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628 papers · 1 filter
The ACS Survey of Galactic Globular Clusters. VII. Relative Ages
Antonio Marin-Franch, Antonio Aparicio, Giampaolo Piotto +13
The ACS Survey of Galactic Globular Clusters is a Hubble Space Telescope (HST) Treasury program designed to provide a new large, deep and homogeneous photometric database. Based on…
Parallel Algorithm for Solving Kepler's Equation on Graphics Processing Units: Application to Analysis of Doppler Exoplanet Searches
Eric B. Ford
[Abridged] We present the results of a highly parallel Kepler equation solver using the Graphics Processing Unit (GPU) on a commercial nVidia GeForce 280GTX and the "Compute Unifie…
The Frequency of Warm Debris Disks and Transition Disks in a Complete Sample of Intermediate-Mass GLIMPSE Stars: Placing Constraints on Disk Lifetimes
B. Uzpen, H. A. Kobulnicky, K. Kinemuchi
The incidence of dusty debris disks around low- and intermediate-mass stars has been investigated numerous times in order to understand the early stages of planet formation. Most n…
Dynamical Simulations of the Planetary System HD69830
Matthew J. Payne, Eric B. Ford, Mark C. Wyatt +1
HD 69830 exhibits radial velocity variations attributed to three planets as well as infrared emission attributed to a warm debris disk. Previous studies have developed models for t…
Evolution of Dark Matter Phase-Space Density Distributions in Equal-Mass Halo Mergers
Ileana M. Vass, Stelios Kazantzidis, Monica Valluri +1
We use dissipationless N-body simulations to investigate the evolution of the true coarse-grained phase-space density distribution f(x,v) in equal-mass mergers between dark matter…
Mid-Infrared Extinction Mapping of Infrared Dark Clouds: Probing the Initial Conditions for Massive Stars and Star Clusters
Michael J. Butler, Jonathan C. Tan
(Abridged) We use 8 micron Spitzer GLIMPSE images to make extinction maps of 10 IRDCs, selected to be relatively nearby and massive. The extinction mapping technique requires model…