Search Results - "Bours, M C P"
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Hunting for eclipses: high-speed observations of cataclysmic variables
Published in Monthly notices of the Royal Astronomical Society (11-03-2017)“…We present new time-resolved photometry of 74 cataclysmic variables (CVs), 47 of which are eclipsing. Thirteen of these eclipsing systems are newly discovered…”
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Using large spectroscopic surveys to test the double degenerate model for Type Ia supernovae
Published in Monthly notices of the Royal Astronomical Society (01-07-2017)“…Abstract An observational constraint on the contribution of double degenerates to Type Ia supernovae requires multiple radial velocity measurements of ideally…”
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The substellar companion in the eclipsing white dwarf binary SDSS J141126.20+200911.1
Published in Monthly notices of the Royal Astronomical Society (01-12-2014)“…We present high time resolution SDSS-g' and SDSS-z' light curves of the primary eclipse in SDSS J141126.20+200911.1, together with time-resolved X-Shooter…”
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Using Gaussian processes to model light curves in the presence of flickering: the eclipsing cataclysmic variable ASASSN-14ag
Published in Monthly notices of the Royal Astronomical Society (11-01-2017)“…The majority of cataclysmic variable (CV) stars contain a stochastic noise component in their light curves, commonly referred to as flickering. This can…”
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Testing the white dwarf mass–radius relationship with eclipsing binaries
Published in Monthly notices of the Royal Astronomical Society (01-10-2017)“…We present high-precision, model-independent, mass and radius measurements for 16 white dwarfs in detached eclipsing binaries and combine these with previously…”
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Precise parameters for both white dwarfs in the eclipsing binary CSS 41177
Published in Monthly notices of the Royal Astronomical Society (11-03-2014)“…We present ULTRACAM photometry and X-Shooter spectroscopy of the eclipsing double white dwarf binary CSS 41177, the only such system that is also a…”
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Once in a blue moon: detection of ‘bluing' during debris transits in the white dwarf WD 1145+017
Published in Monthly notices of the Royal Astronomical Society (11-08-2017)“…Abstract The first transiting planetesimal orbiting a white dwarf was recently detected in K2 data of WD 1145+017 and has been followed up intensively. The…”
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ULTRASPEC: a high-speed imaging photometer on the 2.4-m Thai National Telescope
Published in Monthly notices of the Royal Astronomical Society (11-11-2014)“…ULTRASPEC is a high-speed imaging photometer mounted permanently at one of the Nasmyth focii of the 2.4-m Thai National Telescope (TNT) on Doi Inthanon,…”
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A magnetic white dwarf in a detached eclipsing binary
Published in Monthly notices of the Royal Astronomical Society (21-11-2013)“…SDSS J030308.35+005444.1 is a close, detached, eclipsing white dwarf plus M dwarf binary which shows a large infrared excess which has been interpreted in…”
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HST+COS spectra of the double white dwarf CSS 41177 place the secondary inside the pulsational instability strip
Published in Monthly notices of the Royal Astronomical Society (21-03-2015)“…We present Hubble Space Telescope + Cosmic Origins Spectrograph (HST+COS) data of the eclipsing double white dwarf binary CSS 41177. Due to the temperature…”
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Long-term eclipse timing of white dwarf binaries: an observational hint of a magnetic mechanism at work
Published in Monthly notices of the Royal Astronomical Society (21-08-2016)“…We present a long-term programme for timing the eclipses of white dwarfs in close binaries to measure apparent and/or real variations in their orbital periods…”
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The planets around NN Serpentis: still there
Published in Monthly notices of the Royal Astronomical Society (2014)“…We present 25 new eclipse times of the white dwarf binary NN Ser taken with the high-speed camera ULTRACAM on the William Herschel Telescope and New Technology…”
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A large, long-lived structure near the trojan L5 point in the post common-envelope binary SDSS J1021+1744
Published in Monthly notices of the Royal Astronomical Society (01-03-2016)“…SDSS J1021+1744 is a detached, eclipsing white dwarf/M dwarf binary discovered in the Sloan Digital Sky Survey (SDSS). Outside the primary eclipse, the light…”
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14 new eclipsing white dwarf plus main-sequence binaries from the SDSS and Catalina surveys
Published in Monthly notices of the Royal Astronomical Society (11-05-2015)“…We report on the search for new eclipsing white dwarf plus main-sequence (WDMS) binaries in the light curves of the Catalina surveys. We use a colour-selected…”
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Heavy metals in a light white dwarf: abundances of the metal-rich, extremely low-mass GALEX J1717+6757
Published in Monthly notices of the Royal Astronomical Society (21-10-2014)“…Using the Hubble Space Telescope, we detail the first abundance analysis enabled by far-ultraviolet spectroscopy of a low-mass (≃0.19 M⊙) white dwarf (WD),…”
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Testing the planetary models of HU Aquarii
Published in Monthly notices of the Royal Astronomical Society (01-12-2014)“…We present new eclipse observations of the polar (i.e. semidetached magnetic white dwarf + M-dwarf binary) HU Aqr, and mid-egress times for each eclipse, which…”
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A double white dwarf with a paradoxical origin?
Published in Monthly notices of the Royal Astronomical Society (11-07-2015)“…We present Hubble Space Telescope UV spectra of the 4.6-h-period double white dwarf SDSS J125733.63+542850.5. Combined with Sloan Digital Sky Survey optical…”
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PHL 1445: an eclipsing cataclysmic variable with a substellar donor near the period minimum
Published in Monthly notices of the Royal Astronomical Society (21-07-2015)“…We present high-speed, three-colour photometry of the eclipsing dwarf nova PHL 1445, which, with an orbital period of 76.3 min, lies just below the period…”
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A parameter study of the eclipsing CV in the Kepler field, KIS J192748.53+444724.5
Published in Monthly notices of the Royal Astronomical Society (01-09-2014)“…We present high-speed, three-colour photometry of the eclipsing dwarf nova KIS J192748.53+444724.5 (KISJ1927) which is located in the Kepler field. Our data…”
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SDSS J105754.25+275947.5: a period-bounce eclipsing cataclysmic variable with the lowest-mass donor yet measured
Published in Monthly notices of the Royal Astronomical Society (01-06-2017)“…Abstract We present high-speed, multicolour photometry of the faint, eclipsing cataclysmic variable (CV) SDSS J105754.25+275947.5. The light from this system…”
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