[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5303/PKAS.2015.30.2.193

LONG-TERM VARIATION STUDY OF CATACLYSMIC VARIABLES WITH PALOMAR TRANSIENT FACTORY

YANG, MICHAEL TING-CHANG (Graduate Institute of Astronomy, National Central University)
CHOU, YI (Graduate Institute of Astronomy, National Central University)
HU, CHIN-PING (Graduate Institute of Astronomy, National Central University)
SU, YI-HAO (Graduate Institute of Astronomy, National Central University)
HSIEH, HUNG-EN (Graduate Institute of Astronomy, National Central University)
LIN, CHING-PING (Graduate Institute of Astronomy, National Central University)
CHUANG, PO-SHENG (Graduate Institute of Astronomy, National Central University)
LIAO, NAI-HUI (Graduate Institute of Astronomy, National Central University)

Publication Information

Publications of The Korean Astronomical Society / v.30, no.2, 2015 , pp. 193-195 More about this Journal

Abstract

The Palomar Transient Factory is a project making use of a Schmidt 48 inch telescope located on the Palomar Mountain, which is surveying the sky with dynamical cadences. It was deployed in 2009 and the observed sky region is over 1200 square degrees. We have studied the long-term periodic variabilities of the known galactic cataclysmic variables (CVs). More than 20 of the sources had been found to have long term periodic signals, ranging from several tens of days to several hundreds of days. Some possible scenarios are proposed to explain the results, such as a magnetic field change of the companion star, precession of the accretion disk, triple systems and superoutburst cycles. Some preliminary discussion will be presented in this article.

Keywords

close binary; cataclysmic variable; long-term variation;

Citations & Related Records

Reference

1	Kato, T., 2002, Photometry of the 1991 Superoutburst of EF Pegasi: Super-Quasi-Periodic Oscillations with Rapidly Decaying Periods, PASJ, 54, 87 DOI
2	Kotze, M. M. & Charles, P. A., 2012, Characterizing X-ray Binary Long-term Variability, MNRAS, 420, 1575 DOI ScienceOn
3	Law, N. M., Dekany, R. G., & Rahmer, G., et al., 2010, The Palomar Transient Factory Survey Camera: First Year Performance and Results, SPIE Proc., 7735, 77353M
4	Richman, H. R., Applegate, J. H., & Patterson, J., 1994, Long-term Periods in Cataclysmic Variables, PASP, 106, 1075 DOI
5	Szkody, P., Anderson, S. F., & Agueros, M., et al., 2002, Cataclysmic Variables from The Sloan Digital Sky Survey. I. The First Results, AJ, 123, 430 DOI ScienceOn
6	Chavez, C. E., Tovmassian, G., Aguilar, L. A., Zharikov, S., & Henden, A. A., A Dynamical Explanation for a Longterm Modulation in the Light Curve of FS Aurigae. A Possible Triple Cataclysmic Variable System, 2012, AAP, 538, AA122 DOI
7	Downes, R., Webbink, R. F., & Shara, M. M., 1997, A Catalog and Atlas of Cataclysmic Variables-Second Edition, PASP, 109, 345 DOI