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A radio-pulsing white dwarf binary star
White dwarfs are compact stars, similar in size to Earth but approximately 200,000 times more massive. Isolated white dwarfs emit most of their power from ultraviolet to near-infrared wavelengths,Expand
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Post common envelope binaries from SDSS. XII : the orbital period distribution
Context. The complexity of the common-envelope phase and of magnetic stellar wind braking currently limits our understanding of close binary evolution. Because of their intrinsically simpleExpand
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Three Hypervelocity White Dwarfs in Gaia DR2: Evidence for Dynamically Driven Double-Degenerate Double-Detonation Type Ia Supernovae
Double detonations in double white dwarf (WD) binaries undergoing unstable mass transfer have emerged in recent years as one of the most promising Type Ia supernova (SN Ia) progenitor scenarios. OneExpand
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A White Dwarf with Transiting Circumstellar Material Far Outside the Roche Limit
We report the discovery of a white dwarf exhibiting deep, irregularly shaped transits, indicative of circumstellar planetary debris. Using Zwicky Transient Facility DR2 photometry ofExpand
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Nearby M, L, and T Dwarfs Discovered by the Wide-field Infrared Survey Explorer (WISE)
In our effort to complete the census of low-mass stars and brown dwarfs in the immediate solar neighborhood, we present spectra, photometry, proper motions, and distance estimates for 42 low-massExpand
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Post common envelope binaries from SDSS
Context. Post-common-envelope binaries (PCEBs) consisting of a white dwarf (WD) and a main-sequence secondary star are ideal systems to constrain models of common-envelope (CE) evolution. Until veryExpand
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The Composition Of A Disrupted Extrasolar Planetesimal At SDSS J0845+2257 (Ton 345)
We present a detailed study of the metal-polluted DB white dwarf SDSS J0845+2257 (Ton 345). Using high-resolution HST/COS and VLT spectroscopy, we have detected hydrogen and eleven metals in theExpand
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A planetesimal orbiting within the debris disc around a white dwarf star
A low-mass planet around a white dwarf Numerous exoplanets have been detected around Sun-like stars. These stars end their lives as white dwarfs, which should inherit any surviving planetary systems.Expand
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Post-common envelope binaries from SDSS - XVI. Long orbital period systems and the energy budget of CE evolution
Virtually all close compact binary stars are formed through common-envelope (CE) evolution. It is generally accepted that during this crucial evolutionary phase a fraction of the orbital energy isExpand
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Post common envelope binaries from SDSS. VIII, Evidence for disrupted magnetic braking
Context. The standard prescription of angular momentum loss in compact binaries assumes magnetic braking to be very efficient as long as the secondary star has a radiative core, but to be negligibleExpand
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