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The First High Redshift Quasar from Pan-STARRS
Eric Morganson, Gisella De Rosa, Roberto Decarli +13
We present the discovery of the first high redshift (z > 5.7) quasar from the Panoramic Survey Telescope and Rapid Response System 1 (Pan-STARRS1 or PS1). This quasar was initially…
Probing Population III Stars in Galaxy IOK-1 at z = 6.96 through He II Emission
Zheng Cai, Xiaohui Fan, Linhua Jiang +7
The He II λ1640 emission line has been suggested as a direct probe of Population III (Pop III) stars at high-redshift, since it can arise from highly energetic ionizing photons ass…
The Eighth Data Release of the Sloan Digital Sky Survey: First Data from SDSS-III
III collaboration, Hiroaki Aihara, Carlos Allende Prieto +178
The Sloan Digital Sky Survey (SDSS) started a new phase in August 2008, with new instrumentation and new surveys focused on Galactic structure and chemical evolution, measurements…
The first (nearly) model-independent constraint on the neutral hydrogen fraction at z~5--6
Ian D. McGreer, Andrei Mesinger, Xiaohui Fan
Cosmic reionization is expected to be complex, extended and very inhomogeneous. Existing constraints at z~6 on the volume-averaged neutral hydrogen fraction, <x_HI>, are highly mod…