期刊
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
卷 459, 期 3, 页码 2618-2631出版社
OXFORD UNIV PRESS
DOI: 10.1093/mnras/stw769
关键词
techniques: photometric; galaxies: evolution; galaxies: high-redshift; galaxies: star formation; large scale structure of Universe
资金
- STFC studentship
- Penn State Summer School in Statistics for Astronomers X
- Rector and Fellows of Lincoln College through Graduate Research Fund
- Leverhulme Trust
- ESO Telescopes at the La Silla or Paranal Observatories under ESO programme [179.A- 2006]
- Science and Technology Facilities Council [1379829] Funding Source: researchfish
- ESRC [ES/N013956/1] Funding Source: UKRI
- STFC [ST/N000919/1] Funding Source: UKRI
We present a series of results from a clustering analysis of the first data release of the Visible and Infrared Survey Telescope for Astronomy (VISTA) Deep Extragalactic Observations (VIDEO) survey. VIDEO is the only survey currently capable of probing the bulk of stellar mass in galaxies at redshifts corresponding to the peak of star formation on degree scales. Galaxy clustering is measured with the two-point correlation function, which is calculated using a non-parametric kernel-based density estimator. We use our measurements to investigate the connection between the galaxies and the host dark matter halo using a halo occupation distribution methodology, deriving bias, satellite fractions, and typical host halo masses for stellar masses between 10(9.35) and 10(10.85) M-circle dot, at redshifts 0.5 < z < 1.7. Our results show typical halo mass increasing with stellar mass (with moderate scatter) and bias increasing with stellar mass and redshift consistent with previous studies. We find that the satellite fraction increased towards low redshifts, from similar to 5 per cent at z similar to 1.5 to similar to 20 per cent at z similar to 0.6. We combine our results to derive the stellar mass-to-halo mass ratio for both satellites and centrals over a range of halo masses and find the peak corresponding to the halo mass with maximum star formation efficiency to be similar to 2 x 10(12) M-circle dot, finding no evidence for evolution.
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