300 citations · 979 across the 14 of their papers we have counts for
14 papers
Redefining for multi-component discs of stars and gas
Kit George, Ralph Schönrich
We point out a fundamental mismatch in the stability parameter for Galactic discs: Toomre's defines the boundary between axisymmetric stability/instability, while simul…
Comment on 'a slightly oblate dark matter halo revealed by a retrograde precessing Galactic disk warp' by Huang et al
Walter Dehnen, Ralph Schönrich, Ronald Drimmel +3
Huang et al. (2024) measured the derivative of the phase of the Galactic warp traced by classical Cepheids with respect to their age and interpreted it as the…
JASMINE: Near-Infrared Astrometry and Time Series Photometry Science
Daisuke Kawata, Hajime Kawahara, Naoteru Gouda +86
Japan Astrometry Satellite Mission for INfrared Exploration (JASMINE) is a planned M-class science space mission by the Institute of Space and Astronautical Science, the Japan Aero…
Capture of interstellar objects II: by the Solar system
Walter Dehnen, Thomas O. Hands, Ralph Schönrich
Capture of interstellar objects (ISOs) into the Solar system is dominated by ISOs with asymptotic incoming speeds km\,s. The capture rate is proportional to th…
Metallicity-Suppressed Collapsars Cannot be the Dominant r-Process Source in the Milky Way
Jack Fraser, Ralph Schönrich
We develop a high-performance analytical model of Galactic Chemical Evolution, which accounts for delay time distributions and lock-up of stellar yields in a thermal-phased ISM. Th…
Oscillating dynamical friction on galactic bars by trapped dark matter
Rimpei Chiba, Ralph Schönrich
The dynamic evolution of galactic bars in standard CDM models is dominated by angular momentum loss to the dark matter haloes via dynamical friction. Traditional approximations…
On the kinematic signature of the Galactic warp as revealed by the LAMOST-TGAS data
Yang Huang, R. Schönrich, Xiaowei Liu +6
Using a sample of about 123,000 stars with accurate 3D velocity measurements from the LAMOST-TGAS data, we confirm the kinematic signature of the Galactic warp found by Schönrich &…
Assessing distances and consistency of kinematics in Gaia/TGAS
Ralph Schönrich, Michael Aumer
We apply the statistical methods by Schoenrich, Binney & Asplund to assess the quality of distances and kinematics in the RAVE-TGAS and LAMOST-TGAS samples of Solar neighbourhood s…
Age velocity dispersion relations and heating histories in disc galaxies
Michael Aumer, James Binney, Ralph Schönrich
We analyse the heating of stellar discs by non axisymmetric structures and giant molecular clouds (GMCs) in N-body simulations of growing disc galaxies. The analysis resolves long-…
The quiescent phase of galactic disc growth
Michael Aumer, James Binney, Ralph Schönrich
We perform a series of controlled N-body simulations of growing disc galaxies within non-growing, live dark matter haloes of varying mass and concentration. Our initial conditions…
Rings and Radial Waves in the Disk of the Milky Way
Yan Xu, Heidi Jo Newberg, Jeffrey L. Carlin +5
We show that in the anticenter region, between Galactic longitudes of , there is an oscillating asymmetry in the main sequence star counts on either side of…
Fundamental stellar parameters and metallicities from Bayesian spectroscopy. Application to low- and high-resolution spectra
Ralph Schönrich, Maria Bergemann
We present a unified framework to derive fundamental stellar parameters by combining all available observational and theoretical information for a star. The algorithm relies on the…
Radial Flows and Angular Momentum Conservation in Galactic Chemical Evolution
Thomas Bilitewski, Ralph Schönrich
We study the effects of radial flows on Galactic chemical evolution. A simple analytic scheme is developed prescribing the coupling of infall from the intergalactic medium and radi…
Galactic Rotation and Solar Motion from Stellar Kinematics
Ralph Schönrich
I present three methods to determine the distance to the Galactic centre R0, the solar azimuthal velocity in the Galactic rest frame Vg,\odot and hence the local circular speed Vc…