河鼓二表面成像
天体物理学
2009-11-13 v2
摘要
对邻近恒星表面进行空间分辨有望推进我们对恒星物理学的认知。利用光学长基线干涉测量，我们在此展示了快速旋转的热星河鼓二（Altair）的近红外图像，其分辨率<1毫角秒。该图像清楚地揭示了重力昏暗对高度扭曲的恒星光球的强烈影响。均匀旋转恒星的标准模型无法解释我们的结果，这需要差异旋转、替代的重力昏暗定律，或两者兼有。
引用
@article{arxiv.0706.0867,
title = {Imaging the Surface of Altair},
author = {John D. Monnier and M. Zhao and E. Pedretti and N. Thureau and M. Ireland and P. Muirhead and J. -P. Berger and R. Millan-Gabet and G. Van Belle and T. ten Brummelaar and H. McAlister and S. Ridgway and N. Turner and L. Sturmann and J. Sturmann and D. Berger},
journal= {arXiv preprint arXiv:0706.0867},
year = {2009}
}
评论
24 pages. to appear in Science. includes Report and Supplemental Online Materials. Accompanying animation can be found at http://www.astro.lsa.umich.edu/~monnier/Altair2007/altair2007.html