magnetic white dwarfs
Irradiated atmospheres of accreting magnetic white dwarfs with an application to the polar AM Herculis
... accreting magnetic white dwarfs irradiated by intense fluxes at ultraviolet to infrared ...on white dwarfs in polars and (ii) that much of the reprocessed light appears in the far ...
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On the evolution of magnetic white dwarfs
... and magnetic fi eld strength ...that magnetic fi elds are remnants of the white dwarf ...two white dwarfs or a white dwarf and the core of a giant star ( García- Berro et ...of ...
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Zeeman tomography of magnetic white dwarfs III, The 70–80 Megagauss magnetic field of PG 1015+014
... 5448 white dwarfs (WDs) listed in the Web Version 1 of the Villanova White Dwarf Catalog magnetic fields between 2 kG–1000 MG have been detected, corresponding to a fraction of 3% (McCook ...
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Zeeman tomography of magnetic white dwarfs II, The quadrupole dominated magnetic field of HE 1045 0908
... of magnetic white dwarfs (MWDs) of at least 10% for objects with surface fields exceeding 2 MG, and probably even more if low-field objects are included (Liebert et ...old white dwarfs, ...
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Zeeman tomography of magnetic white dwarfs IV, The complex field structure of the polars EF Eridani, BL Hydri and CP Tucanae
... of white dwarfs in polars based on phase- resolved VLT ...the white dwarfs in CVs have a typical age in excess of 1 Gyr (Kolb & Baraffe 1999), sufficient to expect substantial decay of the ...
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Accretion on to Magnetic White Dwarfs
... the white dwarf surface such as the anomalous soft-X-ray excess and its time variability provide strong support for the hypothesis that under certain circumstances the field channelled funnel flow is ...the ...
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Fundamental parameter accuracy of DA and DB white dwarfs in Gaia Data Release 2
... of magnetic white dwarfs, DAO stars, cool He-rich atmo- spheres with weak hydrogen lines, and identifiable bina- ries of the types DA+DC, DA+DB and ...DA white dwarfs can not be ...
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Can magnetic fields suppress convection in the atmosphere of cool white dwarfs? A case study on WD2105−820
... a white dwarf and an accurate treatment of the combined Stark and Zee- man broadening becomes necessary to obtain stellar pa- rameters from optical spectroscopy, even at medium reso- lution (∼ 3˚ ...high-field ...
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The Genesis of Magnetic Fields in White Dwarfs
... the magnetic white dwarfs with detached, non-degenerate companions?” This question is awaiting an answer and thus the pro- genitors of the MCVs still need to be ...high magnetic fields in all ...
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A new magnetic white dwarf: PG 2329+267
... the white dwarf PG 2329+267 is magnetic, and, assuming a centred dipole structure, has a dipole magnetic field strength of approximately ...isolated white dwarfs with a detectable ...
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Cold giant planets evaporated by hot white dwarfs
... cool white dwarfs, where the photospheric abundances re fl ect the rocky nature of the accreted material ( Xu et ...hot white dwarfs show large abundances of volatiles, in particular C, S, and ...
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Tidal circularization of gaseous planets orbiting white dwarfs
... of white dwarf planets and metal-polluted white dwarfs can constrain the dynamics of tidal migration and ...of white dwarfs with plane- tary companions will provide an upper limit to ...
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Interpretation and diversity of exoplanetary material orbiting white dwarfs
... (Bochkarev & Rafikov 2011; Kenyon & Bromley 2017). Sinking time-scales for metals range from a few days in warm, H-dominated atmospheres to a few million years in cool, He-dominated atmo- spheres (Dupuis et al. ...
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Two white dwarfs with oxygen rich atmospheres
... ONe white dwarfs and those undergoing electron-capture SN II show that the mass of the CO layer decreases with increasing initial stellar mass (16, 27, ...29) white dwarfs, some of which have ...
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The Dynamics of White Dwarfs, Black Holes and Stellar Cusps
... ultracool white dwarfs are similar to LHS 3250 and conservatively that they can be detected the single visit 5-σ depth then they would be detectable to ∼ 210 pc, the limiting band being the ...ultracool ...
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The gaseous component to planetary debris discs at white dwarfs
... all white dwarf plus brown dwarf binaries (see also Maxted et ...which white dwarfs accrete from low- mass main-sequence stars (Manser and Gänsicke, ...containing white dwarfs accreting ...
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The Gaia DR1 mass–radius relation for white dwarfs
... Another method to test the MRR is to rely on astrometric bi- naries with known distances and precise dynamical orbital mass measurements (Shipman et al. 1997; Barstow et al. 2005; Bond et al. 2015). There are only a few ...
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Orbital relaxation and excitation of planets tidally interacting with white dwarfs
... a white dwarf and planet include the prospect of the for- mation of second- or third-generation planets, which may even arise from second- or third-generation debris discs (Perets 2011; Schleicher & Dreizler ...
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White Dwarfs are Small, Fast-Spinning Hot Stars
... the white dwarfs within realistic values as small, fast- rotating stars with the density, which is similar to other, both medium and large, hot ...(white dwarfs, pulsars, neutron stars, ...
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Pure helium 3D model atmospheres of white dwarfs
... DB white dwarfs, it would be computationally expensive to create a full grid of 3D model ...(ELM) white dwarfs, it has been shown that ...
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