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Possible Detection of Lyman-alpha Fluorescence from a Damped Lyman Alpha system at Redshift z=2.8
K. L. Adelberger, C. C. Steidel, J. A. Kollmeier +1
We have detected Lyman-alpha emission from a damped Lyman-alpha system (DLA) that lies near the bright quasar HS1549+1919. The DLA has the same redshift as HS1549+1919 and was disc…
Black Hole Masses and Eddington Ratios at 0.3<z<4
Juna A. Kollmeier, Christopher A. Onken, Christopher S. Kochanek +9
We study the distribution of Eddington luminosity ratios, L_bol/L_edd, of active galactic nuclei (AGNs) discovered in the AGN and Galaxy Evolution Survey (AGES). We combine H-beta,…
Survey for Transiting Extrasolar Planets in Stellar Systems. II. Spectrophotometry and Metallicities of Open Clusters
J. L. Marshall, Christopher J. Burke, D. L. DePoy +2
We present metallicity estimates for seven open clusters based on spectrophotometric indices from moderate-resolution spectroscopy. Observations of field giants of known metallicit…
Galactic Wind Effects on the Lyman-alpha Absorption in the Vicinity of Galaxies
Juna A. Kollmeier, Jordi Miralda-Escude, Renyue Cen +1
We present predictions of Ly-alpha forest-galaxy correlations at z=3 from Eulerian simulations that include the effects of galactic winds, driven primarily by supernova explosions.…