210 citations · 6.2k across the 148 of their papers we have counts for
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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…
A close-in giant planet escapes engulfment by its star
Marc Hon, Daniel Huber, Nicholas Z. Rui +39
When main-sequence stars expand into red giants, they are expected to engulf close-in planets. Until now, the absence of planets with short orbital periods around post-expansion, c…
TESS Asteroseismic Analysis of HD 76920: The Giant Star Hosting An Extremely Eccentric Exoplanet
Chen Jiang, Tao Wu, Adina D. Feinstein +30
The Transiting Exoplanet Survey Satellite (TESS) mission searches for new exoplanets. The observing strategy of TESS results in high-precision photometry of millions of stars acros…
A white dwarf accreting planetary material determined from X-ray observations
Tim Cunningham, Peter J. Wheatley, Pier-Emmanuel Tremblay +4
The atmospheres of a large proportion of white dwarf stars are polluted by heavy elements that are expected to sink out of visible layers on short timescales. This has been interpr…
Significant interstellar object production by close stellar flybys
Susanne Pfalzner, Luis Aizpuru Vargas, Asmita Bhandare +1
Within just two years, two interstellar objects (ISOs) - Oumuamuas and Borisov - have been discovered. Large quantities of planetesimals form as a by-product of planet formation. T…
Horizontal spreading of planetary debris accreted by white dwarfs
Tim Cunningham, Pier-Emmanuel Tremblay, Evan B. Bauer +8
White dwarfs with metal-polluted atmospheres have been studied widely in the context of the accretion of rocky debris from evolved planetary systems. One open question is the geome…
White dwarfs with planetary remnants in the era of Gaia I: six emission line systems
N. P. Gentile Fusillo, C. J. Manser, Boris T. Gänsicke +17
White dwarfs with emission lines from gaseous debris discs are among the rarest examples of planetary remnant hosts, but at the same time they are key objects for studying the fina…
TESS Asteroseismic Analysis of the Known Exoplanet Host Star HD 222076
Chen Jiang, Timothy R. Bedding, Keivan G. Stassun +24
The Transiting Exoplanet Survey Satellite (TESS) is an all-sky survey mission aiming to search for exoplanets that transit bright stars. The high-quality photometric data of TESS a…
TESS Asteroseismology of the known red-giant host stars HD 212771 and HD 203949
Tiago L. Campante, Enrico Corsaro, Mikkel N. Lund +45
The Transiting Exoplanet Survey Satellite (TESS) is performing a near all-sky survey for planets that transit bright stars. In addition, its excellent photometric precision enables…
Chaotic rotation and evolution of asteroids and small planets in high-eccentricity orbits around white dwarfs
Valeri V. Makarov, Dimitri Veras
Observed planetary debris in white dwarf atmospheres predominately originate from the destruction of small bodies on highly eccentric () orbits. Despite their importance, th…
Fast spectrophotometry of WD 1145+017
P. Izquierdo, P. Rodríguez-Gil, B. T. Gänsicke +16
WD 1145+017 is currently the only white dwarf known to exhibit periodic transits of planetary debris as well as absorption lines from circumstellar gas. We present the first simult…
Weighing in on the masses of retired A stars with asteroseismology: K2 observations of the exoplanet-host star HD 212771
Tiago L. Campante, Dimitri Veras, Thomas S. H. North +12
Doppler-based planet surveys point to an increasing occurrence rate of giant planets with stellar mass. Such surveys rely on evolved stars for a sample of intermediate-mass stars (…
A simple model to describe intrinsic stellar noise for exoplanet detection around red giants
Thomas S. H. North, William J. Chaplin, Ronald L. Gilliland +7
In spite of the huge advances in exoplanet research provided by the NASA Kepler Mission, there remain only a small number of transit detections around evolved stars. Here we presen…
Doppler-imaging of the planetary debris disc at the white dwarf SDSS J122859.93+104032.9
Christopher J. Manser, Boris T. Gaensicke, Thomas R. Marsh +6
Debris discs which orbit white dwarfs are signatures of remnant planetary systems. We present twelve years of optical spectroscopy of the metal-polluted white dwarf SDSS J1228+1040…
Stellar archaeology with Gaia: the Galactic white dwarf population
Boris Gaensicke, Pier-Emmanuel Tremblay, Martin Barstow +23
Gaia will identify several 1e5 white dwarfs, most of which will be in the solar neighborhood at distances of a few hundred parsecs. Ground-based optical follow-up spectroscopy of t…
Hydrogen delivery onto white dwarfs from remnant exo-Oort cloud comets
Dimitri Veras, Andrew Shannon, Boris T. Gaensicke
The origin of trace hydrogen in white dwarfs (WDs) with He-dominated atmospheres is a long-standing problem, one that cannot satisfactorily be explained by the historically-favoure…
A Third Planet Orbiting HIP 14810
Jason T. Wright, Debra A. Fischer, Eric B. Ford +6
We present new precision radial velocities and a three-planet Keplerian orbit fit for the V = 8.5, G5 V star HIP 14810. We began observing this star at Keck Observatory as part of…