Abstract

The clustering of star-forming galaxies across cosmic time with HiZELS
Galaxy evolution at high redshift: the legacy of deep near-infrared surveys
Rachel Cochrane
Philip Best (Edinburgh), David Sobral (Lancaster), other members of HiZELS team
Royal Observatory Edinburgh
The deep near-infrared narrow band survey HiZELS has yielded exquisite samples of H-alpha emitters at 4 epochs spanning the decline of the cosmic star formation rate density (z~0.4, z~0.8, z~1.5 and z~2.2). Narrow band samples have well-defined redshift distributions and are therefore ideal for clustering analyses. Using these identically-selected samples, we probe the clustering of star-forming galaxies back ~11Gyr. At individual epochs, our samples are large enough to bin by both star formation rate and stellar mass. Fitting two-point correlation functions with sophisticated dark matter halo models, we identify the typical properties of the host haloes of different populations of H-alpha emitters. We constrain effective halo masses and central/satellite fractions as a function of star formation rate, stellar mass and cosmic epoch. In this talk I will present a detailed analysis of star-forming galaxies and their host dark matter haloes over cosmic time, and the implications of this for galaxy evolution.

Schedule

13:30 - 15:00
14:00
Tuesday
EX - LT2 (200)

RASLogo