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7 papers · 2 filters
Spirality: A Novel Way to Measure Spiral Arm Pitch Angle
Douglas W. Shields, Benjamin Boe, Casey Pfountz +6
We present the MATLAB code Spirality, a novel method for measuring spiral arm pitch angles by fitting galaxy images to spiral templates of known pitch. Computation time is typicall…
Global Properties of Neutral Hydrogen in Compact Groups
Lisa May Walker, Kelsey E. Johnson, Sarah C. Gallagher +5
Compact groups of galaxies provide a unique environment to study the evolution of galaxies amid frequent gravitational encounters. These nearby groups have conditions similar to th…
ZFIRE: Galaxy Cluster Kinematics, H Star Formation Rates, and Gas-Phase Metallicities of XMM-LSS J02182-05102 at z=1.6233
Kim-Vy H. Tran, Themiya Nanayakkara, Tiantian Yuan +11
We spectroscopically survey the galaxy cluster XMM-LSS J02182-05102 (hereafter IRC 0218) using LRIS (optical) and MOSFIRE (near-infrared) on Keck I as part of the ZFIRE survey. IRC…
Galaxies Probing Galaxies at High Resolution: Co-Rotating Gas Associated with a Milky Way Analog at z=0.4
Aleksandar M. Diamond-Stanic, Alison L. Coil, John Moustakas +5
We present results on gas flows in the halo of a Milky Way-like galaxy at z=0.413 based on high-resolution spectroscopy of a background galaxy. This is the first study of circumgal…
Preprocessing Among the Infalling Galaxy Population of EDisCS Clusters
Dennis W. Just, Matthew Kirby, Dennis Zaritsky +15
We present results from a low-resolution spectroscopic survey for 21 galaxy clusters at selected from the ESO Distant Cluster Survey. We measured spectra using the…
Testing the Modern Merger Hypothesis via the Assembly of Massive Blue Elliptical Galaxies in the Local Universe
Tim Haines, D. H. McIntosh, S. F. Sánchez +2
The modern merger hypothesis offers a method of forming a new elliptical galaxy through merging two equal-mass, gas-rich disk galaxies fuelling a nuclear starburst followed by effi…