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Bars in dark matter-dominated dwarf galaxy discs
A. Marasco, K. A. Oman, J. F. Navarro +2
We study the shape and kinematics of simulated dwarf galaxy discs in the APOSTLE suite of CDM cosmological hydrodynamical simulations. We find that a large fraction of these gas…
SYGMA: Stellar Yields for Galactic Modeling Applications
Christian Ritter, Benoit Côté, Falk Herwig +2
The stellar yields for galactic modeling applications (SYGMA) code is an open-source module that models the chemical ejecta and feedback of simple stellar populations (SSPs). It is…
Is the Milky Way still breathing? RAVE-Gaia streaming motions
I. Carrillo, I. Minchev, G. Kordopatis +26
We use data from the Radial Velocity Experiment (RAVE) and the Tycho-Gaia astrometric solution catalogue (TGAS) to compute the velocity fields yielded by the radial (VR), azimuthal…
The innate origin of radial and vertical gradients in a simulated galaxy disc
Julio F. Navarro, Cameron Yozin, Nic Loewen +6
We examine the origin of radial and vertical gradients in the age/metallicity of the stellar component of a galaxy disc formed in the APOSTLE cosmological hydrody- namical simulati…
Chemical Mapping of the Milky Way With The Canada-France Imaging Survey: A Non-parametric Metallicity-Distance Decomposition of the Galaxy
Rodrigo Ibata, Alan McConnachie, Jean-Charles Cuillandre +41
We present the chemical distribution of the Milky Way, based on 2,900 of -band photometry taken as part of the Canada-France Imaging Survey. When complete, this…
The Canada-France Imaging Survey: First results from the u-band component
Rodrigo Ibata, Alan McConnachie, Jean-Charles Cuillandre +41
The Canada-France Imaging Survey (CFIS) will map the northern high Galactic latitude sky in the -band ("CFIS-u", 10,000) and in the -band ("CFIS-r", 5,000$\,…
The "Building Blocks" of Stellar Halos
Kyle A. Oman, Else Starkenburg, Julio F. Navarro
The stellar halos of galaxies encode their accretion histories. In particular, the median metallicity of a halo is determined primarily by the mass of the most massive accreted obj…
The vertical structure of gaseous galaxy discs in cold dark matter halos
Alejandro Benitez-Llambay, Julio F. Navarro, Carlos S. Frenk +1
We study the vertical structure of polytropic, , centrifugally-supported gaseous discs embedded in cold dark matter (CDM) halos. At fixed radius , the shape of the…
The core-cusp problem: a matter of perspective
Anna Genina, Alejandro Benitez-Llambay, Carlos S. Frenk +6
The existence of two kinematically and chemically distinct stellar subpopulations in the Sculptor and Fornax dwarf galaxies offers the opportunity to constrain the density profile…
Improved distances and ages for stars common to TGAS and RAVE
Paul J. McMillan, Georges Kordopatis, Andrea Kunder +15
We combine parallaxes from the first Gaia data release with the spectrophotometric distance estimation framework for stars in the fifth RAVE survey data release. The combined dista…
Tidal stripping and the structure of dwarf galaxies in the Local Group
Azadeh Fattahi, Julio F. Navarro, Carlos S. Frenk +3
The shallow faint-end slope of the galaxy mass function is usually reproduced in CDM galaxy formation models by assuming that the fraction of baryons that turns into stars drops…
Non-circular motions and the diversity of dwarf galaxy rotation curves
Kyle A. Oman, Antonino Marasco, Julio F. Navarro +3
We use mock interferometric HI measurements and a conventional tilted-ring modelling procedure to estimate circular velocity curves of dwarf galaxy discs from the APOSTLE suite of…
The Pristine survey I: Mining the Galaxy for the most metal-poor stars
Else Starkenburg, Nicolas Martin, Kris Youakim +22
We present the Pristine survey, a new narrow-band photometric survey focused on the metallicity-sensitive Ca H & K lines and conducted in the northern hemisphere with the wide-fiel…
Climbing the cosmic ladder with stellar twins in RAVE with Gaia
P. Jofre, G. Traven, K. Hawkins +17
We apply the twin method to determine parallaxes to 232,545 stars of the RAVE survey using the parallaxes of Gaia DR1 as a reference. To search for twins in this large dataset, we…
Very metal-poor stars observed by the RAVE survey
G. Matijevič, C. Chiappini, E. K. Grebel +18
We present a novel analysis of the metal-poor star sample in the complete Radial Velocity Experiment (RAVE) Data Release 5 catalog with the goal of identifying and characterizing a…