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PSR J1738+0333: The First Millisecond Pulsar + Pulsating White Dwarf Binary
Mukremin Kilic, J. J. Hermes, A. Gianninas +1
We report the discovery of the first millisecond pulsar with a pulsating white dwarf companion. Following the recent discoveries of pulsations in extremely low-mass (ELM, <0.3 Msol…
Precise Atmospheric Parameters for the Shortest Period Binary White Dwarfs: Gravitational Waves, Metals, and Pulsations
A. Gianninas, P. Dufour, Mukremin Kilic +3
We present a detailed spectroscopic analysis of 61 low mass white dwarfs and provide precise atmospheric parameters, masses, and updated binary system parameters based on our new m…
The Identification of RR Lyrae and Delta Scuti Stars from Variable GALEX Ultraviolet Sources
T. D. Kinman, Warren R. Brown
We identify the RR Lyrae and delta Scuti (DSCT) stars in three catalogs of GALEX variable sources. The NUV amplitude of RR Lyrae stars is about twice that in V-band, so we find a l…
Radius constraints from high-speed photometry of 20 low-mass white dwarf binaries
J. J. Hermes, Warren R. Brown, Mukremin Kilic +10
We carry out high-speed photometry on 20 of the shortest-period, detached white dwarf binaries known and discover systems with eclipses, ellipsoidal variations (due to tidal deform…
A New Gravitational Wave Verification Source
Mukremin Kilic, Warren R. Brown, A. Gianninas +3
We report the discovery of a detached 20 min orbital period binary white dwarf. WD0931+444 (SDSS J093506.93+441106.9) was previously classified as a WD + M dwarf system based on it…
Predicted Space Motions for Hypervelocity and Runaway Stars: Proper Motions and Radial Velocities for the GAIA Era
Scott J. Kenyon, Benjamin C. Bromley, Warren R. Brown +1
We predict the distinctive three dimensional space motions of hypervelocity stars (HVSs) and runaway stars moving in a realistic Galactic potential. For nearby stars with distances…