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The stellar mass assembly of galaxies in the Illustris simulation: growth by mergers and the spatial distribution of accreted stars
Vicente Rodriguez-Gomez, Annalisa Pillepich, Laura V. Sales +9
We use the Illustris simulation to study the relative contributions of in situ star formation and stellar accretion to the build-up of galaxies over an unprecedentedly wide range o…
On the Assembly of Dwarf Galaxies in Clusters and their Efficient Formation of Globular Clusters
Pouria A. Mistani, Laura V. Sales, Annalisa Pillepich +6
Galaxy clusters contain a large population of low mass dwarf elliptical galaxies whose exact origin is unclear: their colors, structural properties and kinematics differ substantia…
Modeling Galactic Conformity with the Color-Halo Age Relation in the Illustris Simulation
Aaron D. Bray, Annalisa Pillepich, Laura V. Sales +9
Comparisons between observational surveys and galaxy formation models find that the mass of dark matter haloes can largely explain galaxies' stellar mass. However, it remains uncer…
Recoiling black holes: prospects for detection and implications of spin alignment
Laura Blecha, Debora Sijacki, Luke Zoltan Kelley +6
Supermassive black hole (BH) mergers produce powerful gravitational wave (GW) emission. Asymmetry in this emission imparts a recoil kick to the merged BH, which can eject the BH fr…
An analysis of the evolving comoving number density of galaxies in hydrodynamical simulations
Paul Torrey, Sarah Wellons, Francisco Machado +9
The cumulative comoving number-density of galaxies as a function of stellar mass or central velocity dispersion is commonly used to link galaxy populations across different epochs.…
Lens galaxies in the Illustris simulation: power-law models and the bias of the Hubble constant from time-delays
Dandan Xu, Dominique Sluse, Peter Schneider +4
A power-law density model, i.e., has been commonly employed in strong gravitational lensing studies, including the so-called time-delay technique used to inf…