EPOXI: COMET 103P/HARTLEY 2 OBSERVATIONS FROM A WORLDWIDE CAMPAIGN

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	EPOXI: COMET 103P/HARTLEY 2 OBSERVATIONS FROM A WORLDWIDE CAMPAIGN
	Meech, KJ; A'Hearn, MF; Adams, JA; Bacci, P; Bai JM(白金明); Barrera, L; Battelino, M; Bauer, JM; Becklin, E; Bhatt, B
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2011-06-10
卷号	734 期号:1
关键词	comets: individual (103P/Hartley 2)
ISSN号	2041-8205
通讯作者	Meech, KJ (reprint author), Univ Hawaii, Inst Astron, 2680 Woodlawn Dr, Honolulu, HI 96822 USA.
产权排序	第五完成单位
英文摘要	Earth- and space-based observations provide synergistic information for space mission encounters by providing data over longer timescales, at different wavelengths and using techniques that are impossible with an in situ flyby. We report here such observations in support of the EPOXI spacecraft flyby of comet 103P/Hartley 2. The nucleus is small and dark, and exhibited a very rapidly changing rotation period. Prior to the onset of activity, the period was similar to 16.4 hr. Starting in 2010 August the period changed from 16.6 hr to near 19 hr in December. With respect to dust composition, most volatiles and carbon and nitrogen isotope ratios, the comet is similar to other Jupiter-family comets. What is unusual is the dominance of CO2-driven activity near perihelion, which likely persists out to aphelion. Near perihelion the comet nucleus was surrounded by a large halo of water-ice grains that contributed significantly to the total water production.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	MIDINFRARED SPECTROMETER ; SPACE-TELESCOPE ; HERSCHEL ; PERFORMANCE ; PHOTOMETRY ; MISSION ; NUCLEUS ; IMAGER ; MIRSI ; DUST
收录类别	SCI
原文出处	http://iopscience.iop.org/article/10.1088/2041-8205/734/1/L1/meta
语种	英语
WOS记录号	WOS:000293135500001
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5407]
专题	云南天文台_丽江天文观测站（南方基地）
推荐引用方式 GB/T 7714	Meech, KJ,A'Hearn, MF,Adams, JA,et al. EPOXI: COMET 103P/HARTLEY 2 OBSERVATIONS FROM A WORLDWIDE CAMPAIGN[J]. ASTROPHYSICAL JOURNAL LETTERS,2011,734(1).
APA	Meech, KJ.,A'Hearn, MF.,Adams, JA.,Bacci, P.,Bai JM.,...&Ziffer, JE.(2011).EPOXI: COMET 103P/HARTLEY 2 OBSERVATIONS FROM A WORLDWIDE CAMPAIGN.ASTROPHYSICAL JOURNAL LETTERS,734(1).
MLA	Meech, KJ,et al."EPOXI: COMET 103P/HARTLEY 2 OBSERVATIONS FROM A WORLDWIDE CAMPAIGN".ASTROPHYSICAL JOURNAL LETTERS 734.1(2011).