The Meudon Multicolor Survey (2MS) of Centaurs and Trans-Neptunian Objects: From Visible to Infrared Colors
The Meudon Multicolor Survey (2MS) of Centaurs and Trans-Neptunian Objects: From Visible to Infrared Colors
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半人马座和海王星外天体的默东多色巡天 (2MS)：从可见光到红外颜色
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发表时间：
2007
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通讯作者：
C. Veillet
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作者：
A. Doressoundiram;N. Peixinho;A. Moullet;S. Fornasier;M. Barucci;J. Beuzit;C. Veillet
我们介绍了默东多色调查的最新结果。这次调查的目的是描述半人马座和海王星外天体的颜色特性和趋势。我们报道了用CFHT-IR在3.6 m加拿大-法国-夏威夷望远镜（夏威夷）获得的天体的IJHK光度，用INGRID在4.2 m威廉·赫舍尔望远镜（拉帕尔马）获得的JHK光度，以及用OIG在3.6 m国家伽利略望远镜（拉帕尔马）获得的BVRI光度。我们展示了38个物体的可见近红外颜色。这些数据要么是同时获得的，要么是新的近红外光度测量与之前发表的可见光测量相关联，使用两组测量的I等。这个大样本允许扩展表征这些原始物体在B （0.4 μm）到K （2.2 μm）波长范围内的颜色特性。我们对所有可用的红外颜色进行了详细的统计分析，以寻找重要的趋势。关于可见光和近红外波段颜色相关性最相关的结论是，基本上，JHK波段单独没有显示相关性的证据，无论是它们之间还是与BVRIJ波段。只有半人马座的可见颜色和H - k之间表现出反相关性，每个动力族的颜色比较非常相似。
We present the latest results of the Meudon Multicolor Survey. This survey is aimed at characterizing the color properties and trends of Centaurs and trans-Neptunian objects. We report IJHK photometry of objects obtained with CFHT-IR at the 3.6 m Canada-France-Hawaii Telescope (Hawaii), JHK photometry with INGRID at the 4.2 m William Hershel Telescope (La Palma), and BVRI photometry with OIG at the 3.6 m Telescopio Nazionale Galileo Telescope (La Palma). We present visible—near-IR colors for 38 objects. Either these were acquired simultaneously, or the new near-IR photometry was tied to previously published visible measurements using the I magnitude measured in both sets. This large sample allows an extended characterization of the color properties of these primitive objects over the B (0.4 μm) to K (2.2 μm) wavelength range. We performed a detailed statistical analysis of all available IR colors in order to search for significant trends. The most relevant conclusion about visible and near-IR color-color correlations is that, basically, JHK bands alone do not show evidence of correlations, either between them or with BVRIJ bands. Only Centaurs show an anticorrelation between visible colors and H - K. Colors within each dynamical family compare very similarly.