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題 名 | 在疏散星團中尋找系外行星與變星=Search for Exoplanets and Variable Stars in Open Clusters |
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作 者 | 胡瑞華; 葉永烜; | 書刊名 | 臺北天文館學報 |
卷 期 | 3 民94.12 |
頁 次 | 頁48-56 |
分類號 | 323.86 |
關鍵詞 | 系外行星; 變星; 疏散星團; Exoplanets; Variable star; Open cluster; |
語 文 | 中文(Chinese) |
中文摘要 | 我們使用鹿林一米望遠鏡觀測疏散星團NGC 2324、NGC 2374 及NGC 2420,利用掩星的方式尋找系外行星。行星掩星造成的光度變化需要高精確度的測光,以及長時間的觀測。以此連續觀測方法及類似的資料處理分析,可以尋找短週期的變星。在我們觀測的十個晚上,六個晚上可分析的資料中,沒有找到掩星現象。在NGC 2324 中找到兩個變星候選星,NGC 2374 中找到四個,NGC 2420 沒有找到變星候選星。 |
英文摘要 | We present results of the search for exoplanets and variable stars in open cluster fields, NGC 2324, NGC 2374, NGC 2420, with the Lulin One-meter Telescope (LOT). Our main scientific goal is to use time series CCD photometry survey to detect exoplanets via transit effects. Such detection technique demands high-precision photometry now being implemented and gradually improved at Lulin. The secondary scientific goal is to discover and study variable stars with the same data set and similar data analysis methods. Two variable candidates have been found in the NGC 2324 star field and four variable candidates in the NGC 2374 star field but no transit events detected. In the NGC 2420, no varable has been found. |
本系統中英文摘要資訊取自各篇刊載內容。