English
Related papers

Related papers: Physical properties of IP Pegasi: an eclipsing dwa…

200 papers

We report the analysis of $JHK_{s}$ light curves of the eclipsing dwarf nova IP Peg in quiescence. The light curves are dominated by the ellipsoidal variation of the mass-donor star, with additional contributions from the accretion disc and…

Astrophysics · Physics 2009-11-13 T. Ribeiro , R. Baptista , E. T. Harlaftis , V. S. Dhillon , R. G. M. Rutten

IP Pegasi is an eclipsing dwarf nova lying above the period gap with an orbital period of 3.8h. It is the first cataclysmic variable to show evidence of spiral arms in its accretion disc. We present new time-resolved echelle spectroscopic…

Astrophysics · Physics 2007-05-23 C. Papadaki , H. M. J. Boffin , D. Steeghs

We present red spectra in the region 7000-8300A of the eclipsing dwarf nova IP Peg, with simultaneous narrow-band photometry centered at 7322A. We show that by placing a second star on the slit we can correct for the telluric absorption…

Astrophysics · Physics 2015-06-24 G. Beekman , M. Somers , T. Naylor , C. Hellier

We present high-speed, three-colour photometry of the eclipsing dwarf nova KIS J192748.53+444724.5 which is located in the Kepler field. Our data reveal sharp features corresponding to the eclipses of the accreting white dwarf followed by…

Solar and Stellar Astrophysics · Physics 2015-06-19 S. P. Littlefair , V. S. Dhillon , B. T Gaensicke , M. C. P. Bours , C. M. Copperwheat , T. R. Marsh

We present time resolved K-band infrared spectra of the dwarf nova (DN) IP Peg in early quiescence. The Brackett-gamma and HeI lines in our data show hitherto unseen behaviour, which we term a mirror eclipse, and interpret as an eclipse of…

Astrophysics · Physics 2009-11-06 S. P. Littlefair , V. S. Dhillon , T. R. Marsh , E. T. Harlaftis

We present time-resolved HST UV spectroscopy and ground-based optical photometry of the dwarf nova IP Peg in a quiescent state. The observations were obtained prior to an eclipse, when the bright spot caused by the impact of the accretion…

We present spectroscopy of the dwarf nova IP Pegasi taken during two consecutive nights, 5 and 6 days after the start of an outburst. Even this late in the outburst, Doppler maps show marked spiral structure in the accretion disc, at least…

Astrophysics · Physics 2009-09-25 L. Morales-Rueda , T. R. Marsh , I. Billington

We present near-infrared, H-band (1.45-1.85 microns) observations of the eclipsing dwarf nova, IP Peg, in quiescence. The light curves are composed of ellipsoidal variations from the late-type secondary star and emission from the accretion…

Astrophysics · Physics 2009-10-31 C. S. Froning , E. L. Robinson , William F. Welsh , Janet H. Wood

We present high time-resolution photometry of the dwarf nova IY UMa using the S-Cam2 super-conducting tunnel junction device attached to the 4.2m William Herschel Telescope on La Palma. Exploiting the well-defined white dwarf and hot spot…

Astrophysics · Physics 2009-11-07 D. Steeghs , M. Perryman , A. Reynolds , J. H. J. de Bruijne , T. Marsh , V. S. Dhillon , A. Peacock

We present an analysis of X-ray and UV data obtained with the XMM-Newton Observatory of the long period dwarf nova RU Peg. RU Peg contains a massive white dwarf, possibly the hottest white dwarf in a dwarf nova, it has a low inclination,…

Solar and Stellar Astrophysics · Physics 2015-05-30 S. Balman , P. Godon , E. M. Sion , J. -U. Ness , E. Schlegel , P. E. Barrett , P. Szkody

We report an eclipse mapping analysis of time-resolved ultraviolet spectroscopy covering three eclipses of the dwarf nova IP Pegasi on the late decline of the 1993 May outburst. The eclipse maps of the first run show evidence of one spiral…

Astrophysics · Physics 2009-11-10 R. K. Saito , R. Baptista , K. Horne

We analyse a unique set of time-resolved echelle spectra of the dwarf nova IP Peg, obtained at ESO's NTT with EMMI. The dataset covers the wavelength range of 4000-7500A and shows Balmer, HeI, HeII and heavier elements in emission. IP Peg…

Astrophysics · Physics 2008-07-03 C. Papadaki , H. M. J. Boffin , D. Steeghs

We present the results of the optical study of the new eclipsing polar Gaia23cer. We analyzed the brightness variability of the polar in high ($\langle r \rangle \approx 16.5\mathrm{\,mag}$) and low ($\langle r \rangle \approx…

(abridged) We report eclipse mapping of time resolved spectroscopy of the dwarf nova IP Pegasi on the late decline from the May 1993 outburst. The spiral arms are still visible some 8 days after the onset of the outburst. Their fractional…

Astrophysics · Physics 2009-11-07 Raymundo Baptista , Carole A. Haswell , Gino Thomas

We report the results of a time-resolved eclipse mapping of the dwarf nova IP Pegasi during the decline of its May 1993 outburst from HST/FOS fast spectroscopy covering 3 eclipses in the ultraviolet spectral range.

Astrophysics · Physics 2009-11-10 R. K. Saito , R. Baptista , K. Horne

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 minimum of ~82 min for cataclysmic variable stars. Averaging four eclipses reveals…

We have found the first convincing evidence for spiral structure in the accretion disc of a close binary. The eclipsing dwarf nova binary IP Peg, observed during the end phase of a rise to outburst, shows strong Balmer and Helium emission…

Astrophysics · Physics 2016-01-13 D. Steeghs , E. T. Harlaftis , Keith Horne

We present high-speed, three-colour photometry of the faint eclipsing cataclysmic variable OU Vir. For the first time in OU Vir, separate eclipses of the white dwarf and bright spot have been observed. We use timings of these eclipses to…

We present high resolution Hubble Space Telescope ultraviolet spectroscopy of the dwarf nova EK TrA obtained in deep quiescence. The Space Telescope Imaging Spectrograph data reveal the broad Ly-alpha absorption profile typical of a…

Astrophysics · Physics 2009-11-06 B. T. Gaensicke , P. Szkody , E. M. Sion , D. W. Hoard , S. Howell , F. H. Cheng , I. Hubeny

We present a comprehensive photometric dataset taken over the entire outburst of the eclipsing dwarf nova IP Peg in September/October 1997. Analysis of the lightcurves taken over the long rise to the peak-of-outburst shows conclusively that…

Astrophysics · Physics 2009-10-31 N. A. Webb , T. Naylor , Z. Ioannou , W. J. Worraker , J. Stull , A. Allan , R. Fried , N. D James , D. Strange
‹ Prev 1 2 3 10 Next ›