15 citations · 38 across the 10 of their papers we have counts for
10 papers
Magnetically guided accretion and extremely slow rotation in a metal-enriched white dwarf
S. Bagnulo, M. A. Stroet, C. P. Folsom +3
White dwarfs that show atmospheric metal enrichment offer a direct window into the bulk composition of exoplanetary material and provide some of the most direct constraints on the…
I Can Do It With A Broken Planetesimal: Characterising the planetary debris in heavily polluted cool white dwarfs
Anna-Maria Cutolo, Boris T. Gänsicke, Andrew Swan +7
We present the analysis of four cool and strongly metal-polluted H-atmosphere white dwarfs observed with X-shooter. We compared their atmospheric parameters obtained from spectrosc…
A systematic survey for hypervelocity runaways from thermonuclear supernovae
Kareem El-Badry, Klaus Werner, Ken J. Shen +16
The explosion of a white dwarf (WD) in a close binary can launch a surviving runaway star at velocities of . Such runaways provide a direct probe of…
Discovery of a runaway star likely ejected by a Type Iax Supernova
A. Bhat, M. Hollands, M. Dorsch +5
Over the past decade, runaway stars have been identified, believed to originate either as surviving donors of Type Ia supernovae or as partially deflagrated accretors producing Typ…
A hot white dwarf merger remnant revealed by an ultraviolet detection of carbon
Snehalata Sahu, Antoine Bédard, Boris T. Gänsicke +7
Atmospheric carbon has been detected in the optical spectra of six hydrogen-rich ultra-massive white dwarfs, revealing large carbon abundances (log C/H > 0.5) attributable to th…
Metal accretion scars may be common on magnetic, polluted white dwarfs
S. Bagnulo, J. D. Landstreet, J. Farihi +3
More than 30% of white dwarfs exhibit atmospheric metals, which are understood to be from recent or ongoing accretion of circumstellar debris. In cool white dwarfs, surface motions…
White Dwarf Pollution: One Star or Two?
Hiba Tu Noor, Jay Farihi, Mark Hollands +1
The accretion of tidally disrupted planetary bodies is the current consensus model for the presence of photospheric metals commonly detected in white dwarfs. While most dynamical s…
J0526+5934: a peculiar ultra-short period double white dwarf
Alberto Rebassa-Mansergas, Mark Hollands, Steven G. Parsons +6
Ultra-short period compact binaries are important sources of gravitational waves, which include e.g. the progenitors of type Ia supernovae or the progenitors of merger episodes tha…
A transmission spectrum of the planet candidate WD 1856+534 b and a lower limit to its mass
R. Alonso, P. Rodríguez-Gil, P. Izquierdo +7
The cool white dwarf WD 1856+534 was found to be transited by a Jupiter-sized object with a mass at or below 14 M. We used the GTC telescope to obtain and analyse phot…
Multi-wavelength observations of the EUV variable metal-rich white dwarf GD 394
David J. Wilson, Boris T. Gaensicke, Detlev Koester +13
We present new Hubble Space Telescope (HST) ultraviolet and ground-based optical observations of the hot, metal-rich white dwarf GD 394. Extreme-ultraviolet (EUV) observations in 1…