Volume 556, August 2013
|Number of page(s)||13|
|Section||Cosmology (including clusters of galaxies)|
|Published online||16 July 2013|
Effects of Lyman-alpha scattering in the IGM on clustering statistics of Lyman-alpha emitters⋆
Institut für Astrophysik, Georg-August Universität Göttingen, Friedrich-Hundt-Platz 1, 37077 Göttingen, Germany
e-mail: firstname.lastname@example.org; email@example.com
Received: 26 January 2013
Accepted: 3 June 2013
We investigate the correlations between the observed fraction of Lyman-alpha (Lyα) emission from star-forming galaxies and the large-scale structure by post-processing snapshots of a large, high-resolution hydrodynamical simulation with a Lyα radiative transfer code at redshifts z = 4,3,2. We find correlations of the observed fraction with density, density gradient along the line of sight, velocity, and velocity gradient along the line of sight, all within the same order of magnitude (tens of percent). Additionally, a correlation with the angular momentum of the dark matter halo is detected. In contrast to a previous study, we find no significant deformation of the two-point correlation function due to selection effects from radiative transfer in the intergalactic medium within the limited statistics of the simulation volume.
Key words: large-scale structure of Universe / radiative transfer / galaxies: high-redshift / intergalactic medium
Appendices are available in electronic form at http://www.aanda.org
© ESO, 2013
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