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astro-ph2008★ 18 cited
Stellar and Dust Properties of Local Elliptical Galaxies: Clues to the Onset of Nuclear Activity
Yu Zhang, Qiusheng Gu, Luis C. Ho
We study the stellar and dust properties of a well-defined sample of local elliptical galaxies to investigate the relationship between host galaxy properties and nuclear activity.…
astro-ph1997
The Column Density Distribution of the Lyman-Alpha Forest: A Measure of Small Scale Power
Lam Hui, Nickolay Y. Gnedin, Yu Zhang
Absorption lines in the Lyman-alpha forest can be thought of as peaks in neutral hydrogen density along lines of sight. The column density distribution (the number density of absor…
astro-ph1996
Cosmological Filaments and Minivoids: The Origin of Intergalactic Absorption
Yu Zhang, Avery Meiksin, Peter Anninos +1
Soon after the first QSO was identified, Gunn & Peterson searched for the expected characteristic absorption trough on the blueward side of Lya in the spectrum of the QSO due to an…