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Mg II Absorption at 2<z<7 with Magellan/FIRE, III. Full Statistics of Absorption Towards 100 High-Redshift QSOs
Shi-Fan S. Chen, Robert A. Simcoe, Paul Torrey +12
We present final statistics from a survey for intervening MgII absorption towards 100 quasars with emission redshifts between and . Using infrared spectra from Mag…
Why do high-redshift galaxies show diverse gas-phase metallicity gradients?
Xiangcheng Ma, Philip F. Hopkins, Robert Feldmann +3
Recent spatially resolved observations of galaxies at z=0.6-3 reveal that high-redshift galaxies show complex kinematics and a broad distribution of gas-phase metallicity gradients…
Massive Close Pairs Measure Rapid Galaxy Assembly in Mergers at High Redshift
Gregory F. Snyder, Jennifer M. Lotz, Vicente Rodriguez-Gomez +3
We compare mass-selected close pairs at z > 1 with the intrinsic galaxy merger rate in the Illustris Simulations. To do so, we construct three 140 arcmin^2 lightcone catalogs and m…
The role of mergers and halo spin in shaping galaxy morphology
Vicente Rodriguez-Gomez, Laura V. Sales, Shy Genel +10
Mergers and the spin of the dark matter halo are factors traditionally believed to determine the morphology of galaxies within a CDM cosmology. We study this hypothesis by consi…
The Califa and Hipass velocity function for all morphological galaxy types
S. Bekeraitė, C. J. Walcher, L. Wisotzki +17
The velocity function is a fundamental observable statistic of the galaxy population, similarly impor- tant as the luminosity function, but much more difficult to measure. In this…
About AGN ionization echoes, thermal echoes, and ionization deficits in low redshift Lyman-alpha blobs
Mischa Schirmer, Sangeeta Malhotra, Nancy A. Levenson +7
We report the discovery of 14 Lyman-alpha blobs (LABs) at z~0.3, existing at least 4-7 billion years later in the Universe than all other LABs known. Their optical diameters are 20…