Title:　Hubble Infrared Pure Parallel Imaging Extragalactic Survey (HIPPIES) and Its Initial Results 
Speaker: Dr. Haojing Yan 
Institute: Center for Cosmology & AstroParticle Physics (CCAPP), The Ohio State University　　　　
Time  & Place: 14:00, July 19 2011; meeting room the 3rd floor SHAO 

Abstract:
Hubble Infrared Pure Parallel Imaging Extragalactic Survey (HIPPIES) has been utilizing the HST parallel orbits to do deep imaging along a large number of random sightlines since Cycle 17. The backbone data set of HIPPIES is from its four-band observations with WFC3, which are being obtained at a rate of ~ 40 fields/year. As its survey fields are disjoint and independent, the impact of "cosmic variance" is minimal. The details of HIPPIES will be presented, and some of its initial results will be discussed, which include: 1) the search for the most luminous Lyman-break galaxies (LBGs) at z>7.4 and the constraint on the brightest end of the luminosity function at these redshifts; 2) the study of very red galaxy population at intermediate redshifts, including a serendipitous discovery of a matured galaxy cluster cadidate at z ~ 2.1; 3) the search of cool Galactic dwarfs and the constraint on their scale height; and 4) the weak lensing experiment with the WFC3 data.