Speaker
Ms
Pratika Dayal
(SISSA / International School for Advanced Studies)
Description
The present talk will focus on recently obtained results concerning the nature and properties of Lyman Alpha
Emitters (LAEs) and their use as a probe to investigate cosmic reionization history. Based on state-of-art
hydrodynamical simulations we discuss how the LAE Lya luminosity functions observed at various redshifts might be
affected by the presence of intergalactic neutral gas and clarify the role of dust grains and clustering of sources. For
the first time a coherent picture is developed in which the nature and global properties (stellar mass, star formation
rate, metallicity, gas mass and temperature) of the emitters are linked to their visibility. We also test our model by
reproducing the SED of specific high-z LAEs, as observed by Lai et al. 2007, for which Spitzer data are available. I
will discuss the remaining puzzles and possible strategies to overcome them.
Primary author
Ms
Pratika Dayal
(SISSA / International School for Advanced Studies)
