Observations of the new Camelopardalids meteor shower using a 38.9 MHz radar at Mohe, China

doi:10.1016/j.icarus.2015.02.021

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院地球与行星物理重点实验室

	Observations of the new Camelopardalids meteor shower using a 38.9 MHz radar at Mohe, China
	Younger, J. P.1,2; Reid, I. M.1,2; Li, G.3; Ning, B.3; Hu, L.3
刊名	ICARUS
	2015-06-01
卷号	253 页码:25-30
关键词	Meteors Radar observations Comets, dust Orbit determination Data reduction techniques
DOI	10.1016/j.icarus.2015.02.021
文献子类	Article
英文摘要	The Camelopardalids meteor shower was predicted to occur for the first time on 24 May 2014, based on optical observations of the comet 209P/LINEAR. Using a 38.9 MHz meteor radar located at Mohe, China, we were able to detect approximately 590 shower meteors originating from an average pre-infall radiant of R.A. = 129.1 degrees +/- 9.8 degrees, declination = 79.4 degrees +/- 1.6 degrees (J2000) with a geocentric velocity of 16.0 +/- 1.6 km s(-1). Measurements of the shower duration, direction, velocity, and individual meteor detection heights facilitated a detailed analysis of the parent debris stream. Orbital parameters were calculated including a semi-major axis of 2.86 AU, eccentricity of 0.659, and inclination of 21.1 degrees. Combining orbital parameters with the shower activity duration FWHM of 5.09 h, it was found that the stream has a FWHM of at least 211,000 km at 1 AU, as measured perpendicular to the direction of orbital motion. A comparison of shower meteor detection heights and diffusion coefficient estimates with the sporadic background is consistent the prediction of Ye and Wiegert (Ye, (2, Wiegert, P. [2014]. Mon. Not. R. Astron. Soc. 437, 3283-3287) that Camelopardalid meteoroids are biased towards larger sizes or that Cameloppardalid meteoroids are less fragile than sporadic background meteoroids. (C) 2015 Elsevier Inc. All rights reserved.
WOS关键词	INTERFEROMETER ; ORBITS ; MST
WOS研究方向	Astronomy & Astrophysics
语种	英语
WOS记录号	WOS:000353755200003
资助机构	Natural Science Foundation of China(41174136 ; Natural Science Foundation of China(41174136 ; 41374163 ; 41374163 ; 41374164) ; 41374164) ; Natural Science Foundation of China(41174136 ; Natural Science Foundation of China(41174136 ; 41374163 ; 41374163 ; 41374164) ; 41374164)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/62609]
专题	地质与地球物理研究所_中国科学院地球与行星物理重点实验室
作者单位	1.ATRAD Pty Ltd, Thebarton, SA 5031, Australia 2.Univ Adelaide, Sch Chem & Phys, Adelaide, SA 5005, Australia 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Younger, J. P.,Reid, I. M.,Li, G.,et al. Observations of the new Camelopardalids meteor shower using a 38.9 MHz radar at Mohe, China[J]. ICARUS,2015,253:25-30.
APA	Younger, J. P.,Reid, I. M.,Li, G.,Ning, B.,&Hu, L..(2015).Observations of the new Camelopardalids meteor shower using a 38.9 MHz radar at Mohe, China.ICARUS,253,25-30.
MLA	Younger, J. P.,et al."Observations of the new Camelopardalids meteor shower using a 38.9 MHz radar at Mohe, China".ICARUS 253(2015):25-30.