主带彗星176P/ LINEAR、238P/ Read和288P/（300163）2006 VW的活动研究

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

作者信息

Shi Jianchun, Ma Yuehua, Liang He, Xu Ruiqi

机构信息

Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing, 210034, China.

CAS Key Laboratory of Planetary Sciences, Chinese Academy of Sciences, Nanjing, 210034, China.

出版信息

Sci Rep. 2019 Apr 2;9(1):5492. doi: 10.1038/s41598-019-41880-0.

DOI:10.1038/s41598-019-41880-0

PMID:30940896

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6445086/

Abstract

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 VW, 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 VW were active. By photometric studies, we obtained the Afρ values 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 VW obtained in this work are of the same magnitude as the majority of known MBCs.

摘要

作为一类新型彗星，主带彗星（MBCs）近年来受到了越来越多的关注。为了研究三颗主带彗星176P/LINEAR、238P/Read和288P/（300163）2006 VW的活动情况和物理特性，我们于协调世界时2016年11月18日至19日，利用台湾鹿林天文台的1米光学望远镜对这三颗主带彗星进行了宽带电荷耦合器件测光。通过将彗星表面亮度分布与恒星表面亮度分布进行比较，以及将彗星绝对星等与无活动彗核的预期星等进行比较，我们发现176P/LINEAR不活跃，而238P/Read和288P/（300163）2006 VW活跃。通过测光研究，我们获得了Afρ值和尘埃产生率。最后，对三颗主带彗星的活动情况进行了讨论。我们的测光结果表明，在这项工作中获得的238P/Read和288P/（300163）2006 VW的总尘埃质量与大多数已知主带彗星的量级相同。