Research of activity of Main Belt Comets 176P/LINEAR, 238P/Read and 288P/(300163) 2006 VW139

Research of activity of Main Belt Comets 176P/LINEAR, 238P/Read and 288P/(300163) 2006 VW139
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主带彗星 176P/LINEAR、238P/Read 和 288P/(300163) 2006 VW139 活动研究

DOI:
10.1038/s41598-019-41880-0
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发表时间:
2019-04
期刊:
影响因子:
4.6
通讯作者:
Xu Ruiqi
Xu Ruiqi
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Shi Jianchun;Ma Yuehua;Liang He;Xu Ruiqi

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主带彗星作为一类新的彗星,近年来受到越来越多的关注。为了研究三个MBC 176 P/LINEAR,238 P/Read和288 P/(300163)2006 VW 139的活动和物理性质,我们在UT 2016年11月18日至19日使用台湾鹿林天文台的1米光学望远镜对三个MBC进行了宽带CCD测光。通过比较彗星表面亮度剖面和恒星表面亮度剖面,以及彗星绝对星等和不活跃核的星等,发现176 P/LINEAR是不活跃的,而238 P/Read和288 P/(300163)2006 VW 139是活跃的。通过测光研究,得到了Af ρ值和产尘率。最后对三种MBC的活性进行了讨论。测光结果表明,238 P/Read和288 P/(300163)2006 VW 139的总尘埃质量与大多数已知的MBC具有相同的星等。
As a new class of comet, main belt comets (MBCs) have attracted more and more attention in recent years. To study activity and physical properties of three MBCs 176P/LINEAR, 238P/Read and 288P/(300163) 2006 VW139, we carried out broadband CCD photometry of three MBCs on UT 2016 November 18–19 with the 1-m optical telescope at Lulin Observatory in Taiwan. By comparing cometary surface brightness profiles to stellar surface brightness profiles, and by comparing cometary absolute magnitude to the expected magnitude of inactive nucleus, we found that 176P/LINEAR was inactive, while 238P/Read and 288P/(300163) 2006 VW139were active. By photometric studies, we obtained theAfρvalues and the dust production rates. Finally, the activity of three MBCs were discussed. Our photometric results show that the total dust mass of 238P/Read and 288P/(300163) 2006 VW139obtained in this work are of the same magnitude as the majority of known MBCs.
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