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32 papers · 2 filters
Imaging the Lyman-alpha Forest
Andrew Gould, David H. Weinberg
We show that it is now possible to image optically thick $\lya$ clouds in fluorescent $\lya$ emission with a relatively long (hr) integration on a large (m) tel…
Results from Monitoring the Broad-Line Radio Galaxy 3C 390.3
K. M. Leighly, M. Dietrich, E. Waltman +6
During 1995, the broad-line radio galaxy 3C 390.3 is the subject of a multi-wavelength monitoring campaign comprised of ROSAT HRI, IUE, and ground based optical, infrared and radio…
A Deep Multicolor Survey II. Initial Spectroscopy and Comparison With Expected Quasar Number Counts
Patrick B. Hall, Patrick S. Osmer, Richard F. Green +2
We have used the KPNO 4-meter Mayall telescope to image 0.83 square degrees of sky in six fields at high galactic latitude in six filters spanning 3000-10000Å to magnitude limits r…
A Deep Multicolor Survey I. Imaging Observations and Catalog of Stellar Objects
Patrick B. Hall, Patrick S. Osmer, Richard F. Green +2
We have used the KPNO 4-meter Mayall telescope to image 0.83 square degrees of sky in six fields at high galactic latitude in six filters spanning 3000-10000Å to magnitude limits r…
Small Scale Structure and High Redshift HI
David H. Weinberg, Lars Hernquist, Neal Katz +1
Cosmological simulations with gas dynamics suggest that the Lyman-alpha forest is produced mainly by "small scale structure" --- filaments and sheets that are the high redshift ana…
Adaptive Smoothed Particle Hydrodynamics: Methodology II
J. Michael Owen, Jens V. Villumsen, Paul R. Shapiro +1
This paper presents an alternative formulation of the ASPH algorithm for evolving anisotropic smoothing kernels, in which the geometric approach of Shapiro et al. (1996; Paper I) i…