74 citations · 278 across the 8 of their papers we have counts for
8 papers
A Search For Pulsations in the Optical Light Curve of the Nova ASASSN-17hx
Lee J. Rosenthal, Ken J. Shen, Gregg Hallinan +4
We present high-speed optical observations of the nova ASASSN-17hx, taken both immediately after its discovery and close to its first peak in brightness, to search for seconds -- m…
High-Speed Photometry of Gaia14aae: An Eclipsing AM CVn That Challenges Formation Models
M. J. Green, T. R. Marsh, D. T. H. Steeghs +19
AM CVn-type systems are ultra-compact, hydrogen-deficient accreting binaries with degenerate or semi-degenerate donors. The evolutionary history of these systems can be explored by…
CHIMERA: a wide-field, multi-color, high-speed photometer at the prime focus of the Hale telescope
Leon K. Harding, Gregg Hallinan, Jennifer Milburn +7
The Caltech HIgh-speed Multi-color camERA (CHIMERA) is a new instrument that has been developed for use at the prime focus of the Hale 200-inch telescope. Simultaneous optical imag…
VLT observations of the asymmetric Etched Hourglass Nebula, MyCn 18
N. Clyne, M. P. Redman, M. Lloyd +3
Context. The mechanisms that form extreme bipolar planetary nebulae remain unclear. Aims. The physical properties, structure, and dynamics of the bipolar planetary nebula, MyCn 18,…
Kinematics and simulations of the stellar stream in the halo of the Umbrella Galaxy
Caroline Foster, Hanni Lux, Aaron J. Romanowsky +9
We study the dynamics of faint stellar substructures around the Umbrella Galaxy, NGC 4651, which hosts a dramatic system of streams and shells formed through the tidal disruption o…
Periodic Optical Variability of Radio Detected Ultracool Dwarfs
Leon K. Harding, Gregg Hallinan, Richard P. Boyle +5
A fraction of very low mass stars and brown dwarfs are known to be radio active, in some cases producing periodic pulses. Extensive studies of two such objects have also revealed o…
Proper Motions in Globular Clusters using Deconvolution of HST Images
Navtej Singh, Lisa-Marie Browne, Ray Butler
A sub-sampled deconvolution technique for crowded field photometry with the HST WFPC2 instrument was proposed by Butler (2000) and applied to search for optical counterparts to pul…
Parallel Astronomical Data Processing with Python: Recipes for multicore machines
Navtej Singh, Lisa-Marie Browne, Ray Butler
High performance computing has been used in various fields of astrophysical research. But most of it is implemented on massively parallel systems (supercomputers) or graphical proc…