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Five main tail streamers of Comet Halley
Zhao, HB; Hu, ZW; Wang, JZ; Hou, ZY
2002-07-01
Source PublicationCHINESE ASTRONOMY AND ASTROPHYSICS
ISSN0275-1062
Volume26Issue:3Pages:339-347
AbstractIt is of much interest that Comet Halley displayed long and straight main tails (tail streamers) even at large heliocentric distances. Streamers are usually thought to be plasma in nature. However, a dust streamer may be seen superimposed on the main tail when the Earth is close to the comet's orbital plane. Because of the broad sensitive wave range of the photographic plate and of projection effect, both plasma and dust streamers may be superimposed in the image. In this paper, photometric and geometric measurements of five main tail streamers of Comet 1P/Halley at different heliocentric distances are made and compared. The brightness profiles along streamer axes, the full widths at half maximum (FWHMs) of several transverse cuts, the apparent and actual aberration (or lag) angles of the axes as well as the tail lengths are obtained. Among the streamers recorded on blue plates, two before the perihelion passage are definitely plasma streamers. The similarity of the photometry and geometric features of the five streamers and other lines of evidence suggest that the other three streamers axe also mainly plasma streamers, while any contamination by dust would be secondary.
KeywordComet Halley Main Tail Streamer Aberration Angle Photometry
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000177827900011
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/7795
Collection盱眙天文观测站
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
3.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China
Recommended Citation
GB/T 7714
Zhao, HB,Hu, ZW,Wang, JZ,et al. Five main tail streamers of Comet Halley[J]. CHINESE ASTRONOMY AND ASTROPHYSICS,2002,26(3):339-347.
APA Zhao, HB,Hu, ZW,Wang, JZ,&Hou, ZY.(2002).Five main tail streamers of Comet Halley.CHINESE ASTRONOMY AND ASTROPHYSICS,26(3),339-347.
MLA Zhao, HB,et al."Five main tail streamers of Comet Halley".CHINESE ASTRONOMY AND ASTROPHYSICS 26.3(2002):339-347.
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