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首页> 外文期刊>Planetary and space science >Search for satellites near (21) Lutetia using OSIRIS/Rosetta images
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Search for satellites near (21) Lutetia using OSIRIS/Rosetta images

机译：使用OSIRIS / Rosetta图像搜索（21）Lutetia附近的卫星

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摘要

On 2010 July 10 the ESA Rosetta mission flew by the large asteroid (21) Lutetia. One of the scientific goals of the onboard OSIRIS instrument was the search for satellites of the asteroid, with more than 20 images specifically dedicated to this topic. An observational campaign was devised with a selection of filters and exposure times tailored to maximize the possibility of detecting small companions and determining their bound orbits. Data were analyzed with suitable methods to remove cosmic ray hits and known background objects, in order to search for persistent detections of potential interesting flux sources. We found no unambiguous detections of a satellite larger than ～160m inside the entire sphere of gravitational influence. Our search confirmed the absence of bound companions larger than ～30 m inside 20 primary radii. These limits are a factor of ～30 smaller than the values reported so far from large ground-based telescopes using adaptive optics and from the Hubble Space Telescope.
机译：2010年7月10日，欧洲航天局罗塞塔号任务乘大型小行星（21）Lutetia飞行。机载OSIRIS仪器的科学目标之一是搜索小行星的卫星，其中有20多个专门用于该主题的图像。设计了一项观察运动，选择了一系列过滤器和曝光时间，以最大程度地探测小伙伴并确定其约束轨道。使用合适的方法对数据进行了分析，以去除宇宙射线命中和已知的背景物体，以便持续检测潜在的有趣通量源。我们没有发现在整个引力影响范围内对大于〜160m的卫星的明确检测。我们的搜索证实了在20个主半径内不存在大于〜30 m的束缚伴星。这些限制比迄今为止使用自适应光学的大型地面望远镜和哈勃太空望远镜所报告的值小约30倍。

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  • 来源
    《Planetary and space science》 |2012年第1期|p.64-70|共7页
  • 作者

    Ivano Bertini; Walter Sabolo; Pedro J. Gutierrez; Francesco Marzari; Colin Snodgrass; Cecilia Tubiana; Richard Moissl; Maurizio Pajola; Stephen C. Lowry; Cesare Barbieri; Francesca Ferri; Bjoern Davidsson; Holger Sierks;

  • 作者单位

    Centro Interdipartimentale di Studi e Attivita Spaziali (CISAS) 'G. Colombo', Universita di Padova, Via Venezia 15, 35131 Padova, Italy;

    Institute de Astrofisica de Andaluda, CSIC, Glorieta de la Astronomia s, 18008 Granada, Spain;

    Institute de Astrofisica de Andaluda, CSIC, Glorieta de la Astronomia s, 18008 Granada, Spain;

    Dipartimento di Fiska, Universita di Padova, Via Marzolo 8, 35131 Padova, Italy;

    Max-Planck-Institut fuer Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany;

    Max-Planck-Institut fuer Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany;

    Max-Planck-Institut fuer Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany European Space Astronomy Centre, European Space Agency, PO Box 78, 28691 Villanueva de la Canada (Madrid), Spain;

    Centro Interdipartimentale di Studi e Attivita Spaziali (CISAS) 'G. Colombo', Universita di Padova, Via Venezia 15, 35131 Padova, Italy;

    Center for Astrophysics and Planetary Science School of Physical Sciences, University of Kent, INGRAM Building, CT2 7NH Canterbury, United Kingdom;

    Centro Interdipartimentale di Studi e Attivita Spaziali (CISAS) 'G. Colombo', Universita di Padova, Via Venezia 15, 35131 Padova, Italy Dipartimento di Astronomia, Universita di Padova, Vicolo Osservatorio 3, 35122 Padova, Italy;

    Centro Interdipartimentale di Studi e Attivita Spaziali (CISAS) 'G. Colombo', Universita di Padova, Via Venezia 15, 35131 Padova, Italy;

    Department of Physics and Astronomy, Uppsala University, Box 516, 75120 Uppsala, Sweden;

    Max-Planck-Institut fuer Sonnensystemforschung, Max-Planck-Str. 2, 37191 Katlenburg-Lindau, Germany;

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  • 关键词

    minor bodies; asteroid satellites; lutetia; rosetta; OSIRIS;

    机译：小型物体;小行星卫星;lutetia;rosetta;OSIRIS;

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