Orbital Period Change and Light Curve Analysis of a Binary System V410 Aurigae
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Abstract
The binary star system V410 Aurigae is a close binary system which an orbital period decreasing continuously, leading to the suspicion that a third body may be present in the system. This research is an analysis to calculate the new orbital period and light curve of the binary star V410 Aurigae. Using a reflecting telescope, Plane wave control system, diameter of 0.7 m at Nakhon Ratchasima regional observatory for the public, National Astronomical Research Institute of Thailand (public organization). The results have shown that the binary star V410 Aurigae has a new linear ephemeris equation equal to 2453057.95623 + 0.36633E with an orbital period of 0.36633 days. When considering the O-C diagram, the trend of the O-C curve shows an upside-down parabola. This indicates that the binary star V410 Aurigae has a tendency to period increase. Consistent with the calculation result that the orbital period change rate increases to 2.5815 x 10-16 seconds per year. From the O-C residual diagram, the curve has a sinusoidal waveform. This indicates that within a binary star, there may be a third body within the system. When calculating the oscillation of the system, it was found that it has a semi-amplitude of 0.03122 days. This indicates that the third body is 54.09241 AU away from the binary star system. From the analysis, it can be concluded that the binary star V410 Aurigae is on an evolutionary process from a contact binary system to a detached binary system.
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บทความ ข้อมูล เนื้อหา รูปภาพ ฯลฯ ที่ได้รับการเผยแพร่ในวารสารวิทยาศาสตร์และเทคโนโลยี มรย. นี้ ถือเป็นลิขสิทธิ์ของวารสารวิทยาศาสตร์และเทคโนโลยี มรย. หากบุคคลหรือหน่วยงานใดต้องการนำทั้งหมดหรือส่วนหนึ่งส่วนใดไปเผยแพร่ต่อหรือกระทำการใดๆ จะต้องได้รับอนุญาตเป็นลายลักษณ์อักษรจากวารสารวิทยาศาสตร์และเทคโนโลยี มรย. ก่อนเท่านั้น
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