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Lyman Alpha Imaging of a Proto-Cluster Region at <z>=3.09
C. C. Steidel, K. L. Adelberger, A. E. Shapley +3
We present very deep imaging observations, through a narrow-band filter tuned to Lyman alpha at <z = 3.09>, of a volume containing a significant over-density of galaxies at this re…
Si and Mn Abundances in Damped Lya Systems with Low Dust Content
Max Pettini, Sara Ellison, Charles C. Steidel +2
We have measured the abundances of Zn, Si, Mn, Cr, Fe, and Ni in three damped Lyman alpha systems at redshifts z < 1 from high resolution echelle spectra of QSOs recorded with the…
The Unusual Infrared Object HDF-N J123656.3+621322
Mark Dickinson, Christopher Hanley, Richard Elston +11
We describe an object in the Hubble Deep Field North with very unusual near-infrared properties. It is readily visible in Hubble Space Telescope NICMOS images at 1.6um and from the…