LONG-TERM VARIATION STUDY OF CATACLYSMIC VARIABLES WITH PALOMAR TRANSIENT FACTORY
| Autor: | Michael Ting-Chang Yang, Po-Sheng Chuang, Ching-Ping Lin, Yi Chou, Chin-Ping Hu, Nai-Hui Liao, Hung-En Hsieh, Yi-Hao Su |
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| Rok vydání: | 2015 |
| Předmět: |
Physics
media_common.quotation_subject Astrophysics::Instrumentation and Methods for Astrophysics Cataclysmic variable star Astronomy Astrophysics::Cosmology and Extragalactic Astrophysics General Medicine Astrophysics Term (time) law.invention Telescope Sky law Precession Astrophysics::Solar and Stellar Astrophysics Factory (object-oriented programming) Astrophysics::Earth and Planetary Astrophysics Transient (oscillation) Variation (astronomy) Astrophysics::Galaxy Astrophysics media_common |
| Zdroj: | Publications of The Korean Astronomical Society. 30:193-195 |
| ISSN: | 1225-1534 |
| DOI: | 10.5303/pkas.2015.30.2.193 |
| Popis: | 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 eld change of the companion star, precession of the accretion disk, triple systems and superoutburst cycles. Some preliminary discussion will be presented in this article. |
| Databáze: | OpenAIRE |
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