79 citations · 480 across the 17 of their papers we have counts for
17 papers
The Rapid Rotation of the Strongly Magnetic Ultramassive White Dwarf EGGR 156
K. A. Williams, J. J. Hermes, Z. P. Vanderbosch
The distribution of white dwarf rotation periods provides a means for constraining angular momentum evolution during the late stages of stellar evolution, as well as insight into t…
Kepler and TESS Observations of PG 1159-035
Gabriela Oliveira da Rosa, S. O. Kepler, Alejandro H. Córsico +11
PG 1159-035 is the prototype of the DOV hot pre-white dwarf pulsators. It was observed during the Kepler satellite K2 mission for 69 days in 59 s cadence mode and by the TESS satel…
New Variable Hot Subdwarf Stars Identified from Anomalous Gaia Flux Errors, Observed by TESS, and Classified via Fourier Diagnostics
Brad N. Barlow, Kyle A. Corcoran, Isabelle M. Parker +7
Hot subdwarf stars are mostly stripped red giants that can exhibit photometric variations due to stellar pulsations, eclipses, the reflection effect, ellipsoidal modulation, and Do…
Masses of White Dwarf Binary Companions to Type Ia Supernovae Measured from Runaway Velocities
Evan B. Bauer, Vedant Chandra, Ken J. Shen +1
The recently proposed "dynamically driven double-degenerate double-detonation" (D6) scenario posits that Type Ia supernovae (SNe) may occur during dynamically unstable mass transfe…
A deep test of radial differential rotation in a helium-atmosphere white dwarf: I. Discovery of pulsations in PG 0112+104
J. J. Hermes, Steven D. Kawaler, A. Bischoff-Kim +3
We present the detection of non-radial oscillations in a hot, helium-atmosphere white dwarf using 78.7 d of nearly uninterrupted photometry from the Kepler space telescope. With an…
Pruning The ELM Survey: Characterizing Candidate Low-Mass White Dwarfs Through Photometric Variability
Keaton J. Bell, A. Gianninas, J. J. Hermes +7
We assess the photometric variability of nine stars with spectroscopic Teff and log(g) values from the ELM Survey that locate them near the empirical extremely low-mass (ELM) white…