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Browsing by Subject "Cataclysmic Variables"

Browsing by Subject "Cataclysmic Variables"

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  • Double radio peak and non-thermal collimated ejecta in RS Ophiuchi following the 2006 outburst 
    Eyres, S. P. S; O'Brien, T. J; Beswick, R; Muxlow, T. W. B; Anupama, G. C; Kantharia, N. G; Bode, M. F; Gawroński, M. P; Feiler, R; Evans, A; Rushton, M. T; Davis, R. J; Prabhu, T; Porcas, R; Hassall, B. J. M (Blackwell Publishing, 2009-05)
    We report Multi-Element Radio-Linked Interferometer Network, Very Large Array, One-Centimetre Radio Array, Very Long Baseline Array (VLBA), Effelsberg and Giant Metrewave Radio Telescope observations beginning 4.5 days ...
  • High speed photometry of PG 1012-029 
    Ashoka, B. N; Seetha, S; Marar, T. M. K; Kasturirangan, K; Rao, U. R; Bhattacharyya, J. C (European Southern Observatory, 1994-03)
    High speed optical photometric observations of PG 1012 - 029, conducted during 1990-1991, confirm the nova-like classification of the object. Several eclipses observed by us have been used to refine the orbital period of ...
  • The Intermediate Polar PQ GEM -- Status of Wet Observations of 1996 
    Marar, T. M. K; Seetha, S; Ashoka, B. N; Kasturirangan, K; Mahra, H. S; Bhattacharyya, J. C; Leibowitz, E. M; Hemar, S; Mendelson, H; Ibbetson, P. A; O'Donoghue, D; Buckley, D. A. H; Breger, M; Handler, G; Sperl, M; Serkowitsch, E; Moskalik, P; Zola, S; Pajdosz, G; Krzesinski, J; Silvotti, R; Vauclair, G; Dolez, N; Solheim, J. E; Pfeiffer, B; Kepler, S. O; Kanaan, A; Provencal, J; Kawaler, S. D; O'Brien, M. S; Nather, R. E; Winget, D. E; Kleinman, S; Nitta, A; Bradley, P. A; Guzik, J. A; Clemens, C; Sullivan, D. J; Jiang, X (Baltic Astronomy, 1998-03)
    A summary of the results on PQ Gem based on WET observations conducted in February 1996 is presented. The 13.9 min spin period of the white dwarf in the system and the orbital side-band at 14.5 min have been detected ...
  • The local stellar population of nova regions in the Large Magellanic Cloud 
    Subramaniam, A; Anupama, G. C (EDP Sciences, 2002-08)
    This study aims at identifying and understanding the parent population of novae in the Large Magellanic Cloud (LMC) by studying the local, projected, stellar population. The star formation history of the local environment ...
  • Nova V4444 Sagittarii 1999 in the early decline and quiescent phases 
    Kamath, U. S; Ashok, N. M; Anupama, G. C (Astronomical Society of India, 2008-12)
    We present near-infrared and optical spectra of the fast nova V4444 Sagittarii at two single epochs in the early decline phase and unfiltered images obtained in quiescence. Based on this and other available data, we discuss ...
  • Optical and near-infrared spectroscopy of nova V1494 Aquilae 1999 no. 2 
    Kamath, U. S; Anupama, G. C; Ashok, N. M; Mayya, Y. D; Sahu, D. K (Monthly Notices of the Royal Astronomical Society, Vol. 361, No. 4, pp. 1165 - 1172, 2005-08)
    Optical and near-infrared spectroscopic observations of the fast nova V1494 Aquilae 1999 no. 2 covering various phases - early decline, transition and nebular - during the first 18 months of its post-outburst evolution are ...
  • Optical and x-ray observations of M31N 2007-12b: an extragalactic recurrent nova with a detected progenitor? 
    Bode, M. F; Darnley, M. J; Shafter, A. W; Page, K. L; Smirnova, O; Anupama, G. C; Hilton, T (The American Astronomical Society, 2009-11)
    We report combined optical and X-ray observations of nova M31N 2007-12b. Optical spectroscopy obtained 5 days after the 2007 December outburst shows evidence of very high ejection velocities (FWHM Hα sime 4500 km s-1). In ...
  • Photometric observations of cataclysmic variables from UPSO, Naini Tal 
    Ashoka, B. N; Seetha, S; Marar, T. M. K; Raj, E; Kasturirangan, K; Mahra, H. S (Astronomical Society of India, 1998)
  • Photometry of EX Hya 
    Shylaja, B. S (Kluwer Academic Publishers, 1985-04)
    Photometric observations of EX Hya in B and V filters are reported. The 67 min modulation of the light curve is also found to be in good agreement with the results of earlier studies. The (B-V) colour variation with respect ...
  • Photometry of intermediate polars AO PSC and V 1223 SGR 
    Padmini, V. N; Marar, T. M. K; Seetha, S; Padmanabhan, P; Kasturirangan, K; Rao, U. R; Bhattacharyya, J. C; Kuppuswamy, K; Rozario, M. J (Springer, 1985-12)
    We present optical photometric observations of the cataclysmic variables AO Psc and V 1223 Sgr, both of which are believed to contain slowly-rotating white-dwarf pulsars. These objectes belong to the new class of intermediate ...
  • SDSS J123813.73-033933.0: a cataclysmic variable evolved beyond the period minimum 
    Aviles, A; Zharikov, S; Tovmassian, G; Michel, R; Tapia, M; Roth, M; Neustroev, V; Zurita, C; Andreev, M; Sergeev, A; Pavlenko, E; Tsymbal, V; Anupama, G. C; Kamath, U. S; Sahu, D. K (Institute of Physics, 2010-03)
    We present infrared JHK photometry of the cataclysmic variable (CV) SDSS J123813.73 – 033933.0 and analyze it along with optical spectroscopy, demonstrating that the binary system is most probably comprised of a massive ...

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