利用引力微透镜发现类木星/土星行星
天体物理学
2009-11-13 v2
摘要
系外行星的搜寻揭示了行星系统的惊人多样性，但类太阳系行星系统的频率仍未知。引力微透镜行星搜寻方法理论上对包含除水星外所有太阳系行星类体的多行星系统敏感。我们报告了通过微透镜探测到一个多行星系统。我们识别出两个行星，其质量分别约为木星质量的 0.71 倍和 0.27 倍，轨道间距分别约为 2.3 和 4.6 天文单位，它们围绕一颗质量约为 0.50 倍太阳质量的主星运行，距离约为 1.5 千秒差距。该系统类似于我们太阳系的缩放版本，因为行星的质量比、间距比和平衡温度与木星和土星相似。这些行星无法通过其他技术探测到；仅从六次确认的微透镜行星探测中发现它们表明，类太阳系行星系统可能很普遍。
引用
@article{arxiv.0802.1920,
title = {Discovery of a Jupiter/Saturn Analog with Gravitational Microlensing},
author = {B. S. Gaudi and D. P. Bennett and A. Udalski and A. Gould and G. W. Christie and D. Maoz and S. Dong and J. McCormick and M. K. Szymanski and P. J. Tristram and S. Nikolaev and B. Paczynski and M. Kubiak and G. Pietrzynski and I. Soszynski and O. Szewczyk and K. Ulaczyk and L. Wyrzykowski and D. L. DePoy and C. Han and S. Kaspi and C. -U. Lee and F. Mallia and T. Natusch and R. W. Pogge and B. -G. Park and F. Abe and I. A. Bond and C. S. Botzler and A. Fukui and J. B. Hearnshaw and Y. Itow and K. Kamiya and A. V. Korpela and P. M. Kilmartin and W. Lin and K. Masuda and Y. Matsubara and M. Motomura and Y. Muraki and S. Nakamura and T. Okumura and K. Ohnishi and N. J. Rattenbury and T. Sako and To. Saito and S. Sato and L. Skuljan and D. J. Sullivan and T. Sumi and W. L. Sweatman and P. C. M. Yock and M. D. Albrow and A. Allan and J. -P. Beaulieu and M. J. Burgdorf and K. H. Cook and C. Coutures and M. Dominik and S. Dieters and P. Fouque and J. Greenhill and K. Horne and I. Steele and Y. Tsapras and B. Chaboyer and A. Crocker and S. Frank and B. Macintosh},
journal= {arXiv preprint arXiv:0802.1920},
year = {2009}
}
备注
11 pages, 2 figures, published in the 15 February 2008 issue of Science