HD 106906 行星系统中非对称碎屑盘的直接成像
地球与行星天体物理
2015-10-12 v1
摘要
我们展示了利用 Gemini/GPI 在红外波段和 HST/ACS 在光学波段对 HD 106906 碎屑盘的首次散射光探测。HD 106906 是 Sco-Cen 星协中一颗年龄为 13 Myr 的 F5V 型恒星，伴有一颗先前探测到的行星质量候选体 HD 106906b，其在投影上距主星 650 AU。我们的观测揭示了一个近边缘朝向的碎屑盘，其具有半径约 50 AU 的中央清空区，外缘延伸大于 500 AU。HST 数据显示外区域高度不对称，类似于在 HD 15115 碎屑盘中所见的“针状”形态。该行星候选体的方位角偏离主星碎屑盘的位置角约 21°，强烈暗示其与系统非共面。我们推测 HD 106906b 可能动态地参与了主星盘的扰动，并探究是否存在围绕行星的尘埃盘或云的证据，该尘埃盘或云可能是原初的或从主星捕获的。我们表明，HD 106906b 现有的光学性质和近红外颜色均微弱地与此可能性一致，这激励未来工作去检验行星周围尘埃的观测特征。
引用
@article{arxiv.1510.02747,
title = {Direct imaging of an asymmetric debris disk in the HD 106906 planetary system},
author = {Paul G. Kalas and Abhijith Rajan and Jason J. Wang and Maxwell A. Millar-Blanchaer and Gaspard Duchene and Christine Chen and Michael P. Fitzgerald and Ruobing Dong and James R. Graham and Jennifer Patience and Bruce Macintosh and Ruth Murray-Clay and Brenda Matthews and Julien Rameau and Christian Marois and Jeffrey Chilcote and Robert J. De Rosa and René Doyon and Zachary H. Draper and Samantha Lawler and S. Mark Ammons and Pauline Arriaga and Joanna Bulger and Tara Cotten and Katherine B. Follette and Stephen Goodsell and Alexandra Greenbaum and Pascale Hibon and Sasha Hinkley and Li-Wei Hung and Patrick Ingraham and Quinn Konapacky and David Lafreniere and James E. Larkin and Douglas Long and Jérôme Maire and Franck Marchis and Stan Metchev and Katie M. Morzinski and Eric L. Nielsen and Rebecca Oppenheimer and Marshall D. Perrin and Laurent Pueyo and Fredrik T. Rantakyrö and Jean-Baptiste Ruffio and Leslie Saddlemyer and Dmitry Savransky and Adam C. Schneider and Anand Sivaramakrishnan and Rémi Soummer and Inseok Song and Sandrine Thomas and Gautam Vasisht and Kimberly Ward-Duong and Sloane J. Wiktorowicz and Schuyler G. Wolff},
journal= {arXiv preprint arXiv:1510.02747},
year = {2015}
}
备注
Accepted for publication in the Astrophysical Journal; 15 pages, 7 figures