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Forming a Large Disc Galaxy from a z<1 Major Merger
F. Governato, C. B. Brook, A. M. Brooks +8
Using high resolution SPH simulations in a fully cosmological Lambda CDM context we study the formation of a bright disk dominated galaxy that originates from a "wet" major merger…
The Role of Cold Flows in the Assembly of Galaxy Disks
A. M. Brooks, F. Governato, T. Quinn +2
We use high resolution cosmological hydrodynamical simulations to demonstrate that cold flow gas accretion, particularly along filaments, modifies the standard picture of gas accre…
Damped Lyman Alpha Systems in Galaxy Formation Simulations
Andrew Pontzen, Fabio Governato, Max Pettini +6
We investigate the population of z=3 damped Lyman alpha absorbers (DLAs) in a recent series of high resolution galaxy formation simulations. The simulations are of interest because…
The Formation of Polar Disk Galaxies
Chris B. Brook, Fabio Governato, Thomas Quinn +5
Polar Ring Galaxies, such as NGC4650A, are a class of galaxy which have two kinematically distinct components that are inclined by almost 90 degrees to each other. These striking g…
The Origin and Evolution of the Mass-Metallicity Relationship for Galaxies: Results from Cosmological N-Body Simulations
A. M. Brooks, F. Governato, C. M. Booth +5
We examine the origin and evolution of the mass-metallicity relationship (MZR, M-Z) for galaxies using high resolution cosmological SPH + N-Body simulations that include a physical…
Testing Rotational Mixing Predictions with New Boron Abundances in Main Sequence B-type Stars
J. T. Mendel, K. A. Venn, C. R. Proffitt +2
(Abridged) New boron abundances for seven main-sequence B-type stars are determined from HST STIS spectroscopy around the BIII 2066A line. Boron abundances provide a unique and cri…
The Milky Way Tomography with SDSS: I. Stellar Number Density Distribution
Mario Juric, Zeljko Ivezic, Alyson Brooks +23
Abridged: We estimate the distances to ~48 million stars detected by the Sloan Digital Sky Survey and map their 3D number density distribution in 100 < D < 20 kpc range over 6,500…
The UV, Optical, and IR Properties of SDSS Sources Detected by GALEX
Marcel A. Agueros, Zeljko Ivezic, Kevin R. Covey +18
We discuss the UV, optical, and IR properties of the SDSS sources detected by GALEX as part of its All-sky Imaging Survey Early Release Observations. Virtually all of the GALEX sou…
The small-scale structure of the Magellanic Stream
S. Stanimirovic, J. M. Dickey, M. Krco +1
We have mapped two regions at the northern tip of the Magellanic Stream in neutral hydrogen 21-cm emission using the Arecibo telescope. The new data are used to study the morpholog…
Boron in the Small Magellanic Cloud: A Novel Test of Light Element Production
A. M. Brooks, K. A. Venn, D. L. Lambert +3
Hubble Space Telescope STIS observations of the B III resonance line at 2066A have been obtained and analyzed for two Small Magellanic Cloud (SMC) B-type stars. While boron is not…
The small-scale structure of the Magellanic Stream
Snezana Stanimirovic, John M. Dickey, Alyson M. Brooks
We have mapped in neutral hydrogen (HI) two regions at the northern tip of the Magellanic Stream, known as MS V and MS VI, using the Arecibo telescope. The small-scale structure of…
Boron Abundances in Main Sequence B-type Stars: A Test of Rotational Depletion during Main Sequence Evolution
K. A. Venn, A. M. Brooks, D. L. Lambert +4
Boron abundances have been derived for seven main sequence B-type stars from HST STIS spectra around the B III 2066 A line. In two stars, boron appears to be undepleted with respec…