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| Paper: |
The Spatial Clustering of Mid-IR Selected Sources in the GOODS Fields |
| Volume: |
380, At the Edge of the Universe: Latest Results from the Deepest Astronomical Surveys |
| Page: |
409 |
| Authors: |
Gilli, R.; Daddi, E.; the GOODS team |
| Abstract: |
We measure the projected correlation function w(rp) for z ~ 0.8 star forming galaxies selected at 24μm in the GOODS fields. The best fit correlation length and slope for the combined sample are r0 ~ 4.1 ± 0.4 h−1 Mpc and γ = 1.5 ± 0.1, respectively. A larger correlation length is found for objects of higher luminosity, with Luminous Infrared Galaxies (LIRGs, LIR > 1011 L⊙) reaching r0 ~ 5.2 h−1 Mpc. This implies that galaxies with larger star formation rate are hosted in progressively more massive halos. We compared our measurements with the predictions from semi-analytic models based on the Millennium simulation. On scales of the GOODS fields, the real sources appear significantly more strongly clustered than objects in the Millennium mock catalogs, suggesting that star formation at z ~ 0.8 is being hosted in more massive halos and denser environments than currently predicted by galaxy formation models. |
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