Author's Organization:Department of Astronomy and Earth Sciences,Tokyo Gakugei University Department of Astronomy and Earth Sciences,Tokyo Gakugei University Department of Astronomy and Earth Sciences,Tokyo Gakugei University
Published: December 15, 1989Received: August 04, 1989Available on J-STAGE: April 11, 2008Accepted: November 01, 1989
Advance online publication: -
Revised: -