The gas surrounding galaxies outside their disks or interstellar medium and inside their virial
radii is known as the circumgalactic medium (CGM). In recent years this component of …

Intergalactic space is filled with a pervasive medium of ionized gas, the intergalactic medium
(IGM). A residual neutral fraction is detected in the spectra of quasistellar objects at both low …

We present a detailed calculation of the propagation of AGN-like ionizing radiation through
the intergalactic space. We model the ionization state of absorbing clouds, and show that the …

We map the radial and azimuthal distribution of Mg ii gas within∼ 200 kpc (physical) of∼
4000 galaxies at redshifts 0.5< z< 0.9 using co-added spectra of more than 5000 …

We report results from a survey of Mg ii absorbers in the spectra of background quasi-stellar
objects (QSOs) that are within close angular distances to a foreground galaxy at z< 0.5 …

We present results of our Hubble Space Telescope Cycle 11 survey for low-redshift (z< 1.65)
damped Lyα (DLA) systems in the UV spectra of quasars selected from the Sloan Digital Sky …

We present an intermediate-resolution, high signal-to-noise ratio spectrum of the z= 2.7268
galaxy MS 1512-cB58 obtained with the Low Resolution Imaging Spectrograph (LRIS) on …

Is dark matter in spiral galaxies cold gas?; 1, observational constraints and dynamical clues
about galaxy evolution; 2, fractal Page 1 Page 2 Page 3 Send 0_@rint requests 20: D. Pfenniger …

We have obtained spectra of 103 low-and intermediate-redshift QSOs (roughly half of which
are radio sources) with a resolution of 4-6 A in order to investigate the statistics of Mg II …

We present some of the results of a large survey aimed at establishing the properties of
galaxies selected by their having produced detectable Mg~ II $\lambda\lambda 2796$, 2803 …