Activity of comet 103P/Hartley 2 from September 30 to November 04, 2010
Activity of comet 103P/Hartley 2 from September 30 to November 04, 2010
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2010年9月30日至11月4日彗星103P/Hartley 2的活动
DOI：
10.1007/s11433-012-4812-8
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Ma YueHua
中科院分区：
文献类型：
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作者：
Shi JianChun;Zhao HaiBin;Ma YueHua
利用中国科学院紫金山天文台盱眙站的近地天体望远镜（NEOT）对103 P/Hartley 2彗星进行了宽波段滤光片CCD测光观测。我们从2010年9月30日至11月4日对彗星进行了监测，并调查了活动的变化。由我们的宽带数据得到的Af ρ参数在46.0 ~ 126.0cm之间变化，并随时间增加。在假设103 P/Hartley 2彗星的彗核为球形的情况下，测量了以Af ρ表示的尘埃产生率，并初步计算了彗核的尘埃（或气体）损失率。测量了2010年9月30日拍摄的103 P/Hartley 2的红外波段图像和表面亮度轮廓，表面亮度轮廓的梯度显示m < −1.5。
The CCD photometric observation of comet 103P/Hartley 2 with broadband optical filters was carried out at Xuyi Station of Purple Mountain Observatory, Chinese Academy of Sciences by use of Near Earth Object Telescope (NEOT). We monitored the comet from September 30 to November 4, 2010 and investigated the variation of activities. TheAfρparameter derived from ourrbroadband data varies from 46.0 to 126.0 cm and increases with time. The dust production rate in terms ofAfρwas measured and a tentative calculation of the dust (or gas) loss-rate of nucleus was executed under the assumption that the nucleus of comet 103P/Hartley 2 is spherical. Ther-band image and the surface brightness profile taken on September 30, 2010 was measured and the gradient of surface brightness profile of 103P/Hartley 2 showedm< −1.5.