论文标题
具有高轨道倾斜度的主要皮带小行星的光谱和光度法
Optical spectroscopy and photometry of main-belt asteroids with a high orbital inclination
论文作者
论文摘要
我们对51个主要皮带小行星进行了低分辨率的光谱，其中大多数具有高度分支的轨道。它们是从SDSS-MOC 4目录中的D型候选者中选择的。使用夏威夷大学2.2 m望远镜和印度2 m望远镜的天文学与天体物理学间中心，我们确定了38种小行星的光谱类型。其中，八个小行星被归类为D型小行星。对于低轨道倾斜倾斜的小行星，D型小行星的分数为3.0 +/- 1.1，高轨道倾斜倾斜的主皮无类无体小行星为7.3 +/- 2.0。我们的研究结果表明，主带和木星之间的黄道区域内形成了一些D型小行星，然后木星扰动。
We carried out low-resolution optical spectroscopy of 51 main-belt asteroids, most of which have highly-inclined orbits. They are selected from D-type candidates in the SDSS-MOC 4 catalog. Using the University of Hawaii 2.2 m telescope and the Inter-University Centre for Astronomy and Astrophysics 2 m telescope in India, we determined the spectral types of 38 asteroids. Among them, eight asteroids were classified as D-type asteroids. Fractions of D-type asteroids are 3.0+/-1.1 for low orbital inclination main-belt asteroids and 7.3+/-2.0 for high orbital inclination main-belt asteroids. The results of our study indicate that some D-type asteroids were formed within the ecliptic region between the main belt and Jupiter, and were then perturbed by Jupiter.
