The Slow-Rotating Nucleus of Comet C/2013 R1 (Lovejoy)

IF 1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Astronomische Nachrichten Pub Date : 2025-03-03 DOI:10.1002/asna.20240053

Federico Manzini, Virginio Oldani, Andrea Farina, Paolo Ochner, Andrea Reguitti, Luigi R. Bedin, Jean Gabriel Bosch, Erik Bryssinck, Roberto Crippa, Stéphan Gaumont-Guay, Carl W. Hergenrother, Joel Nicolas, Ivo Scheggia

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Abstract

The close approach of comet C/2013 R1 (Lovejoy) allowed us to conduct an in-depth study of the morphology of the inner coma. From the measurement of the dust emission structures expanding near the cometary nucleus in November–December 2013, we derived a slow rotation period of $47.8 \pm 1.2$ h. The comet's spin axis is oriented approximately at RA = 332° and Dec = +47°. Numerical models of the inner coma suggest that its morphology was related to the presence of at least four main active sources located at different latitudes on the cometary nucleus, emitting dust of relatively small size and with variable velocity.

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彗星C/2013 R1 （Lovejoy）缓慢旋转的彗核

彗星C/2013 R1 （Lovejoy）的近距离接近使我们能够对内部昏迷的形态进行深入研究。从2013年11 - 12月对彗核附近扩张的尘埃发射结构的测量中，我们得出彗星的慢旋转周期为47.8±1.2 $$ 47.8\pm 1.2 $$ h。彗星的自转轴大约在RA = 332°和Dec = +47°。内彗发的数值模型表明，其形态与位于彗核不同纬度的至少四个主要活动源有关，这些源发射出相对较小且速度可变的尘埃。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Astronomische Nachrichten 地学天文-天文与天体物理

CiteScore

1.80

自引率

11.10%

发文量

审稿时长

4-8 weeks

期刊介绍： Astronomische Nachrichten, founded in 1821 by H. C. Schumacher, is the oldest astronomical journal worldwide still being published. Famous astronomical discoveries and important papers on astronomy and astrophysics published in more than 300 volumes of the journal give an outstanding representation of the progress of astronomical research over the last 180 years. Today, Astronomical Notes/ Astronomische Nachrichten publishes articles in the field of observational and theoretical astrophysics and related topics in solar-system and solar physics. Additional, papers on astronomical instrumentation ground-based and space-based as well as papers about numerical astrophysical techniques and supercomputer modelling are covered. Papers can be completed by short video sequences in the electronic version. Astronomical Notes/ Astronomische Nachrichten also publishes special issues of meeting proceedings.