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Photometric analysis for the spin and shape parameters of the C-type main-belt asteroids (171) Ophelia and (360) Carlova

文献类型：期刊论文

作者Wang XB(王晓彬)1,2; Muinonen, Karri3,4; Wang YB(王夷博)1,5; Behrend, Raoul6; Goncalves, Rui7; Oey, Julian8; Antonini, Pierre9; Demeautis, Christophe10; Manzini, Federico11; Damerdji, Jacques12
刊名Astronomy and Astrophysics
出版日期2015-09-01
卷号581
ISSN号0004-6361
产权排序第一完成单位
英文摘要Aims. Two C-type main-belt asteroids (171) Ophelia and (360) Carlova are studied for their spin parameters and shapes in the present paper. Although it was suspected that Ophelia was a binary system owing to the eclipse features in the light curve obtained in 1977, no direct evidence has been obtained to confirm the binarity. To verify the previous findings, the spin parameters and shape of Ophelia are derived by analyzing the photometric data. To understand the dispersion in the previous determination of Carlova's spin parameters, new observational data and existing photometric data are reanalyzed to find a homogenous solution for its spin parameters and shape. Methods. The spin parameters and shapes of two asteroids were determined from photometric data using the convex inversion technique. The simplified virtual-observation Markov chain Monte Carlo method was applied to estimate the uncertainties of the spin parameters and to understand the divergence of derived shapes. Results. A pair of possible poles for Ophelia are derived, the spin periods corresponding to the two poles are nearly the same. The convex shape of Ophelia shows binary characteristics. For Carlova, a unique pole solution and its convex shape are ascertained together with the occultation observations. The convex shape of Carlova shows that it is a rough ellipsoid.
WOS标题词Science & Technology ; Physical Sciences
学科主题Astronomy & Astrophysics
类目[WOS]Astronomy & Astrophysics
研究领域[WOS]Astronomy & Astrophysics
关键词[WOS]LIGHTCURVE INVERSION ; ROTATIONAL PROPERTIES ; OPTIMIZATION METHODS ; MODELS
收录类别SCI ; EI
原文出处http://www.aanda.org/articles/aa/abs/2015/09/aa26523-15/aa26523-15.html
语种英语
WOS记录号WOS:000361803900055
源URL[http://ir.ynao.ac.cn/handle/114a53/6807]  
专题云南天文台_系外行星研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, PO Box 110, 650011 Kunming, PR China
2.Key laboratory for the structure and evolution of celestial objects, Chinese Academy of Sciences, 650011 Kunming, PR China
3.Department of Physics, PO Box 64, 00014 University of Helsinki, Finland
4.Finnish Geodetic Institute, PO Box 15, 02431 Masala, Finland
5.University of Chinese Academy of Sciences, 100049 Beijing, PR China
6.Genève Observatory, 1290 Sauverny, Switzerland
7.Linhaceira Observatorie, Instituto Politecnico de Tomar, 2300-313 Tomar, Portugal
8.Kingsgrove observatory, 23 Monaro Ave., Kingsgrove, NSW 2208, Australia
9.Observatoire de Bédoin, 47 rue Guillaume Puy, 84000 Avignon, France
10.Observatoire du Tim, Chemin La Chapelle, 04700 Puimichel, France
推荐引用方式
GB/T 7714		 Wang XB,Muinonen, Karri,Wang YB,et al. Photometric analysis for the spin and shape parameters of the C-type main-belt asteroids (171) Ophelia and (360) Carlova[J]. Astronomy and Astrophysics,2015,581.
APA Wang XB.,Muinonen, Karri.,Wang YB.,Behrend, Raoul.,Goncalves, Rui.,...&Ganand, Giller.(2015).Photometric analysis for the spin and shape parameters of the C-type main-belt asteroids (171) Ophelia and (360) Carlova.Astronomy and Astrophysics,581.
MLA Wang XB,et al."Photometric analysis for the spin and shape parameters of the C-type main-belt asteroids (171) Ophelia and (360) Carlova".Astronomy and Astrophysics 581(2015).

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来源：云南天文台

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