Anna
Journal: 
The Astrophysical Journal
Refereed: 
Yes
Publication type: 
Article
Volume: 
848
Pages: 
L2
Abstract: 

We analyze the spectra of 300,000 luminous red galaxies (LRGs) with stellar masses {M}<SUB>* </SUB>≳ {10}<SUP>11</SUP> {M}<SUB>☉ </SUB> from the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS). By studying their star formation histories, we find two main evolutionary paths converging into the same quiescent galaxy population at z̃ 0.55. Fast-growing LRGs assemble 80% of their stellar mass very early on (z̃ 5), whereas slow-growing LRGs reach the same evolutionary state at z̃ 1.5. Further investigation reveals that their clustering properties on scales of ̃1-30 Mpc are, at a high level of significance, also different. Fast-growing LRGs are found to be more strongly clustered and reside in overall denser large-scale structure environments than slow-growing systems, for a given stellar-mass threshold. Our results show a dependence of clustering on a property that is directly related to the evolution of galaxies, i.e., the stellar-mass assembly history, for a homogeneous population of similar mass and color. In a forthcoming work, we will address the halo connection in the context of galaxy assembly bias.

Database: 
ADS
SCOPUS
URL: 
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85031903297&doi=10.3847%2f2041-8213%2faa8cc5&partnerID=40&md5=85a8287ddf80c6eee78f092f6f6fde9a
ADS Bibcode: 
2017ApJ...848L...2M
Keywords: 
galaxies: evolution;galaxies: formation;galaxies: halos;large-scale structure of universe;methods: numerical;surveys