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22 papers · 2 filters
An Update on Monitoring Stellar Orbits in the Galactic Center
Stefan Gillessen, Philipp Plewa, Frank Eisenhauer +9
Using 25 years of data from uninterrupted monitoring of stellar orbits in the Galactic Center, we present an update of the main results from this unique data set: A measurement of…
The Nature of Massive Transition Galaxies in CANDELS, GAMA, and Cosmological Simulations
Viraj Pandya, Ryan Brennan, Rachel S. Somerville +25
We explore observational and theoretical constraints on how galaxies might transition between the "star-forming main sequence" (SFMS) and varying "degrees of quiescence" out to $z=…
The AGORA High-Resolution Galaxy Simulations Comparison Project. II: Isolated Disk Test
Ji-hoon Kim, Oscar Agertz, Romain Teyssier +40
Using an isolated Milky Way-mass galaxy simulation, we compare results from 9 state-of-the-art gravito-hydrodynamics codes widely used in the numerical community. We utilize the in…
Quenching of Satellite Galaxies at the Outskirts of Galaxy Clusters
Elad Zinger, Avishai Dekel, Andrey V. Kravtsov +1
We find, using cosmological simulations of galaxy clusters, that the hot X-ray emitting intra-cluster medium (ICM) enclosed within the outer accretion shock extends out to $R_{\rm…
Dark-Matter Halo Profiles of a General Cusp/Core with Analytic Velocity and Potential
Avishai Dekel, Guy Ishai, Aaron A. Dutton +1
We present useful functions for the profiles of dark-matter (DM) haloes with a free inner slope, from cusps to cores, where the profiles of density, mass-velocity and potential are…
Cold Fronts and Shocks Formed by Gas Streams in Galaxy Clusters
Elad Zinger, Avishai Dekel, Yuval Birnboim +3
Cold Fronts and shocks are hallmarks of the complex intra-cluster medium (ICM) in galaxy clusters. They are thought to occur due to gas motions within the ICM and are often attribu…