127 datasets found

Keywords: Cataclysmic variable stars

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  • LMC S154 (LHA 120-S 154) light curves

    Classical nova outburst has been suggested for a number of extragalactic symbiotic stars, but in none of the systems has it been proven. In this work we study the nature of one...
  • T Pyx 2011 outburst optical spectra

    We aim to study the spectroscopic and ionized structural evolution of T Pyx during its 2011 outburst, and also study the variation in degree of polarization during its early...
  • VY Scl reduced spectra & radial velocities

    In the context of a large campaign to determine the system parameters of high mass transfer cataclysmic variables, we found VY Scl in a low state in 2008. Making use of this low...
  • IGR J19552+0044 BV light curves and spectra

    Based on XMM-Newton X-ray observations IGR J19552+0044 appears to be either a pre-polar or an asynchronous polar. Aims. We conducted follow-up optical observations to identify...
  • UBVRI photometry and line fluxes of AG Peg

    AG Peg is known as the slowest symbiotic nova, which experienced its nova-like outburst around 1850. After 165 years, during June of 2015, it erupted again showing...
  • R light curves of MN Dra

    We present results of an extensive world-wide observing campaign of MN Draconis. MN Draconis is a poorly known active dwarf nova in the period gap and is one of the only two...
  • R Aqr SPHERE/ZIMPOL narrow-H{alpha} image

    R Aqr is a symbiotic binary system consisting of a mira variable, a hot companion with a spectacular jet outflow, and an extended emission line nebula. Because of its proximity...
  • V407 Cyg spectral variations

    The outburst of the symbiotic recurrent nova V407 Cyg in 2010 has been studied by numerous authors. On the other hand, its spectral variations in the quiescent stage have not...
  • PNV J03093063+2638031 outburst evolution

    We have monitored the 2014 superoutburst of the WZ Sge-type transient PNV J03093063+2638031 for more than four months, from V=11.0 maximum brightness down to V=18.4mag, close to...
  • Spectra of 75 Swift/BAT optical counterparts

    Through an optical campaign performed at four telescopes located in the northern and the southern hemispheres, we obtained optical spectroscopy for 75 counterparts of...
  • UV spectra of old novae

    We present an overview of the UV spectral properties of old novae as a class. The data and results of this paper, together with data from the outburst phases, will be utilized...
  • Photometry of SDSS J152419.33+220920.0

    We present new photometry of the faint (g~19mag) and poorly studied cataclysmic variable SDSS J152419.33+220920.0, analyze its light curve and provide an accurate ephemeris for...
  • VI light curves and spectra of V479 And

    We conducted a multi-wavelength study to unveil the properties of the extremely long-period cataclysmic variable V479 And. We performed series of observations, including...
  • Spectra of 29 Swift/BAT optical counterparts

    Through an optical campaign performed at four telescopes located in the northern and the southern hemispheres, plus archival data from two on-line sky surveys, we obtained...
  • Optical identification of 1RXS J180431.1-273932

    The X-ray source 1RXS J180431.1-273932 has been proposed as a new member of the symbiotic X-ray binary (SyXB) class of systems, which are composed of a late-type giant that...
  • Nova V1280 Sco BVRcIcy light curves

    We present optical (B, V, Rc, Ic and y) and near-infrared (J, H, and Ks) photometric and spectroscopic observations of a classical nova V1280 Scorpii for five years from 2007 to...
  • V795 Her differential photometry

    V-band CCD observations of the cataclysmic variable V795 Her obtained between 2008 and 2010. The observing run on a given night consisted of a dense series of V-band images...
  • Light curves of SDSS J003941.06+005427.5

    We present VLT spectroscopy and NTT photometry of the faint cataclysmic binary SDSS J003941.06+005427.5. This object shows triple-peaked H{alpha} emission with all three peaks...
  • Light curves of SDSS J100658.40+233724.4

    We present time-resolved spectroscopy and photometry of SDSS J100658.40+233724.4, which we have discovered to be an eclipsing cataclysmic variable with an orbital period of...
  • V light curves of DI UMa

    We report an analysis of photometric behaviour of DI UMa, an extremely active dwarf nova. The observational campaign (completed in 2007) covers five superoutbursts and four...
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