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Systematic Blueshift of Line Profiles in the Type IIn Supernova 2010jl: Evidence for Post-Shock Dust Formation?
Nathan Smith, Jeffrey M. Silverman, Alexei V. Filippenko +5
Type IIn SNe show spectral evidence for strong interaction between their blast wave and dense circumstellar material (CSM) around the progenitor star. SN2010jl was the brightest co…
First Results from the 3D-HST Survey: The Striking Diversity of Massive Galaxies at z>1
Pieter G. van Dokkum, Gabriel Brammer, Mattia Fumagalli +26
We present first results from the 3D-HST program, a near-IR spectroscopic survey performed with the Wide Field Camera 3 on the Hubble Space Telescope. We have used 3D-HST spectra t…
Discovering the missing 2.2<z<3 quasars by combining optical variability and optical/near-IR colors
Xue-Bing Wu, Ran Wang, Kasper B. Schmidt +3
The identifications of quasars in the redshift range 2.2<z<3 are known to be very inefficient as their optical colors are indistinguishable from those of stars. Recent studies have…
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…