Publications of The Korean Astronomical Society (천문학논총)
- Volume 13 Issue 1 Serial No. 14
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- Pages.17-30
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- 1998
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- 1225-1534(pISSN)
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- 2287-6936(eISSN)
STUDY OF DOPPLER VELOCITY DISTRIBUTION IN AN ACTIVE PROMINENCE
CCD 분광 관측에 의한 활동홍염의 도플러 시선속도분포 연구
- PARK YOUNG DEUK (Bohyunsan Optical Astronomy Observatory, Korea Astronomy Observatory) ;
- YUN HONG SIK (Department of Astronomy, Seoul National University) ;
- MOON YONG-JAE (Bohyunsan Optical Astronomy Observatory, Korea Astronomy Observatory)
- Published : 1998.12.01
Abstract
To study kinematics of solar prominences, we have made Ha spectrographic study of an eruptive prominence which appeared on the 27th of August, 1992 with a position angle of 270 deg. The observation was carried out by a Littrow type spectrograph and a G1 CCD camera attached to the 25cm coronagraph at Norikura Coronal Station. In taking the spectral data the slit was placed in parallel to the solar limb at 7 different heights, each being separated by 5 arcsec with a time step of 30 sec. The observed eruptive prominence shows a wide range of line of sight Doppler velocity, spanning from
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