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Related papers: HST/FOS Eclipse mapping of IP Pegasi in outburst

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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

(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 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

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 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 high speed photometric observations of the eclipsing dwarf nova IP Peg taken with the triple-beam camera ULTRACAM mounted on the William Herschel Telescope. The primary eclipse in this system was observed twice in 2004, and then…

Solar and Stellar Astrophysics · Physics 2015-05-14 C. M. Copperwheat , T. R. Marsh , V. S. Dhillon , S. P. Littlefair , R. Hickman , B. T. Gaensicke , J. Southworth

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

Eclipse lightcurves of the dwarf nova IP Peg during the November 1996 outburst are analysed with eclipse mapping techniques to constrain the location and investigate the spatial structure of the spiral shocks observed in the Doppler…

Astrophysics · Physics 2009-10-31 Raymundo Baptista , E. Harlaftis , D. Steeghs

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 analysis of eclipses observed in dwarf nova HT Cas during its superoutburst in November 2010. Detection of hot spot was confirmed.

Solar and Stellar Astrophysics · Physics 2013-12-11 K. Bakowska , A. Olech

We present results of a world-wide observing campaign of the eclipsing dwarf nova - HT Cas during its superoutburst in November 2010. Using collected data we were able to conduct analysis of the light curves and we calculated $O-C$…

Solar and Stellar Astrophysics · Physics 2013-12-19 K. Bakowska , A. Olech , A. Rutkowski , R. Koff , E. de Miguel , M. Otulakowska-Hypka

During the British Astronomical Association (BAA) 2022 campaign, 27436 photometric observations of the dwarf nova (DN) CG Draconis were made, with 106 eclipses recorded. This work summarizes the new data available and provides updated…

Solar and Stellar Astrophysics · Physics 2023-05-03 Maxim Usatov , Jeremy Shears

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

We present ROSAT X-ray and optical light curves of the 1994 February superoutburst of the eclipsing SU UMa dwarf nova OY Carinae. There is no eclipse of the flux in the ROSAT HRI light curve. Contemporaneous `wide B' band optical light…

Astrophysics · Physics 2009-10-31 Gabriel W. Pratt , B. J. M. Hassall , T. Naylor , Janet H. Wood , J. Patterson

Up to now, only a very small number of dwarf novae have been studied during their outburst state (~30 per cent in the Northern hemisphere). In this paper we present the first comprehensive atlas of outburst spectra of dwarf novae. We study…

Astrophysics · Physics 2009-11-07 L. Morales-Rueda , T. R. Marsh

Quasi-coherent oscillations have been detected in the extreme ultraviolet flux of the dwarf nova SS Cygni during observations with the Extreme Ultraviolet Explorer satellite of the rise and plateau phases of an anomalous outburst in 1993…

Astrophysics · Physics 2009-10-28 Christopher W. Mauche

We report the detection of the hot spot in light curves of the eclipsing dwarf nova HT Cassiopeiae during its superoutburst in 2010 November. Analysis of eight reconstructed light curves of the hot spot eclipses showed directly that the…

Solar and Stellar Astrophysics · Physics 2014-10-08 K. Bakowska , A. Olech

We present photometry obtained during the 2012 May and September outbursts of the frequently outbursting dwarf nova, V1227 Her. Superhumps were present in both cases with a peak-to peak amplitude of up to 0.28 mag, showing these events to…

Solar and Stellar Astrophysics · Physics 2013-04-11 Jeremy Shears , Ian Miller , Roger Pickard , Richard Sabo

We observed an X-ray selected, deeply eclipsing cataclysmic variable IR Com (=S 10932). We detected an outburst occurring on 1996 January 1. The light curve of the outburst closely resembled that of a normal outburst of an SU UMa-type dwarf…

Astrophysics · Physics 2015-06-24 Taichi Kato , Hajime Baba , Daisaku Nogami

We observed the 2002 October-November outburst of the dwarf nova CW Mon. The outburst showed a clear signature of a premaximum halt, and a more rapid decline after reaching the outburst maximum. On two separate occasions, during the…

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