white dwarf
White dwarf stars
... White dwarf stars were first discovered only fifty years ago, when the science of astrophysics was in its infancy. The original discovery appears to have been made by Russell (l). He had just found from his ...
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Physical properties of eclipsing white dwarf binaries
... In Chapter 7 I revisited V 455 And, identified as HS 2331+3905 in the HQS, and conducted the first comprehensive analysis of its power spectra in order to determine whether the significant ex- cess of power detected in ...
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The fate of exomoons in white dwarf planetary systems
... The moons themselves are highly unlikely to significantly af- fect the orbits of one another because of their small masses, unless they have already reached the white dwarf disruption radius (and have ...
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A magnetic white dwarf in a detached eclipsing binary
... eclipsing white dwarf plus M dwarf binary which shows a large infrared excess which has been interpreted in terms of a circumbinary dust ...the white dwarf caused by accretion of wind ...
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The nature of the close magnetic white dwarf + probable brown dwarf binary SDSS J121209.31+013627.7
... magnetic white dwarf’s optical spectrum will better determine its temperature, sur- face gravity, mass, radius, field strength and configuration and cool- ing ...brown dwarf would also allow investigation ...
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A magnetic white dwarf in a detached eclipsing binary
... M dwarf we then attempted to remove this component from the spectra to reveal the underlying white dwarf’s ...M dwarf, hence we averaged these spectra to make the M dwarf ...M dwarf ...
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A circumbinary debris disk in a polluted white dwarf system
... dusty white dwarf is similar to the well-studied larger population, then the parent body of the debris was likely formed within the snow line of the progenitor system, and thus implying that rocky planet ...
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The Gaia 20 pc white dwarf sample
... eleven white dwarfs known (or thought to be) within 20 pc are missing and are summarised in Table ...the white dwarf component (40 Eri B) is missing although the A and C components both have full ...
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DE Canum Venaticorum : a bright, eclipsing red dwarf–white dwarf binary
... During one of the ULTRACAM observing runs (25 May 2003), a flare was observed in all three bands starting at about 23:23 UT. This part of the light curve is shown in Fig. 7. The observed part of the flare lasted ∼39 min. ...
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RX J2130.6+4710 - an eclipsing white dwarf-M-dwarf binary star
... White dwarf stars are the remnants of stars less massive than about 5–8 M ⊙ which have been through the red giant phase of their evolution. The separation of a WD+Me binary with a period of 12 h is 2–3 R ⊙ ...
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Discovery of the first resolved triple white dwarf
... triple white dwarf J1953 − 1019 as part of a search for double white dwarfs in common proper motion ...a white dwarf greater than ...photometric white dwarf candidates, ...
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A circumbinary debris disk in a polluted white dwarf system
... in white dwarf stars offers a unique and powerful window into the assembly and chemistry of terrestrial ...polluted white dwarfs with detailed analyses indicate the sources are rocky planetesimals ...
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Embedding planetesimals into white dwarf discs from large distances
... Sometimes this interaction leads to direct capture, represent- ing the scenario we study here. Enabling this work is the analytical formalism developed by Grishin, Perets & Avni (2019), which ul- timately led to ...
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Cool white dwarf companions to four millisecond pulsars
... the white dwarf (the He/H abundance ratio) the cooling tracks can level out at g − r values ranging from ...cover white dwarf masses between ...
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Detection of the white dwarf and the secondary star in the new SU UMa dwarf nova HS 2219+1824
... period dwarf novae, ...the white dwarf has been confirmed by the unambiguous detection of the white dwarf at ultraviolet wavelengths (Sion et ...
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The shortest period detached white dwarf + main-sequence binary
... the white dwarf (Rebassa-Mansergas et ...the white dwarf’s mass and radius determined in- dependently of any model, so too are the mass and radius of its ...M dwarf eclipsing binary systems ...
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An ultramassive 1 28 M⊙ white dwarf in NGC 2099
... massive white dwarfs in the Galactic fi eld, but even more so in stellar clusters, has led to arguments that most massive white dwarfs are formed through mass transfer or white dwarf mergers, ...
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Detailed studies of white dwarf binaries and their orbital periods
... double white dwarf, contrary to my assumption throughout the analysis presented in this ...massive white dwarf are station- ary (Marsh et ...massive white dwarf could be aligned ...
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An accurate mass and radius measurement for an ultracool white dwarf
... the white dwarf’s chromosphere as a result of accretion of material from the wind of the M ...close white dwarf plus main se- quence binaries and reliably track the motion of the white ...
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The mass of the white dwarf in the old nova BT Mon
... invoked the existence of an accretion disc wind which dominates the Balmer emission and remains unobscured during primary eclipse. Williams (1989) has suggested that the accretion disc is disrupted by a strong magnetic ...
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