681 citations · 8.1k across the 107 of their papers we have counts for
12 papers · 1 filter
Peanut-shaped metallicity distributions in bulges of edge-on galaxies: the case of NGC 4710
Oscar A. Gonzalez, Victor P. Debattista, Melissa Ness +2
Bulges of edge-on galaxies are often boxy/peanut-shaped (B/PS), and unsharp masks reveal the presence of an X shape. Simulations show that these shapes can be produced by dynamical…
Separation of Stellar Populations by an Evolving Bar: Implications for the Bulge of the Milky Way
Victor P. Debattista, Melissa Ness, Oscar A. Gonzalez +3
We present a novel interpretation of the previously puzzling different behaviours of stellar populations of the Milky Way's bulge. We first show, by means of pure N-body simulation…
The RAVE-on catalog of stellar atmospheric parameters and chemical abundances for chemo-dynamic studies in the Gaia era
Andrew R. Casey, Keith Hawkins, David W. Hogg +24
The orbits, atmospheric parameters, chemical abundances, and ages of individual stars in the Milky Way provide the most comprehensive illustration of galaxy formation available. Th…
A radial age gradient in the geometrically thick disk of the Milky Way
Marie Martig, Ivan Minchev, Melissa Ness +2
In the Milky Way, the thick disk can be defined using individual stellar abundances, kinematics, or age; or geometrically, as stars high above the mid-plane. In nearby galaxies, wh…
Masses and Ages for 230,000 LAMOST Giants, via Their Carbon and Nitrogen Abundances
Anna Y. Q. Ho, Hans-Walter Rix, Melissa K. Ness +3
We measure carbon and nitrogen abundances to 0.1 dex for 450,000 giant stars from their low-resolution (R1800) LAMOST DR2 survey spectra. We use these [C/M] and [N…
Dynamical modelling of the Galactic bulge and bar: the Milky Way's bar pattern speed, stellar, and dark matter mass distribution
Matthieu Portail, Ortwin Gerhard, Christopher Wegg +1
We construct a large set of dynamical models of the galactic bulge, bar and inner disk using the Made-to-Measure method. Our models are constrained to match the red clump giant den…