David Sobral, Institute for Astronomy, Univ. Edinburgh


TITLE: "The Nature and Evolution of H’¦Á Emitters at High-z with HiZELS"


ABSTRACT: The High-z Emission Line Survey (HiZELS) is a world-leading
Campaign Project using WFCAM on UKIRT which exploits
specially-designed narrow-band filters in the J and H bands, along
with the H21-0S(1) filter in the K band, to undertake deep, wide
surveys for line emitters. HiZELS is primarily targeting the H’¦Á 
emission line redshifted into the near-infrared at z=0.84, z=1.47 and
z=2.23, and is covering 7 sqr. degrees, detecting around ~1000
emitters at each epoch over volumes of >106 Mpc3, and reaching
limiting star formation rates (SFRs) of 3-20 Msun/year.  In this talk,
I will present our most significant results so far, including the
first fully self-consistent measurement of the evolution of the H’¦Á 
luminosity function and the SFR density from z=0 to z=2.23, but also
our detailed view on the nature, clustering, dust-extinction, masses
and environment of H’¦Á emitters at the peak of the star-formation
history, by using the wealth of multi-wavelength data in the COSMOS
and UKIDSS UDS fields, and by conducting a wide range of follow-up
observations in 8-m class telescopes such as SUBARU or the VLT.