Linking galaxies to dark matter haloes at $z\sim 1$ : dependence of galaxy clustering on stellar mass and specific star formation rate

Abstract

We study the dependence of angular two-point correlation functions on stellar mass ($M_{\ast }$) and specific star formation rate (sSFR) of $M_{\ast }>10^{10}{M}_{\odot }$ galaxies at $z\sim 1$. The data from UKIDSS DXS and CFHTLS covering 8.2 deg${}^2$ sample scales larger than 100 $h^{-1}$Mpc at $z\sim 1$, allowing us to investigate the correlation between clustering, $M_{\ast }$, and star formation through halo modeling. Based on halo occupation distributions (HODs) of $M_{\ast }$ threshold samples, we derive HODs for $M_{\ast }$ binned galaxies, and then calculate the $M_{\ast }/M_{\mathrm{halo}}$ ratio. The ratio for central galaxies shows a peak at $M_{\mathrm{halo}}\sim 10^{12}{h}^{-1}{M}_{\odot }$, and satellites predominantly contribute to the total stellar mass in cluster environments with $M_{\ast }/M_{\mathrm{halo}}$ values of 0.01--0.02. Using star-forming galaxies split by sSFR, we find that main sequence galaxies ($\log sSFR/y{\mathrm{r}}^{-1}\sim -9$) are mainly central galaxies in $\sim 10^{12.5}{h}^{-1}{M}_{\odot }$ haloes with the lowest clustering amplitude, while lower sSFR galaxies consist of a mixture of both central and satellite galaxies where those with the lowest $M_{\ast }$ are predominantly satellites influenced by their environment. Considering the lowest $M_{\mathrm{halo}}$ samples in each $M_{\ast }$ bin, massive central galaxies reside in more massive haloes with lower sSFRs than low mass ones, indicating star-forming central galaxies evolve from a low $M_{\ast }$--high sSFR to a high $M_{\ast }$--low sSFR regime. We also find that the most rapidly star-forming galaxies ($\log sSFR/y{\mathrm{r}}^{-1}>-8.5$) are in more massive haloes than main sequence ones, possibly implying galaxy mergers in dense environments are driving the active star formation. These results support the conclusion that the majority of star-forming galaxies follow secular evolution through the sustained but decreasing formation of stars.

Published in ApJ

References in corpus (33)

• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• Mass and environment as drivers of galaxy evolution in SDSS and zCOSMOS and the origin of the Schechter function
• Star Formation in AEGIS Field Galaxies since z=1.1 : The Dominance of Gradually Declining Star Formation, and the Main Sequence of Star-Forming Galaxies
• COSMOS Photometric Redshifts with 30-bands for 2-deg2
• Detection of quiescent galaxies in a bicolor sequence from z=0-2
• Galaxy Evolution from Halo Occupation Distribution Modeling of DEEP2 and SDSS Galaxy Clustering
• PRIMUS: Constraints on Star Formation Quenching and Galaxy Merging, and the Evolution of the Stellar Mass Function From z=0-1
• Galaxy Pairs in the Sloan Digital Sky Survey I: Star Formation, AGN Fraction, and the Luminosity/Mass-Metallicity Relation
• A primer on hierarchical galaxy formation: the semi-analytical approach
• The DEEP2 Galaxy Redshift Survey: The Role of Galaxy Environment in the Cosmic Star-Formation History
• The DEEP2 Galaxy Redshift Survey: Color and Luminosity Dependence of Galaxy Clustering at z~1
• The UKIRT Infrared Deep Sky Survey Early Data Release
• The Structures of Distant Galaxies - III: The Merger History of over 20,000 Massive Galaxies at z < 1.2
• Interaction-induced star formation in a complete sample of 10^5 nearby star-forming galaxies
• Ongoing Assembly of Massive Galaxies by Major Merging in Large Groups and Clusters from the SDSS
• The 2dF-SDSS LRG and QSO survey: Evolution of the Luminosity Function of Luminous Red Galaxies to z=0.6
• The Vimos VLT Deep Survey: Global properties of 20000 galaxies in the I_AB<=22.5 WIDE survey
• The Properties and Evolution of a K-band Selected Sample of Massive Galaxies at z~0.4 - 2 in the Palomar/DEEP2 Survey
• The 2dF-SDSS LRG and QSO survey: evolution of the clustering of luminous red galaxies since z = 0.6
• Biases and Uncertainties in Physical Parameter Estimates of Lyman Break Galaxies from Broad-band Photometry
• A Confirmation of the Strong Clustering of Distant Red Galaxies at 2 < z <3
• Clustering properties of galaxies selected in stellar mass: Breaking down the link between luminous and dark matter in massive galaxies from z=0 to z=2
• The Clustering Evolution of Distant Red Galaxies in the GOODS-MUSIC Sample
• Clustering properties of a type-selected volume-limited sample of galaxies in the CFHTLS
• The clustering and abundance of star-forming and passive galaxies at $z\sim 2$
• The evolution of galaxy clustering since z = 3 using the UKIDSS Ultra Deep Survey: the divergence of passive and star-forming galaxies
• Number counts and clustering properties of bright Distant Red Galaxies in the UKIDSS Ultra Deep Survey Early Data Release
• Optical - Near-Infrared catalogue for the AKARI North Ecliptic Pole Deep Field
• Evolution of the Clustering of Photometrically Selected SDSS Galaxies
• The evolution of galaxy star formation activity in massive halos
• The Zurich Environmental Study (ZENS) of Galaxies in Groups along the Cosmic Web. V. Properties and Frequency of Merging Satellites and Centrals in Different Environments
• Steadily Increasing Star Formation Rates in Galaxies Observed at 3 <~ z <~ 5 in the CANDELS/GOODS-S Field
• The Clustering of Extremely Red Objects

Cited by in corpus (6)

• Linear bias forecasts for emission line cosmological surveys
• The evolution of the galaxy content of dark matter haloes
• More connected, more active: galaxy clusters and groups at z~1 and the connection between their quiescent galaxy fractions and large-scale environments
• Color dependence of clustering of massive galaxies at 0.5$\le z\le$2.5: similar spatial distributions between green valley galaxies and AGNs
• The dependence of cluster galaxy properties on the central entropy of their host cluster
• Estimating lifetimes of uv-selected massive galaxies at $0.5\le z\le 2.5$ in the cosmos/ultravista field through clustering analyses