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研究生: 黃文正
Huang, Wen-Cheng
論文名稱: 搜尋白矮星 HIP 3678A 的 p-模式 震盪
Search for p-mode oscillations in white dwarf HIP 3678A
指導教授: 張祥光
Chang, Hsiang-Kuang
口試委員: 賴詩萍
Lai, Shih-Ping
潘國全
Pan, Kuo-Chuan
學位類別: 碩士
Master
系所名稱: 理學院 - 物理學系
Department of Physics
論文出版年: 2019
畢業學年度: 107
語文別: 英文
論文頁數: 36
中文關鍵詞: 白矮星震盪相對震幅
外文關鍵詞: p-mode oscillations, HIP 3678A, NGC246, MIOSOTYS, WD 0044-121, Calar Alto Observatory, relative amplitude
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  • 此論文的研究主題為找尋GW Vir 類型白矮星─ HIP 3678A 的p-模式震盪。使
    用架設在西班牙Calar Alto 天文台的1.23米和2.2米的高速測光系統MIOSOTYS ,
    在2014和2015年以20赫茲的頻率觀測HIP 3678 各三個晚上。觀測數據經處理和分
    析後,未偵測到白矮星HIP 3678A 的p-模式震盪。在三個標準差的信心水準下,
    估計在頻率2到10赫茲間, HIP 3678A 的p-模式震盪相對震幅上限為1.7x10^-4。


    In order to search for p-mode oscillations in HIP 3678 A(a GW Vir star, alias
    WD 0044-121), the central star of planetary nebula NGC246, we use MIOSOTYS,
    a multi-fiber photometer mounted on the 1.23-m and 2.2-m telescopes at Calar Alto
    Observatory to observe HIP 3678 with a 20-Hz cadence for 3 nights in both 2014
    and 2015. As a result, p-mode oscillations have not been detected in HIP 3678 A. We
    estimate the upper limit to the relative amplitude of p-mode oscillations at 1.7x10^-4, in the frequency range from 2 to 10 Hz.

    致謝i Acknowledgments ii 摘要iii Abstract iv Contents v List of Figures vi List of Tables vii 1 Introduction 1 1.1 Pulsating White Dwarfs . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.2 Motivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 Observations and Data reduction 9 2.1 Observations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2 Data reduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 3 Timing Analysis 17 3.1 Fourier power and relative amplitude . . . . . . . . . . . . . . . . . . . 17 3.2 Probability Distribution . . . . . . . . . . . . . . . . . . . . . . . . . . 18 4 Results and Discussions 19 4.1 Periodicity search . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 4.2 Summary and discussion . . . . . . . . . . . . . . . . . . . . . . . . . . 29 A Appendix: Examination of the timing analysis 32 References 34

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