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Simulating tidal streams in a high resolution dark matter halo
Wayne Ngan, Brandon Bozek, Raymond G. Carlberg +3
We simulate tidal streams in the presence and absence of substructures inside the zero redshift snapshot of the Via Lactea II (VL-2) simulation. A halo finder is used to remove and…
Signatures of Kinematic Substructure in the Galactic Stellar Halo
Mariangela Lisanti, David N. Spergel, Piero Madau
Tidal debris from infalling satellites can leave observable structure in the phase-space distribution of the Galactic halo. Such substructure can be manifest in the spatial and/or…
The photoheating of the intergalactic medium in synthesis models of the UV background
Ewald Puchwein, James S. Bolton, Martin G. Haehnelt +3
We compare cosmological hydrodynamical simulations combined with the homogeneous metagalactic UV background (UVB) of Haardt & Madau (2012) (HM2012) to observations of the Lyman-alp…
Building Late-Type Spiral Galaxies by In-Situ and Ex-Situ Star Formation
Annalisa Pillepich, Piero Madau, Lucio Mayer
We analyze the formation and evolution of the stellar components in "Eris", a 120 pc-resolution cosmological hydrodynamic simulation of a late-type spiral galaxy. The simulation in…
Evidence of patchy hydrogen reionization from an extreme Ly trough below redshift six
George D. Becker, James S. Bolton, Piero Madau +3
We report the discovery of an extremely long (110 Mpc/) and dark () Ly trough extending down to towards the $z_{\rm em} \simeq 6.0…
The History of R-Process Enrichment in the Milky Way
Sijing Shen, Ryan Cooke, Enrico Ramirez-Ruiz +3
We investigate the production sites and the enrichment history of -process elements in the Galaxy, as traced by the [Eu/Fe] ratio, using the high resolution, cosmological zoom-i…