7 papers
Testing warm dark matter with kinematics of the smallest galaxies
M. Sten Delos, Niusha Ahvazi, Andrew Benson
Every dark matter halo forms with a density cusp at its center. For warm dark matter (WDM), these prompt cusps can be massive enough to influence the kinematic…
Correlation between baryonic process and galaxy assembly bias
Zilan Xiao, Junyu Hua, Zhongxu Zhai +2
Galaxy assembly bias (GAB) is the dependence of galaxy clustering on secondary properties beyond halo mass. In this work, we study the connections between GAB and baryonic processe…
The pre-infall bias of subhalos
M. Sten Delos, Andrew Benson
Dark matter halos destined to fall into a more massive host differ from typical field halos of the same mass even before infall. In cosmological simulations, we find that the proge…
The Curious Case of Centaurus A II: On the Subject of the Quenched satellites
Sachi Weerasooriya, Mia Sauda Bovill, Matthew A. Taylor +6
The satellite system of Centaurus A presents a curious cosmological puzzle: while the global population is consistent with theoretical expectations, its inner regions (d<150 kpc) e…
Stellar Mass Growth in the First Galaxies: Theory and Observation
Alan Dressler, Andrew Benson
We compare the growth in stellar mass of galaxies in the epoch with predictions of a semi-analytic galaxy formation model - Galacticus. In contrast to diverse and controve…
The abundance and properties of the lowest luminosity dwarf galaxies around the Milky Way: Insights from Semi-Analytic Models
Niusha Ahvazi, Andrew B. Pace, Christopher T. Garling +11
We investigate the formation and observable properties of faint satellite galaxies (M$_\rm V > -3$) in Milky Way-like halos using the semi-analytic galaxy formation model Galacticu…