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Formation of ultra-diffuse galaxies in the field and in galaxy groups
Fangzhou Jiang, Avishai Dekel, Jonathan Freundlich +4
We study ultra-diffuse galaxies (UDGs) in zoom in cosmological simulations, seeking the origin of UDGs in the field versus galaxy groups. We find that while field UDGs arise from d…
Linking galaxy structural properties and star formation activity to black hole activity with IllustrisTNG
Melanie Habouzit, Shy Genel, Rachel S. Somerville +11
We study the connection between active galactic nuclei (AGN) and their host galaxies through cosmic time in the large-scale cosmological IllustrisTNG simulations. We first compare…
CGM properties in VELA and NIHAO simulations; the OVI ionization mechanism: dependence on redshift, halo mass and radius
S. Roca-Fàbrega, A. Dekel, Y. Faerman +8
We study the components of cool and warm/hot gas in the circumgalactic medium (CGM) of simulated galaxies and address the relative production of OVI by photoionization versus colli…
Instability of Supersonic Cold Streams Feeding Galaxies III: Kelvin-Helmholtz Instability in Three Dimensions
Nir Mandelker, Daisuke Nagai, Han Aung +3
We study the effects of Kelvin-Helmholtz instability (KHI) on the cold streams that feed high-redshift galaxies through their hot haloes, generalizing our earlier analyses of a 2D…
The evolution of galaxy shapes in CANDELS: from prolate to oblate
Haowen Zhang, Joel R. Primack, S. M. Faber +9
We model the projected b/a-log a distributions of CANDELS main sequence star-forming galaxies, where a (b) is the semi-major (semi-minor) axis of the galaxy images. We find that sm…
On the Transition of the Galaxy Quenching Mode at 0.5<z<1 in CANDELS
F. S. Liu, Meng Jia, Hassen M. Yesuf +19
We investigate the galaxy quenching process at intermediate redshift using a sample of galaxies with between redshift 0.5 and 1.0 in all fiv…