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研究生:林忠義
研究生(外文):Chung-Yi Lin
論文名稱:彗星2001A2(LINEAR)的光度觀測
論文名稱(外文):Photometric Observations of C/2001 A2(LINEAR)
指導教授:葉永烜
指導教授(外文):Wing-Huen Ip
學位類別:碩士
校院名稱:國立中央大學
系所名稱:天文研究所
學門:自然科學學門
學類:天文及太空科學學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:71
中文關鍵詞:彗星
外文關鍵詞:Comet
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論文的工作主要是利用Meade 10” 望遠鏡和羅賽達濾鏡 ( Rosetta filter set ) 在中央大學鹿林山上對於彗星2001 A2(LINEAR)的光度觀測. 這組羅賽達濾鏡包括六個濾鏡, 其中有四個濾鏡是用以測量發射譜線(CN, C2, C3 and NH2), 另外兩個濾鏡則為連續譜 ( BC and RC ). 我們觀測標準星 ( 包括流量型和太陽類型的標準星 ) 並將每個濾鏡所相對應的流量計算出來, 再利用Haser Model 擬合彗星氣體分子的光變曲線, 最終計算得到彗髮中氣體分子的分子產生率. 我們將所得數據與Schleicher 所量測的值比較後, 得到近似的結果!
此外, 我們也將觀測標準星所求出的星等色指數與同樣使用同一組濾鏡觀測的 Dr. Bonev 觀測資料做比較, 也幾乎完全符合! 這顯示著鹿林山天文台的觀測條件是不錯的!
未來, 我們將以這套彗星系統為基礎, 而鹿林山天文台的地理位置正可以使得全球彗星觀測網得以補足, 持續性對彗星做長時間觀測、追蹤,以更進一步瞭解彗星的結構、組成.


Scientific study of cometary morphology and outgassing behaviors requires precise photometric measurements of the fluxes of the optical emissions of the gas comas and dust tails. To initiate such an observational program, we built a robotic remote control system for a Meade 10" telescope on Lu-Lin to observe Comet 2001 A2 (LINEAR) between June and August, 2001. We have used the comet filter set provided by the European Space Agency (ESA) for the ground-based observations of Comet Wirtanen which is the target comet of the Rosetta spacecraft mission. The Rosetta filters have six filters covering four neutral species, CN, C2, C3 and NH2 and two continuum filters for dust emission. As a cooperative effort with the ESA Rosetta Project and Dr. T. Bonev of the Bulgarian Institute of Astronomy (BIA), the NCU group has the responsibility of observing 55 standard stars in the southern sky for the purpose of photometric calibration of the Rosetta filters. In this work we will present basic data for the relative and absolute fluxes of the standard stars we have measured and the preliminary results of the coma profiles of Comet A2.


第一章:緒論
第二章:研究背景簡介
第三章:標準星觀測與羅賽達濾鏡流量的計算
第四章:彗星2001A2 (LINEAR)的觀測
第五章:結論與未來展望


1.Beatty, J. K. 1981, The New Solar System-Foruth Edition-2.Bonnet, R. M. 1995, Comet Science.3.Bonev, T., Borisov, G. and Ivanova, A. 2001, European Geophysical Society, XXVI General Assembly, Nice, France 25 - 30 March 2001, PS7, PS0404.Brandt, J.C. and Chapman, R.D. 1981, Introduction to Comets. 5.Cochran1985}Cochran, A. L. 1985, Ap.J, 289, L388.6.European Southern Observatory 2001, Image was taken with the European Southern Observatory 8.2-m VLT YEPUN telescope.7.Farnham, T. et al. 2000, Icarus 147,180. 8.Fernandez, J. A. and Ip, W.-H. 1987, Icarus 71, 46. 9.Fink, U, Combi, M. R. and Disanti, M.A. 1991, Ap.J, 383, L356. 10.Hergenrother, C. W., Chamberlain, M. and Chamberlain, Y. 2001,Image was taken with Steward Observatory 1.54-m telescope, Lunar and Planetary Lab, University of Arizona.}11.Hwankyung2000}Hwankyung Sung and Michael. S. Bessell, Astron Soc. 2000, 17, 244. 12.Jewitt D. C. and Luu, J. X. 1993, Nature, 362, 730-732. 13.Kharitonov A.V. et al. 1988, Astronomical Data Center, ADC. 14.Lecacheux, A. et al. 2001, International Astronomical Union Circulars, IAUC 7706. 1. 15.David H, Levy 2000, Comets. 16.Oort, J.H. 1950, Bull. Astron. Inst. Neth., vol. 11, p. 91-110.17.Osborn, W. H, AHearn, M. F. et al. 1990, Icarus 88, 225.18.Reinhard, R. 1986, The Giotto encounter with comet Halley, Nature, 321, No. 6067, 313-317.19.ESA 1993, The Rosetta Mission, European Space Agency.20.Schleicher, D. G., Mills, R. L. and Birch, P. V. 1987, Astro. Ap. 187. 531. 21.Schleicher, D. G. et al. 2001, International Astronomical Union Circulars, IAUC 7653. 22.Soderblom, L.A. et al., 2001, Observations of Comet 19P/Borrelly by the Miniature Integrated Camera and Spectrometer Aboard Deep Space 1, Science, Vol296, Issue 5570, 1087-1091. }23.Weaver, H. A. et al. 2000, HST and VLT Investigations of the Fragments of Comet C/1999 S4 (LINEAR), Science, Vol292, Issue 5520, 1329-1334

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