HST/ACS Emission Line Imaging of Low Redshift 3CR Radio Galaxies I: The Data (2009)
Tremblay, Grant R., Chiaberge, Marco, Sparks, William B., Baum, Stefi A., Allen, Mark G., Axon, David J., ...
We present 19 nearby (z
Olling, Rob P., Allen, Ron J., Anderson, Jay, Chaboyer, Brian C., Freedman, Wendy, Guhathakurta, Puragra, ...
Abridged: The golden age of astrophysics is upon us with both grand discoveries (extra-solar planets, dark matter, dark energy) and precision cosmology. Fundamental understanding of the working of...
The statistics of accelerations seen in radial velocity searches for planets (2008)
Radial velocity searches for extrasolar planets have discovered stars undergoing slow accelerations. The accelerations are likely due to one or more gas giant planets or brown dwarfs orbiting with...
Planet Migration through a Self-Gravitating Planetesimal Disk (2008)
Moore, Alexander J., Quillen, Alice C., Edgar, Richard G.
We simulate planet migration caused by interactions between planets and a planetesimal disk. We use an N-body integrator optimized for near-Keplerian motion that runs in parallel on a video graphics...
The Morphology of Collisionless Galactic Rings Exterior to Evolving Bars (2008)
Bagley, Micaela, Minchev, Ivan, Quillen, Alice C.
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 perturbed by a...
Outflow Driven Turbulence in Molecular Clouds (2008)
Carroll, Jonathan J., Frank, Adam, Blackman, Eric G., Cunningham, Andrew J., Quillen, Alice C.
In this paper we explore the relationship between protostellar outflows and turbulence in molecular clouds. Using 3-D numerical simulations we focus on the hydrodynamics of multiple outflows...
Protostellar Outflow Evolution in Turbulent Environments (2008)
Cunningham, Andrew J., Frank, Adam, Carroll, Jonathan, Blackman, Eric G., Quillen, Alice C.
The link between turbulence in star formatting environments and protostellar jets remains controversial. To explore issues of turbulence and fossil cavities driven by young stellar outflows we...
O'Dea, Christopher P., Baum, Stefi A., Privon, George, Noel-Storr, Jacob, Quillen, Alice C., Zufelt, Nicholas, ...
Quillen et al.(2007) presented an imaging survey with the {\it Spitzer Space Telescope} of 62 brightest cluster galaxies with optical line emission located in the cores of X-ray luminous clusters....
Christopher P. O’dea, Stefi A. Baum, George Privon, Jacob Noel-storr, Alice C. Quillen, Nicholas Zufelt, ...
Quillen et al.(2007) reported on an imaging survey with the Spitzer Space Telescope of 62 brightest cluster galaxies with optical line emission located in the cores of X-ray luminous clusters...
When is star formation episodic? A delay differential equation negative feedback model (2008)
Quillen, Alice C., Bland-Hawthorn, Joss
We introduce a differential equation for star formation in galaxies that incorporates negative feedback with a delay. When the feedback is instantaneous, solutions approach a self-limiting...
The radial velocity experiment (rave): second data release (2008)
Zwitter, Tomaz, Siebert, Arnaud, Munari, Ulisse, Freeman, Kenneth C., Siviero, Alessandro, Watson, Fred G., ...
We present the second data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature,...
The radial velocity experiment (RAVE): second data release (2008)
Zwitter, Tomaz, Siebert, Arnaud, Munari, Ulisse, Freeman, Kenneth C., Siviero, Alessandro, Watson, Fred G., ...
We present the second data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature,...
An infrared survey of brightest cluster galaxies: Paper I (2007)
Quillen, Alice C., Zufelt, Nicholas, Park, Jaehong, O'Dea, Christopher P., Baum, Stefi A., Privon, George, ...
We report on an imaging survey with the Spitzer Space Telescope of 62 brightest cluster galaxies with optical line emission. These galaxies are located in the cores of X-ray luminous clusters...
Spitzer IRS mapping of the central kpc of Centaurus A (2007)
Quillen, Alice C., Bland-Hawthorn, Joss, Green, Joel, Smith, J. D., Prasad, D. Amelia, Alonso-Herrero, Almudena, ...
We report on the results of infrared spectroscopic mapping observations carried out in the nuclear region of Centaurus A (NGC5128). The 500 pc bipolar dust shell discovered by Quillen et al.(2006) is...
The Total Number of Giant Planets in Debris Disks with Central Clearings (2007)
Faber, Peter, Quillen, Alice C.
Infrared spectra from the Spitzer Space Telescope (SSC) of many debris disks are well fit with a single black body temperature which suggest clearings within the disk. We assume that inside the...
Isophotal Structure and Dust Distribution in Radio-Loud Elliptical Galaxies (2007)
Tremblay, Grant R., Chiaberge, Marco, Donzelli, Carlos J., Quillen, Alice C., Capetti, Alessandro, Sparks, William B., ...
We investigate isophotal properties and dust morphology in the nuclear regions of 84 radio galaxies, imaged in the optical and near-infrared as part of Hubble Space Telescope snapshot surveys. We...
The Minimum Gap-opening Planet Mass in an Irradiated Circumstellar Accretion Disk (2007)
Edgar, Richard G., Quillen, Alice C., Park, Jaehong
We consider the minimum mass planet, as a function of radius, that is capable of opening a gap in an $\alpha$-accretion disk. We estimate that a half Jupiter mass planet can open a gap in a disk with...
Planetary embryos and planetesimals residing in thin debris disks (2007)
Quillen, Alice C., Morbidelli, Alessandro, Moore, Alex
We consider constraints on the planetesimal population residing in the disks of AU Microscopii, Beta Pictoris and Fomalhaut taking into account their observed thicknesses and normal disk opacities....
Diffusive low optical depth particle disks truncated by planets (2007)
Two dimensional particle disks in proximity to a planet are numerically integrated to determine when a planet in a circular orbit can truncate a particle disk. Collisions are treated by giving each...
Chaotic zone boundary for low free eccentricity particles near an eccentric planet (2006)
Quillen, Alice C., Faber, Peter
We consider particles with low free or proper eccentricity that are orbiting near planets on eccentric orbits. Via collisionless particle integration we numerically find the location of the boundary...
Predictions for a planet just inside Fomalhaut's eccentric ring (2006)
We propose that the eccentricity and sharpness of the edge of Fomalhaut's disk are due to a planet just interior to the ring edge. The collision timescale consistent with the disk opacity is long...
Outflow Driven Cavities: Numerical Simulations of Intermediaries of Protostellar Turbulence (2006)
Cunningham, Andrew J., Frank, Adam, Quillen, Alice C., Blackman, Eric G.
We investigate the evolution of fossil cavities produced by extinct YSO jets and wide angle outflows. Fossil cavities are ellipsoidal or cylindrical shells of swept-up of ambient (molecular cloud)...
Spitzer observations of the dusty warped disk of Centaurus A (2006)
Quillen, Alice C., Brookes, Mairi H., Keene, Jocelyn, Stern, Daniel, Lawrence, Charles R., Werner, Michael W.
Spitzer mid-infrared images of the dusty warped disk in the galaxy Centaurus A show a parallelogram-shaped structure. We successfully model the observed mid-infrared morphology by integrating the...
Discovery of a 500 pc shell in the nucleus of Centaurus A (2006)
Quillen, Alice C., Bland-Hawthorn, Joss, Brookes, Mairi H., Werner, Michael W., Smith, J. D., Stern, Daniel, ...
Spitzer Space Telescope mid-infrared images of the radio galaxy Centaurus A reveal a shell-like, bipolar, structure 500 pc to the north and south of the nucleus. This shell is seen in 5.8, 8.0 and 24...
The radial velocity experiment (RAVE) : first data release (2006)
Steinmetz, Matthias, Zwitter, Tomaz, Siebert, Arnaud, Watson, Fred G., Freeman, Kenneth C., Munari, Ulisse, ...
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity,...
The radial velocity experiment (RAVE) : first data release (2006)
Steinmetz, Matthias, Zwitter, Tomaz, Siebert, Arnaud, Watson, Fred G., Freeman, Kenneth C., Munari, Ulisse, ...
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity,...
The radial velocity experiment (RAVE) : first data release (2006)
Steinmetz, Matthias, Zwitter, Tomaz, Siebert, Arnaud, Watson, Fred G., Freeman, Kenneth C., Munari, Ulisse, ...
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity,...
The radial velocity experiment (RAVE) : first data release (2006)
Steinmetz, Matthias, Zwitter, Tomaz, Siebert, Arnaud, Watson, Fred G., Freeman, Kenneth C., Munari, Ulisse, ...
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity,...
The radial velocity experiment (RAVE) : first data release (2006)
Steinmetz, Matthias, Zwitter, Tomaz, Siebert, Arnaud, Watson, Fred G., Freeman, Kenneth C., Munari, Ulisse, ...
We present the first data release of the Radial Velocity Experiment (RAVE), an ambitious spectroscopic survey to measure radial velocities and stellar atmosphere parameters (temperature, metallicity,...
The Warped Nuclear Disk of Radio Galaxy 3C 449 (2005)
Tremblay, Grant R., Quillen, Alice C., Floyd, David J. E., Noel-Storr, Jacob, Baum, Stefi A., Axon, David, ...
Among radio galaxies containing nuclear dust disks, the bipolar jet axis is generally observed to be perpendicular to the disk major axis. The FR I radio source 3C 449 is an outlier to this...
Reducing the Probability of Capture into Resonance (2005)
A migrating planet can capture planetesimals into mean motion resonances. However, resonant trapping can be prevented when the drift or migration rate is sufficiently high. Using a simple Hamiltonian...
Peterson, Bradley M., Bentz, Misty C., Desroches, Louis-Benoit, Filippenko, Alexei V., Ho, Luis C., Kaspi, Shai, ...
A reverberation-mapping program on NGC 4395, the least-luminous known Seyfert 1 galaxy, undertaken with the Space Telescope Imaging Spectrograph on the Hubble Space Telescope, yields a measurement of...
The Warped Circumstellar Disk of HD100546 (2005)
We propose that the two armed spiral features seen in visible Hubble Space Telescope images of scattered light in HD100546's circumstellar disk are caused by the illumination of a warped outer disk....
The decay of interplanetary coronal mass ejections and forbush decrease recovery times (2004)
Penna, Robert F., Quillen, Alice C.
We investigate the relation between Forbush cosmic ray decrease recovery time and coronal mass ejection transit time between the Sun and Earth. We identify 17 Forbush decreases from ground based...
On the Planet and the Disk of CoKuTau/4 (2004)
Quillen, Alice C., Blackman, Eric G., Frank, Adam, Varniere, Peggy
Spitzer observations of the young star CoKuTau/4 reveal a disk with a 10 AU hole that is most likely caused by a newly formed planet. Assuming that the planet opened a gap in the viscous disk, we...
The impact of a close stellar encounter on the Edgeworth-Kuiper Belt (2004)
Quillen, Alice C., Trilling, David E., Blackman, Eric G.
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 Burkert, however we...
Driving spiral arms in the circumstellar disks of HD 100546 and HD 141569A (2003)
Quillen, Alice C., Varniere, Peggy, Minchev, Ivan, Frank, Adam
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 circumstellar disks....
Spectral Energy Distributions of Seyfert Nuclei (2003)
Alonso-Herrero, Almudena, Quillen, Alice C., Rieke, George H., Ivanov, Valentin D., Efstathiou, Andreas
We present nuclear spectral energy distributions (SEDs) in the range 0.4-16micron for an expanded CfA sample of Seyfert galaxies. The spectral indices from 1-16micron range from alpha_IR 0.9 to 3.8....
Sgr A* Companion S0-2: A Probe of Very High-Mass Star Formation (2003)
Gould, Andrew, Quillen, Alice C.
The star S0-2, which is orbiting Sgr A* with a 15-yr period, almost certainly did not form in situ. We propose that it was injected into this close orbit by the tidal disruption of a massive-star...
Near-IR and Optical Morphology of Spiral Galaxies (2002)
Eskridge, Paul B., Frogel, Jay A., Pogge, Richard W., Quillen, Alice C., Berlind, Andreas A., Davies, Roger L., ...
We announce the initial release of data from the Ohio State University Bright Spiral Galaxy Survey, a BVRJHK imaging survey of a well-defined sample of 205 bright, nearby spiral galaxies. We present...
The saturation of disk heating in the solar neighborhood and evidence for a merger 9 Gyrs ago (2000)
Quillen, Alice C., Garnett, Donald R.
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 evolution calculations. The...
The Frequency of Barred Spiral Galaxies in the Near-IR (1999)
Eskridge, Paul B., Frogel, Jay A., Pogge, Richard W., Quillen, Alice C., Davies, Roger L., DePoy, D. L., ...
We have determined the fraction of barred galaxies in the H-band for a statistically well-defined sample of 186 spirals drawn from the Ohio State University Bright Spiral Galaxy survey. We find 56%...
An infrared survey of brightest cluster galaxies: Paper I
Alice C. Quillen, Nicholas Zufelt, Jaehong Park, Christopher P. O’dea, Stefi A. Baum, George Privon, ...
We report on an imaging survey with the Spitzer Space Telescope of 62 brightest cluster galaxies with optical line emission. These galaxies are located in the cores of X-ray luminous clusters...