Volume 570, October 2014
|Number of page(s)||9|
|Section||Cosmology (including clusters of galaxies)|
|Published online||30 October 2014|
Cross-correlation of cosmic far-infrared background anisotropies with large scale structures⋆
Institut d’Astrophysique Spatiale (IAS), Bâtiment 121, Université Paris-Sud
11 and CNRS (UMR 8617),
2 Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Drive, Pasadena, California, USA
3 California Institute of Technology, Pasadena, California, USA
4 Department of Physics, University of California Berkeley, CA 94720, USA
5 Lawrence Berkeley National Laboratory, 1 Cyclotron Rd, Berkeley, CA 94720, USA
Received: 7 April 2014
Accepted: 25 August 2014
We measure the cross-power spectra between luminous red galaxies (LRGs) from the Sloan Digital Sky Survey (SDSS)-III data release 8 (DR8) and cosmic infrared background (CIB) anisotropies from Planck and data from the Improved Reprocessing (IRIS) of the Infrared Astronomical Satellite (IRAS) at 353, 545, 857, and 3000 GHz, corresponding to 850, 550, 350 and 100 μm, respectively, in the multipole range 100 < l < 1000. Using approximately 6.5 × 105 photometrically determined LRGs in 7760 deg2 of the northern hemisphere in the redshift range 0.45 < z < 0.65, we model the far-infrared background (FIRB) anisotropies with an extended version of the halo model. With these methods, we confirm the basic picture obtained from recent analyses of FIRB anisotropies with Herschel and Planck, that the most efficient halo mass at hosting star forming galaxies is log (Meff/M⊙) = 12.84 ± 0.15. We estimate the percentage of FIRB anisotropies correlated with LRGs as approximately 11.8%, 3.9%, 1.8%, and 1.0% of the total at 3000, 857, 545, and 353 GHz, respectively. At redshift z ~ 0.55, the bias of FIRB galaxies with respect to the dark matter density field has the value bFIRB ~ 1.45, and the mean dust temperature of FIRB galaxies is Td = 26 K. Finally, we discuss the impact of present and upcoming cross-correlations with far-infrared background anisotropies on the determination of the global star formation history and the link between galaxies and dark matter.
Key words: cosmic background radiation / infrared: diffuse background / galaxies: evolution / large-scale structure of Universe / galaxies: statistics
Based on observations obtained with Planck (http://www.esa.int/Planck), an ESA science mission with instruments and contributions directly funded by ESA Member States, NASA, and Canada.
© ESO, 2014
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