Report on the Kiso cometary dust trail survey |
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| Authors: | M Ishiguro Y Sarugaku S Nishihara Y Nakada S Nishiura T Soyano K Tarusawa T Mukai SM Kwon S Hasegawa F Usui M Ueno |
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| Institution: | 1. Department of Physics and Astronomy, Seoul National University, San 56-1, Sillim-dong, Gwanak-gu, Seoul 151-747, Republic of Korea;2. Kiso Observatory, Institute of Astronomy, University of Tokyo, Mitake 10762-30, Kiso-machi, Kiso-gun, Nagano 397-0101, Japan;3. Graduate School of Science, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan;4. Institute of Astronomy, University of Tokyo, Osawa 2-21-1, Mitaka, Tokyo 181-0015, Japan;5. Department of Astronomy and Earth Sciences, Tokyo Gakugei University, Nukui-kita 4-1-1, Koganei, Tokyo 184-8501, Japan;6. Graduate School of Science, Kobe University, Nada, Kobe 657-8501, Japan;g Department of Science Education, Kangwon National University, 192-1 Hyoja-dong, Chuncheon, Kangwon-do 200-701, Republic of Korea;h Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Yoshinodai 3-1-1, Sagamihara, Kanagawa 229-8510, Japan;i Graduate School of Arts and Sciences, University of Tokyo, Komaba 3-8-1, Meguro-ku, Tokyo 153-8902, Japan |
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| Abstract: | Cometary dust trails were first observed by IRAS; they are widely known to be the origins of meteoric showers. A new window has been opened for the study of dust trails, using ground-based observations. We succeeded in obtaining direct images of the 22P/Kopff dust trail with the Kiso 1.05-m Schmidt telescope. Following this initial success, we have continued to perform a dust trail survey at Kiso. As a result of this survey, we have detected dust trails along the orbit of six periodic comets, between February 2002 and March 2004. The optical depth of these dust trails are 10−9 to 10−8, which is consistent with IRAS measurements. In this paper, we describe the observations and data reduction procedures, and report the brief result obtained between February 2002 and March 2004. |
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| Keywords: | Comets: general Interplanetary medium Meteors Meteoroids |
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