137 citations · 514 across the 11 of their papers we have counts for
11 papers
Mixing stochasticity relinquishes evidence for magnetorotational hypernovae
Anmol Aggarwal, Ralph Schoenrich
A recent work claimed by fitting the observed elemental abundance pattern of a halo star with the total yields from single super-/hypernova events that only a magnetorotational hyp…
An unexplored enrichment stochasticity and its implications for stellar abundance patterns
Anmol Aggarwal, Ralph Schoenrich
Extremely low metallicity stars are intensely studied as they take observations the closest to the very first generations of stars in the universe. Widely assumed to be enriched by…
Radial Wave in the Galactic Disk: New Clues to Discriminate Different Perturbations
Chengye Cao, Zhao-Yu Li, Ralph Schönrich +1
Decoding the key dynamical processes that shape the Galactic disk structure is crucial for reconstructing the Milky Way's evolution history. The second Gaia data release unveils a…
The K2 Galactic Archaeology Program Data Release 2: Asteroseismic results from campaigns 4, 6, & 7
Joel C. Zinn, Dennis Stello, Yvonne Elsworth +18
Studies of Galactic structure and evolution have benefitted enormously from Gaia kinematic information, though additional, intrinsic stellar parameters like age are required to bes…
Galactic Bar Resonances Inferred from Kinematically Hot Stars in Gaia EDR3
Daisuke Kawata, Junichi Baba, Jason A. S. Hunt +5
Using a numerical simulation of an isolated barred disc galaxy, we first demonstrate that the resonances of the inner bar structure induce more prominent features in the action spa…
Jeans modelling of the Milky Way's nuclear stellar disc
Mattia C. Sormani, John Magorrian, Francisco Nogueras-Lara +4
The nuclear stellar disc (NSD) is a flattened stellar structure that dominates the gravitational potential of the Milky Way at Galactocentric radii $30 \lesssim R \lesssim 300{\, \…
Resonance sweeping by a decelerating Galactic bar
Rimpei Chiba, Jennifer K. S. Friske, Ralph Schönrich
We provide the first quantitative evidence for the deceleration of the Galactic bar from local stellar kinematics in agreement with dynamical friction by a typical dark matter halo…
The Tilt of the Local Velocity Ellipsoid as Seen by Gaia
A. Everall, N. W. Evans, V. Belokurov +1
The Gaia Radial Velocity Spectrometer (RVS) provides a sample of 7,224,631 stars with full six-dimensional phase space information. Bayesian distances of these stars are available…
The chemical evolution of r-process elements from neutron star mergers: the role of a 2-phase interstellar medium
Ralph Schönrich, David H. Weinberg
Neutron star mergers (NM) are a plausible source of heavy r-process elements such as Europium, but previous chemical evolution models have either failed to reproduce the observed E…
The origin of the Gaia phase-plane spiral
James Binney, Ralph Schoenrich
A simple model is presented of the formation of the spiral the (z,v_z) phase plane of solar-neighbourhood stars that was recently discovered in Gaia data. The key is that the frequ…
Two chemically similar stellar overdensities on opposite sides of the plane of the Galaxy
Maria Bergemann, Branimir Sesar, Judith G. Cohen +9
Our Galaxy is thought to have undergone an active evolutionary history dominated by star formation, the accretion of cold gas, and, in particular, mergers up to 10 gigayear ago. Th…