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FIRE-2 simulations: physics versus numerics in galaxy formation
The Feedback In Realistic Environments (FIRE) project explores feedback in cosmological galaxy formation simulations. Previous FIRE simulations used an identical source code (“FIRE-1”) for…
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Not so lumpy after all: modelling the depletion of dark matter subhaloes by Milky Way-like galaxies
Among the most important goals in cosmology is detecting and quantifying small (M_(halo)≃10^(6−9) M⊙) dark matter (DM) subhaloes. Current probes around the Milky Way (MW) are most sensitive to such…
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Numerical experiments with rubble piles: equilibrium shapes and spins
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OPTICAL AND NEAR-INFRARED SPECTROSCOPY OF THE L SUBDWARF SDSS J125637.13–022452.4
Red optical and near-infrared spectroscopy are presented for SDSS J125637.13–022452.4, one of only four L subdwarfs reported to date. These data confirm the low-temperature, metal-poor nature of this…
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Predicting the LISA white dwarf binary population in the Milky Way with cosmological simulations
White dwarf binaries with orbital periods below 1 h will be the most numerous sources for the space-based gravitational wave detector Laser Interferometer Space Antenna (LISA). Based on thousands…
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REVISITING THE ROLE OF M31 IN THE DYNAMICAL HISTORY OF THE MAGELLANIC CLOUDS
We study the dynamics of the Magellanic Clouds in a model for the Local Group whose mass is constrained using the timing argument/two-body limit of the action principle. The goal is to evaluate the…
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The origin of the diverse morphologies and kinematics of Milky Way-mass galaxies in the FIRE-2 simulations.
TLDR
Hydrodynamic cosmological zoom-in simulations from the Feedback in Realistic Environments project are used to explore the morphologies and kinematics of 15 Milky Way (MW)-mass galaxies, finding the best predictor of morphology is the spin of the gas in the halo at the time the galaxy formed 1/2 of its stars.
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2MASS J06164006−6407194: THE FIRST OUTER HALO L SUBDWARF
We present the serendipitous discovery of an L subdwarf in the Two Micron All Sky Survey (2MASS) J06164006−6407194, in a search of the 2MASS for T dwarfs. Its spectrum exhibits features indicative of…
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The Local Group on FIRE: dwarf galaxy populations across a suite of hydrodynamic simulations
We present a new set of high-resolution hydrodynamic cosmological zoom-in simulations that apply the Feedback In Realistic Environments physics to both Local Group (LG)-like and isolated Milky Way…
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Star formation histories of dwarf galaxies in the FIRE simulations: dependence on mass and Local Group environment
We study star formation histories (SFHs) of 500 dwarf galaxies (stellar mass $M_\ast =10^5\!-\!10^9\, \rm {M}_\odot$) from FIRE-2 cosmological zoom-in simulations. We compare dwarfs around…
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