454 citations · 947 across the 12 of their papers we have counts for
12 papers
Constraints on Remnant Planetary Systems as a Function of Main-Sequence Mass with HST/COS
Lou Baya Ould Rouis, J. J. Hermes, Boris T. Gänsicke +8
As the descendants of stars with masses less than 8 M on the main sequence, white dwarfs provide a unique way to constrain planetary occurrence around intermediate-mass s…
Measuring White Dwarf Variability from Sparsely Sampled Gaia DR3 Multi-Epoch Photometry
Maya Steen, J. J. Hermes, Joseph A. Guidry +5
White dwarf stars are ubiquitous in the Galaxy, and are essential to understanding stellar evolution. While most white dwarfs are photometrically stable and reliable flux standards…
A Test of Spectroscopic Age Estimates of White Dwarfs using Wide WD+WD Binaries
Tyler M. Heintz, J. J. Hermes, P. -E. Tremblay +4
White dwarf stars have been used for decades as precise and accurate age indicators. This work presents a test of the reliability of white dwarf total ages when spectroscopic obser…
Rotation at the Fully Convective Boundary: Insights from Wide WD + MS Binary Systems
Federica Chiti, Jennifer L. van Saders, Tyler M. Heintz +5
Gyrochronology, a valuable tool for determining ages of low-mass stars where other techniques fail, relies on accurate calibration. We present a sample of 185 wide ( au) wh…
Testing White Dwarf Age Estimates using Wide Double White Dwarf Binaries from Gaia EDR3
Tyler M. Heintz, J. J. Hermes, Kareem El-Badry +4
White dwarf (WD) stars evolve simply and predictably, making them reliable age indicators. However, self-consistent validation of the methods for determining WD total ages has yet…
Discovery of 74 new bright ZZ Ceti stars in the first three years of TESS
A. D. Romero, S. O. Kepler, J. J. Hermes +17
We report the discovery of 74 new pulsating DA white dwarf stars, or ZZ Cetis, from the data obtained by the Transiting Exoplanet Survey Satellite (TESS) mission, from Sectors 1 to…
Recurring Planetary Debris Transits and Circumstellar Gas around White Dwarf ZTF J03281219
Zachary P. Vanderbosch, Saul Rappaport, Joseph A. Guidry +14
We present follow-up photometry and spectroscopy of ZTF J03281219 strengthening its status as a white dwarf exhibiting transiting planetary debris. Using TESS and Zwicky Transie…
A million binaries from Gaia eDR3: sample selection and validation of Gaia parallax uncertainties
Kareem El-Badry, Hans-Walter Rix, Tyler M. Heintz
We construct from Gaia eDR3 an extensive catalog of spatially resolved binary stars within 1 kpc of the Sun, with projected separations ranging from a few au to 1 pc. We…
I Spy Transits and Pulsations: Empirical Variability in White Dwarfs Using Gaia and the Zwicky Transient Facility
Joseph A. Guidry, Zachary P. Vanderbosch, J. J. Hermes +13
We present a novel method to detect variable astrophysical objects and transient phenomena using anomalous excess scatter in repeated measurements from public catalogs of Gaia DR2…
VBBinaryLensing: a public package for microlensing light curve computation
V. Bozza, E. Bachelet, F. Bartolić +3
The computation of microlensing light curves represents a bottleneck for the modeling of planetary events, making broad searches in the vast parameter space of microlensing extreme…
KELT-16b: A highly irradiated, ultra-short period hot Jupiter nearing tidal disruption
Thomas E. Oberst, Joseph E. Rodriguez, Knicole D. Colón +47
We announce the discovery of KELT-16b, a highly irradiated, ultra-short period hot Jupiter transiting the relatively bright () star TYC 2688-1839-1. A global analysis of…
KELT-17b: A hot-Jupiter transiting an A-star in a misaligned orbit detected with Doppler tomography
George Zhou, Joseph E. Rodriguez, Karen A. Collins +45
We present the discovery of a hot-Jupiter transiting the V=9.23 mag main-sequence A-star KELT-17 (BD+14 1881). KELT-17b is a 1.31 -0.29/+0.28 Mj, 1.525 -0.060/+0.065 Rj hot-Jupiter…