彗星 103P/Hartley 2 活动性持续下降
地球与行星天体物理
2025-08-29 v1
摘要
我们报告了对 2023 年彗星 103P/Hartley 2 视程观测的结果。本次观测于 2023 年 8 月至 12 月间进行，采用由 Unistellar 和 Association Française d'Astronomie 协调的全球公民天文学家网络数据。通过与 SETI 研究所合作的 eVscope 自动化管线以及 AstroLab Stellar 的光度测绘，获得了 photometric 数据。我们发现，该彗星的峰值最亮度为 ，这延续了自 1991 年以来的长期衰减趋势。衰减率为每一次近日点最小亮度增加 星等，相当于每次近日点约 42% 的亮度减弱。这一趋势表明，该彗星自 1991 年以来活跃面积约减小了一个数量级，并可能表明 Hartley 2 已不再符合超活跃( hyperactive)的定义。这种衰减符合逐渐挥发性物质耗竭而非轨道效应的解释。这些结果为理解木星家族彗星的演化过程提供了新的见解。
引用
@article{arxiv.2508.20215,
title = {The Ongoing Decline in Activity of Comet 103P/Hartley 2},
author = {Ariel Graykowski and Guillaume Langin and David Chiron and Bruno Guillet and Franck Marchis and Nicolas Biver and Gérard Arlic and Bernard Baudouin and Etienne Bertrand and Randall Blake and Cyrille Bosquet and John K. Bradley and Isabelle Brocard and Christophe Cac and Alain Cagna and Nicolas Castel and Eric Chariot and Olivier Clerget and Tom Coarrase and Lucas Cogniaux and Julien Collot and Christophe Coté and Michel Deconinck and Jean-Paul Desgrees and Josselin Desmars and Giuseppe Di Tommaso and José Donas and William Drapeaud and Todd Forrester and Florent Frémont and Keiichi Fukui and Paul Garde and Jérôme Gaudilliere and Pascal Gaudin and Alexis Giacomoni and David Gineste and Patrice Girard and Jean Claude Gomez and Chuck Goodman and Gerard-Philippe Grandjean and Philippe Guiglion and David Havell and Patrick Huth and Kachi Iwai and Marc-Etienne Julien and Rachel Knight and Ryuichi Kukita and Petri Kuossari and Jean-Michel Ladruze and Anis Ben Lassoued and Cédric Latgé and Jean-Marie Laugier and Matthieu Lauvernier and Patrice Le Guen and Jean-Charles Le Tarnec and Didier Lefoulon and Liouba Leroux and Niniane Leroux and Arnaud Leroy and Chelsey Logan and Yohann Lorand and Elisabeth Maris and Jean-Pierre Masini and Nicola Meneghelli and Laurent Millart and Eric Miny and Mike Mitchell and Baptiste Montoya and Fabrice Mortecrette and Anouchka Nardi and Antoine Ngo and Denis Nicolas and Raphael Nicollerat and Takaya Okada and Wataru Ono and George Patatoukas and Jacqueline Payet-Ayrault and Patrick Picard and Claude Porchel and Kanai Potts and Michel Quienen and Martial Relier and Fabien Richardot and Darren Rivett and Matthew Ryno and Fadi Saibi and Sophie Saibi and Christian Sartini and Hiromichi Sasaki and Philippe Seibert and Masao Shimizu and Lucas Sifoni and Georges Simard and Petri Tikkanen and Ian Transom and Bernard Tregon and Frank Tyrlik and Laurent Vadrot and Michel Veuillet and Christian Voirol and Stefan Will and Corine Yahia and Phil Yehle and Neil Yoblonsky and Wai-Chun Yue},
journal= {arXiv preprint arXiv:2508.20215},
year = {2025}
}