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The Formation of Massive, Compact Galaxies at z=2 in the Illustris Simulation
Sarah Wellons, Paul Torrey, Chung-Pei Ma +13
Massive, quiescent galaxies at high redshift have been found to be considerably more compact than galaxies of similar mass in the local universe. How these compact galaxies formed…
The colors of satellite galaxies in the Illustris Simulation
Laura V. Sales, Mark Vogelsberger, Shy Genel +8
Observationally, the fraction of blue satellite galaxies decreases steeply with host halo mass, and their radial distribution around central galaxies is significantly shallower in…
Sussing Merger Trees : The Impact of Halo Merger Trees on Galaxy Properties in a Semi-Analytic Model
Jaehyun Lee, Sukyoung K. Yi, Pascal J. Elahi +13
A halo merger tree forms the essential backbone of a semi-analytic model for galaxy formation and evolution. Recent studies have pointed out that extracting merger trees from numer…
Halo Mass and Assembly History Exposed in the Faint Outskirts: the Stellar and Dark Matter Haloes of Illustris Galaxies
Annalisa Pillepich, Mark Vogelsberger, Alis Deason +9
We use the Illustris Simulations to gain insight into the build-up of the outer, low-surface brightness regions which surround galaxies. We characterize the stellar haloes by means…
Introducing the Illustris Project: the evolution of galaxy populations across cosmic time
Shy Genel, Mark Vogelsberger, Volker Springel +6
We present an overview of galaxy evolution across cosmic time in the Illustris Simulation. Illustris is an N-body/hydrodynamical simulation that evolves 2*1820^3 resolution element…
Sussing Merger Trees: the influence of the halo finder
Santiago Avila, Alexander Knebe, Frazer R. Pearce +9
Merger tree codes are routinely used to follow the growth and merger of dark matter haloes in simulations of cosmic structure formation. Whereas in Srisawat et. al. we compared the…
Periodic Radio Continuum Emission Associated with the beta Cephei Star V2187 Cyg
Mauricio Tapia, Luis F. Rodriguez, Gagik Tovmassian +4
We present new optical time-resolved photometry and medium-resolution spectroscopy of V2187 Cyg. We confirm its classification as a beta Cephei star based on sinusoidal light varia…