8 papers
The impact of a close stellar encounter on the Edgeworth-Kuiper Belt
Alice C. Quillen, David E. Trilling, Eric G. Blackman
We numerically investigate the possibility that a close stellar encounter could account for the high inclinations of the Kuiper belt, as originally proposed by Ida, Larwood and Bur…
The Capture of Particles by Chaotic Resonances During Orbital Migration
A. C. Quillen
Because a chaotic zone can reduce the long timescale capture probabilities and cause catastrophic events such as close encounters with a planet or star during temporary capture, th…
The saturation of disk heating in the solar neighborhood and evidence for a merger 9 Gyrs ago
Alice C. Quillen, Donald R. Garnett
We re-examine the age-velocity dispersion relation in the solar neighborhood using improved stellar age estimates that are based on Hipparcos parallaxes and recent stellar evolutio…
Production of star-grazing and impacting planetesimals via orbital migration of extrasolar planets : Stellar metallicity enhancement in young extrasolar planetary systems
A. C. Quillen, M. Holman
During orbital migration of a giant extrasolar planet via ejection of planetesimals (Murray et al.~1998), inner mean motion resonances can be strong enough to cause planetesimals t…
Heavy Bars and Light Spirals -- Taking Advantage of Asymmetries in Galaxies
A. C. Quillen
I summarize a series of studies where the underlying theme is to exploit non-axisymmetry disk structures such as bars and spiral arms. By measuring the strength of gravitational fo…
NGC 2915 -- A Galaxy with a Dark or Faded Massive Disk?
A. C. Quillen
NGC 2915 is a remarkable blue compact dwarf galaxy which contains an inner HI bar and strong spiral structure in its HI disk extending well beyond its optical disk. We propose here…