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The First Observations of Low-Redshift Damped Lyman-α Systems with the Cosmic Origins Spectrograph: Chemical Abundances and Affiliated Galaxies
A. J. Battisti, J. D. Meiring, T. M. Tripp +6
We present Cosmic Origins Spectrograph (COS) measurements of metal abundances in eight 0.083<z<0.321 damped Lyman-α(DLA) and sub-damped Ly-α absorption systems serendipitously disc…
The Hidden Mass and Large Spatial Extent of a Poststarburst Galaxy Outflow
Todd M. Tripp, Joseph D. Meiring, J. Xavier Prochaska +9
Outflowing winds of multiphase plasma have been proposed to regulate the buildup of galaxies, but key aspects of these outflows have not been probed with observations. Using ultrav…
The Large, Oxygen-Rich Halos of Star-Forming Galaxies Are A Major Reservoir of Galactic Metals
Jason Tumlinson, Christopher Thom, Jessica K. Werk +11
The circumgalactic medium (CGM) is fed by galaxy outflows and accretion of intergalactic gas, but its mass, heavy element enrichment, and relation to galaxy properties are poorly c…
The COS-Halos Survey: Keck LRIS and Magellan MagE Optical Spectroscopy
Jessica K. Werk, J. Xavier Prochaska, Christopher Thom +4
We present high signal-to-noise optical spectra for 67 low-redshift (0.1 < z < 0.4) galaxies that lie within close projected distances (5 kpc < rho < 150 kpc) of 38 background UV-b…
The Gas-Galaxy Connection at z = 0.35: OVI and HI Absorption Towards J0943+0531
C. Thom, J. K. Werk, J. Tumlinson +4
We present observations of HI and OVI absorption systems proximate to a galaxy at z_gal = 0.3529. The absorption was detected serendipitously in Cosmic Origins Spectrograph observa…
Evidence for Cold Accretion: Primitive Gas Flowing onto a Galaxy at z~0.274
Joseph Ribaudo, Nicolas Lehner, J. Christopher Howk +5
We present UV and optical observations from the Cosmic Origins Spectrograph on the Hubble Space Telescope and Keck of a z= 0.27395 Lyman limit system (LLS) seen in absorption again…