20-22 May 2015
Asia/Bangkok timezone
The Centennial Celebration of General Relativity Theory and 80 Years of Thai Physics Graduate

Follow-up Photometry of New Eclipsing PCEBs from the Sloan Digital Sky Survey: SDSS J214140.43+050730.0

21 May 2015, 08:45
15m
White Lotus ()

White Lotus

Oral presentation Astronomy, Astrophysics, and Cosmology Astronomy, Astrophysics and Cosmology (Sponsored by NARIT)

Speaker

Mr Kittipong Wangnok (School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand)

Description

Post common-envelope binaries (PCEBs) are known as one of the end products of the complex common-envelope process. These systems typically consist of white dwarf star with a low mass companion. While most of PCEBs usually have short orbital periods of a few hours, some systems are found to be in long (>1 day) period. In this work, we present the preliminary result of our follow-up photometric observation on SDSS J214140.43+050730.0 by using the 2.4m Thai National Telescope with ULTRASPEC instrument. The system is a new cataclysmic variables (CVs) which is listed among the recently found white dwarf main sequence binaries from the Sloan Digital Sky Survey. The observation for SDSS J2141+0507 is done on 9th, 22nd, 24th and 25th December 2014 in the SDSS $g^{\prime}$ filter, $KG5^{\prime}$ filter, $r^{\prime}$ filter and $i^{\prime}$ filter, respectively. Our preliminary result on SDSS J2141+0507 show that T0(HJD) and an orbital period are 2457014.00774986 and 0.05469 days, respectively.

Primary author

Mr Kittipong Wangnok (School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand)

Co-authors

Dr Nuanwan Sanguansak (School of Physics, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima 30000, Thailand) Dr Puji Irawati (National Astronomical Research Institute of Thailand,Chiang Mai 50200, Thailand) Prof. Tom Marsh (Department of Physics, University of Warwick, Coventry, CV4 7AL, United Kingdom) Prof. Vik Dhillon (Department of Physics and Astronomy, University of Sheffield , Sheffield S3 7RH, UK)

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