939 citations · 12.8k across the 161 of their papers we have counts for
10 papers · 1 filter
The Morphology of Collisionless Galactic Rings Exterior to Evolving Bars
Micaela Bagley, Ivan Minchev, Alice C. Quillen
The morphology of the outer rings of early-type spiral galaxies is compared to integrations of massless collisionless particles initially in nearly circular orbits. Particles are p…
The Radial Velocity Experiment (RAVE): second data release
T. Zwitter, A. Siebert, U. Munari +51
We present the second data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities (RVs) and stellar atmosphere parameters…
Towards a Spectral Technique for Determining Material Geometry Around Evolved Stars: Application to HD 179821
J. Nordhaus, I. Minchev, B. Sargent +6
HD 179821 is an evolved star of unknown progenitor mass range (either post-Asymptotic Giant Branch or post-Red Supergiant) exhibiting a double peaked spectral energy distribution (…
Constraining Spiral Structure Parameters through Galactic Pencil-beam and Large-scale Radial Velocity Surveys
I. Minchev, A. Quillen
We investigate the effect of spiral structure on the Galactic disk as viewed by pencil beams centered on the Sun, relevant to upcoming surveys such as ARGOS, SEGUE, and GAIA. We cr…
New Constraints on the Galactic Bar
I. Minchev, J. Nordhaus, A. C. Quillen
Previous work has related the Galactic Bar to structure in the local stellar velocity distribution. Here we show that the Bar also influences the spatial gradients of the velocity…
The Effect of Spiral Structure on the Measurements of the Oort Constants
I. Minchev, A. Quillen
We perform test-particle simulations in a 2D, differentially rotating stellar disk, subjected to a two-armed steady state spiral density wave perturbation in order to estimate the…
The Radial Velocity Experiment (RAVE): first data release
M. Steinmetz, T. Zwitter, A. Siebert +51
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temper…
Disk heating by more than one spiral density wave
I. Minchev, A. C. Quillen
We consider a differentially rotating, 2D stellar disk perturbed by two steady state spiral density waves moving at different patterns speeds. Our investigation is based on direct…
The Effect of Spiral Structure on the Stellar Velocity Distribution in the Solar Neighborhood
A. C. Quillen, Ivan Minchev
Clumps in the solar neighborhood's stellar velocity distribution could be caused by spiral density waves. In the solar neighborhood, stellar velocities corresponding to orbits that…
Driving spiral arms in the circumstellar disks of HD 100546 and HD 141569A
Alice C. Quillen, Peggy Varniere, Ivan Minchev +1
With 2D hydrodynamical simulations of disks perturbed externally by stars, brown dwarfs or planets we investigate possible scenarios that can account for the spiral structure in ci…