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What Determines the Incidence and Extent of MgII Absorbing Gas Around Galaxies?
Hsiao-Wen Chen, Vivienne Wild, Jeremy L. Tinker +4
We study the connections between on-going star formation, galaxy mass, and extended halo gas, in order to distinguish between starburst-driven outflows and infalling clouds that pr…
The clustering of massive galaxies at z~0.5 from the first semester of BOSS data
Martin White, M. Blanton, A. Bolton +25
We calculate the real- and redshift-space clustering of massive galaxies at z~0.5 using the first semester of data by the Baryon Oscillation Spectroscopic Survey (BOSS). We study t…
The incidence of cool gas in ~ 1e13 Msun halos
Jean-Rene Gauthier, Hsiao-Wen Chen, Jeremy Tinker
We present the first results of an ongoing spectroscopic follow-up of close luminous red galaxy (LRGs) and MgII λλ 2796,2803 absorber pairs for an initial sample of 15 photometrica…
An Empirical Characterization of Extended Cool Gas Around Galaxies Using MgII Absorption Features
Hsiao-Wen Chen, Jennifer E. Helsby, Jean-Rene Gauthier +3
We report results from a survey of MgII absorbers in the spectra of background QSOs that are within close angular distances to a foreground galaxy at z<0.5, using the Magellan Eche…
The Large Scale Bias of Dark Matter Halos: Numerical Calibration and Model Tests
Jeremy L. Tinker, Brant E. Robertson, Andrey V. Kravtsov +4
We measure the clustering of dark matter halos in a large set of collisionless cosmological simulations of the flat LCDM cosmology. Halos are identified using the spherical overden…