UPDATED PHOTOMETRY AND ORBITAL PERIOD ANALYSIS FOR THE POLAR AM HERCULIS ON THE UPPER EDGE OF THE PERIOD GAP

@article{Dai2013UPDATEDPA,
  title={UPDATED PHOTOMETRY AND ORBITAL PERIOD ANALYSIS FOR THE POLAR AM HERCULIS ON THE UPPER EDGE OF THE PERIOD GAP},
  author={Zhibin Dai and Sheng-bang Qian and Lin-jia Li},
  journal={The Astrophysical Journal},
  year={2013},
  volume={774},
  pages={153}
}
Twenty-one new optical light curves, including five curves obtained in 2009 and sixteen curves detected from the AAVSO International Database spanning from 1977 to 2011, demonstrate 16 new primary minimum light times in the high state. Furthermore, seven newly found low-state transient events from 2006 to 2009 were discovered, consisting of five Gaussian-shaped events and two events with an exponential form with decay timescales of > tau((R) over dot2), which is required by numerical… Expand
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1 College of Physics/Department of Physics and Astronomy & Guizhou Provincial Key Laboratory of Public Big Data, Guizhou University, Guiyang 550025, China; liy zhang@hotmail.com 2 Dept. of PhysicsExpand

References

SHOWING 1-10 OF 81 REFERENCES
VARIATION OF THE LIGHT AND PERIOD OF THE MAGNETIC CATACLYSMIC VARIABLE AM Her
Ground-based, long-term optic variability of AM Her, covering the period between 2003-2008, has been conducted to study the features seen in both low and high states of the system. Low-state analysisExpand
A Multiwavelength Study of AM Herculis during the 2002-2004 Low States
We present two epochs of low-state, near-IR spectroscopy of the polar prototype AM Her, along with K-band spectroscopy and JHK photometry. Combining our data with long-term (RoboScope) photometry ofExpand
Orbital period analysis of eclipsing post-novae T Aurigae: Evidence of magnetic braking and an unseen companion
Four new CCD times of light minimum of T Aurigae are presented. The orbital period variation is analyzed by means of the standard O-C technique. The new times of light minimum indicate that a similarExpand
Joint infrared and visual monitoring of AM Herculis
Four cycles of the flux from the 3.1 hour X-ray variable AM Her have been observed simultaneously at four wavelengths in the visible and near-infrared. The data show periodic variations at allExpand
Photometry of AM Herculis: a slow optical pulsar
Multicolor photometry of the x-ray binary AM Her suggests that the red component of the optical flux is closely related to the source of optical circular polarization in the system. From the periodicExpand
Orbital period analyses for two cataclysmic variables: UZ Fornacis and V348 Puppis inside the period gap
Four new CCD eclipse timings of the white dwarf for polar UZ Fornacis and six updated CCD mid-eclipse times for SW-Sex-type nova-like V348 Puppis are obtained. Detailed O-C analyses are made for bothExpand
A model for the optical high state light curve of AM Herculis
We present a simple quantitative model that can describe the photometric B and V band light curves of AM Herculis obtained during a high state. The double-humped shape of the V band light curve isExpand
Orbital Period Analysis of Eclipsing Z Cam-Type Dwarf Nova EM Cygni : Evidence of Magnetic Braking and a Third Body
Combining with our newest CCD times of light minimum of EM Cygni, all 45 available times of light minimum, including 7 data with large scatters, were compiled and an updated O - C analysis was made.Expand
Possible detection of two giant extrasolar planets orbiting the eclipsing polar UZ Fornacis
We present new high-speed, multi-observatory, multi-instrument photometry of the eclipsing polar UZ For in order to measure precise mid-eclipse times with the aim of detecting any orbital periodExpand
Low-State Flaring Events in AM Herculis
A photometric monitoring campaign has been conducted in order to investigate the character and origin of flaring events occasionally seen in the long-term low-state light curve of the polar prototypeExpand
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