Further Measurements of the New Dwarf Nova J2138+26

ORAL

Abstract

J2138+26 is a new WZ Sge-type dwarf nova, discovered by Dae-Am Yi et al. on May 7, 2010 (CBET 2273). The object is suggested to be similar to GW Lib, another WZ Sge star outbursting in 2007, in terms of a low inclination angle and apparent brightness. J2138+26 is a binary star system with a variable light output caused by precession of the accretion disk around the white dwarf in the cataclysmic variable system. J2138 enters certain periods of outburst when it is significantly brighter, and its regular light variations (from precession), called superhumps, have a changing period. Additional photometric observation of this system provides information about the changing amplitude and period of its superhumps and outbursts, which in turn helps to determine the system's history and physical activity, as well as providing insight into cataclysmic variable systems and their behavior in general. The research in July 2010, done by the named authors and using a 0.6-m telescope from the Sternberg Astronomical Institute's branch of the Crimean Observatory in Crimea, was focused on such photometric observation. Data and analysis of the superhump periods will be presented. The analysis of data taken by Dr. Voloshina and ourselves will be presented with a focus on the changing amplitude and period of J2138, and the physical significance of these results discussed.

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Authors

  • Jared Rovny

    University of Dallas

  • Andrey Chabanov

    West Texas A\&M University, Rhodes College, Texas Woman's University, University of Texas at San Antonio, Texas A\&M University, Department of Physics, University of Texas at Arlington, Texas State University, Pajarito Scientific Corporation, Idaho National Laboratory, Duke University, UNC, Department of Chemistry, UTSA, Department of Physics and Astronomy, UTSA, The University of Texas at San Antonio, Harvar-Smithsonian Center for Astrophysics, University of New Mexico, Maria Mitchel Observatory, NRAO, University of Alabama, Trinity University, Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, Texas 78249, V. Alecsandri College, Bacau, Romania, University of Texas at Dallas, Argonne National Laboratory, Western Michigan University, Institute of Physics, UNAM, Mexico, University of North Texas - Chemistry, University of St. Thomas, SwRI San Antonio, Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Department of Electrical and Computer Engineering, University of Texas at Arlington, Department of Physics, University of Texas at Brownsville, SciPrint.org, The University of Texas at Austin, Georgia Tech, MIT, University of Tennessee, University of Michigan, ORNL, Texas A&M University-Commerce, University of Texas San Antonio, University of Texas at Brownsville, University of Dallas, Sternberg Astronomical Institute, SwRI, CU-Boulder, SwRI/UTSA, Southwest Research Institute, JILA, University of Colorado, Department of Physics, Texas A\&M University, Stephen F. Austin State University, Angelo State University, St. Mary's University, Physics Department, University of South Florida, CINVESTAV, Queretaro, Mexico, Department of Physics, UCSD, LANSCE, Los Alamos National Laboratory, Department of Physics and Astronomy, Texas A\&M University, Texas A\&M University: Department of Physics, Texas Christian University, Fort Worth, TX, Paschal High School, Fort Worth, TX, Tarleton State University, Stephenville, TX, Paine College, Augusta, GA, University of Houston, University of Texas at Arlington, IREAP, Department of Physics, University of Maryland, Air Force Research Laboratory, Institute for Quantum Studies and Department of Physics, Texas A\&M Universtity, College Station, Texas 77843, USA, Max-Planck Institut for Kernphysik, Saupfercheckweg 1,D-69117 Heidelberg, Germany, The National Center for Mathematics and Physics, P.O. Box 6086, KACST, Riyadh 11442, Saudi Arabia

  • Andrey Chabanov

    West Texas A\&M University, Rhodes College, Texas Woman's University, University of Texas at San Antonio, Texas A\&M University, Department of Physics, University of Texas at Arlington, Texas State University, Pajarito Scientific Corporation, Idaho National Laboratory, Duke University, UNC, Department of Chemistry, UTSA, Department of Physics and Astronomy, UTSA, The University of Texas at San Antonio, Harvar-Smithsonian Center for Astrophysics, University of New Mexico, Maria Mitchel Observatory, NRAO, University of Alabama, Trinity University, Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, Texas 78249, V. Alecsandri College, Bacau, Romania, University of Texas at Dallas, Argonne National Laboratory, Western Michigan University, Institute of Physics, UNAM, Mexico, University of North Texas - Chemistry, University of St. Thomas, SwRI San Antonio, Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Department of Electrical and Computer Engineering, University of Texas at Arlington, Department of Physics, University of Texas at Brownsville, SciPrint.org, The University of Texas at Austin, Georgia Tech, MIT, University of Tennessee, University of Michigan, ORNL, Texas A&M University-Commerce, University of Texas San Antonio, University of Texas at Brownsville, University of Dallas, Sternberg Astronomical Institute, SwRI, CU-Boulder, SwRI/UTSA, Southwest Research Institute, JILA, University of Colorado, Department of Physics, Texas A\&M University, Stephen F. Austin State University, Angelo State University, St. Mary's University, Physics Department, University of South Florida, CINVESTAV, Queretaro, Mexico, Department of Physics, UCSD, LANSCE, Los Alamos National Laboratory, Department of Physics and Astronomy, Texas A\&M University, Texas A\&M University: Department of Physics, Texas Christian University, Fort Worth, TX, Paschal High School, Fort Worth, TX, Tarleton State University, Stephenville, TX, Paine College, Augusta, GA, University of Houston, University of Texas at Arlington, IREAP, Department of Physics, University of Maryland, Air Force Research Laboratory, Institute for Quantum Studies and Department of Physics, Texas A\&M Universtity, College Station, Texas 77843, USA, Max-Planck Institut for Kernphysik, Saupfercheckweg 1,D-69117 Heidelberg, Germany, The National Center for Mathematics and Physics, P.O. Box 6086, KACST, Riyadh 11442, Saudi Arabia

  • Andrey Chabanov

    West Texas A\&M University, Rhodes College, Texas Woman's University, University of Texas at San Antonio, Texas A\&M University, Department of Physics, University of Texas at Arlington, Texas State University, Pajarito Scientific Corporation, Idaho National Laboratory, Duke University, UNC, Department of Chemistry, UTSA, Department of Physics and Astronomy, UTSA, The University of Texas at San Antonio, Harvar-Smithsonian Center for Astrophysics, University of New Mexico, Maria Mitchel Observatory, NRAO, University of Alabama, Trinity University, Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, Texas 78249, V. Alecsandri College, Bacau, Romania, University of Texas at Dallas, Argonne National Laboratory, Western Michigan University, Institute of Physics, UNAM, Mexico, University of North Texas - Chemistry, University of St. Thomas, SwRI San Antonio, Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Department of Electrical and Computer Engineering, University of Texas at Arlington, Department of Physics, University of Texas at Brownsville, SciPrint.org, The University of Texas at Austin, Georgia Tech, MIT, University of Tennessee, University of Michigan, ORNL, Texas A&M University-Commerce, University of Texas San Antonio, University of Texas at Brownsville, University of Dallas, Sternberg Astronomical Institute, SwRI, CU-Boulder, SwRI/UTSA, Southwest Research Institute, JILA, University of Colorado, Department of Physics, Texas A\&M University, Stephen F. Austin State University, Angelo State University, St. Mary's University, Physics Department, University of South Florida, CINVESTAV, Queretaro, Mexico, Department of Physics, UCSD, LANSCE, Los Alamos National Laboratory, Department of Physics and Astronomy, Texas A\&M University, Texas A\&M University: Department of Physics, Texas Christian University, Fort Worth, TX, Paschal High School, Fort Worth, TX, Tarleton State University, Stephenville, TX, Paine College, Augusta, GA, University of Houston, University of Texas at Arlington, IREAP, Department of Physics, University of Maryland, Air Force Research Laboratory, Institute for Quantum Studies and Department of Physics, Texas A\&M Universtity, College Station, Texas 77843, USA, Max-Planck Institut for Kernphysik, Saupfercheckweg 1,D-69117 Heidelberg, Germany, The National Center for Mathematics and Physics, P.O. Box 6086, KACST, Riyadh 11442, Saudi Arabia

  • Andrey Chabanov

    West Texas A\&M University, Rhodes College, Texas Woman's University, University of Texas at San Antonio, Texas A\&M University, Department of Physics, University of Texas at Arlington, Texas State University, Pajarito Scientific Corporation, Idaho National Laboratory, Duke University, UNC, Department of Chemistry, UTSA, Department of Physics and Astronomy, UTSA, The University of Texas at San Antonio, Harvar-Smithsonian Center for Astrophysics, University of New Mexico, Maria Mitchel Observatory, NRAO, University of Alabama, Trinity University, Department of Physics and Astronomy, University of Texas at San Antonio, San Antonio, Texas 78249, V. Alecsandri College, Bacau, Romania, University of Texas at Dallas, Argonne National Laboratory, Western Michigan University, Institute of Physics, UNAM, Mexico, University of North Texas - Chemistry, University of St. Thomas, SwRI San Antonio, Alan G. MacDiarmid NanoTech Institute, University of Texas at Dallas, Department of Electrical and Computer Engineering, University of Texas at Arlington, Department of Physics, University of Texas at Brownsville, SciPrint.org, The University of Texas at Austin, Georgia Tech, MIT, University of Tennessee, University of Michigan, ORNL, Texas A&M University-Commerce, University of Texas San Antonio, University of Texas at Brownsville, University of Dallas, Sternberg Astronomical Institute, SwRI, CU-Boulder, SwRI/UTSA, Southwest Research Institute, JILA, University of Colorado, Department of Physics, Texas A\&M University, Stephen F. Austin State University, Angelo State University, St. Mary's University, Physics Department, University of South Florida, CINVESTAV, Queretaro, Mexico, Department of Physics, UCSD, LANSCE, Los Alamos National Laboratory, Department of Physics and Astronomy, Texas A\&M University, Texas A\&M University: Department of Physics, Texas Christian University, Fort Worth, TX, Paschal High School, Fort Worth, TX, Tarleton State University, Stephenville, TX, Paine College, Augusta, GA, University of Houston, University of Texas at Arlington, IREAP, Department of Physics, University of Maryland, Air Force Research Laboratory, Institute for Quantum Studies and Department of Physics, Texas A\&M Universtity, College Station, Texas 77843, USA, Max-Planck Institut for Kernphysik, Saupfercheckweg 1,D-69117 Heidelberg, Germany, The National Center for Mathematics and Physics, P.O. Box 6086, KACST, Riyadh 11442, Saudi Arabia