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The Smooth MgII gas distribution through the interstellar/extra-planar/halo interface
Glenn G. Kacprzak, Jeff Cooke, Christopher W. Churchill +2
We report the first measurements of MgII absorption systems associated with spectroscopically confirmed z~0.1 star-forming galaxies at projected distances of D<6kpc. We demonstrate…
MAGIICAT I. The MgII Absorber-Galaxy Catalog
Nikole M. Nielsen, Christopher W. Churchill, Glenn G. Kacprzak +1
We describe the MgII Absorber-Galaxy Catalog, MAGIICAT, a compilation of 182 spectroscopically identified intermediate redshift (0.07 < z < 1.1) galaxies with measurements of MgII…
The Redshift Distribution of Intervening Weak MgII Quasar Absorbers and a Curious Dependence on Quasar Luminosity
Jessica L. Evans, Christopher W. Churchill, Michael T. Murphy +2
We have identified 469 MgII doublet systems having W_r >= 0.02 Å in 252 Keck/HIRES and UVES/VLT quasar spectra over the redshift range 0.1 < z < 2.6. Using the largest sample yet o…
MAGIICAT II. General Characteristics of the MgII Absorbing Circumgalactic Medium
Nikole M. Nielsen, Christopher W. Churchill, Glenn G. Kacprzak
We examine the MgII absorbing circumgalactic medium (CGM) for the 182 intermediate redshift (0.072 < z < 1.120) galaxies in the "MgII Absorber-Galaxy Catalog" (MAGIICAT, Nielsen et…
The Self-Similarity of the Circumgalactic Medium with Galaxy Virial Mass: Implications for Cold-Mode Accretion
Christopher W. Churchill, Nikole M. Nielsen, Glenn G. Kacprzak +1
We apply halo abundance matching to obtain galaxy virial masses, M_h, and radii, Rvir, for the 183 isolated galaxies in the "MgII Absorber-Galaxy Catalog" (MAGIICAT, Nielsen et al.…
Quenched Cold Accretion of a Large Scale Metal-Poor Filament due to Virial Shocking in the Halo of a Massive z=0.7 Galaxy
Christopher W. Churchill, Glenn G. Kacprzak, Charles C. Steidel +4
Using HST/COS/STIS and HIRES/Keck high-resolution spectra, we have studied a remarkable HI absorbing complex at z=0.672 toward the quasar Q1317+277. The HI absorption has a velocit…
Tracing Outflows and Accretion: A Bimodal Azimuthal Dependence of MgII Absorption
G. G. Kacprzak, C. W. Churchill, N. M. Nielsen
We report a bimodality in the azimuthal angle distribution of gas around galaxies as traced by MgII absorption: Halo gas prefers to exist near the projected galaxy major and minor…