GG Tauri A 双星系统的近红外偏振测光
太阳与恒星天体物理
2015-09-01 v1
摘要
利用 Subaru 望远镜获得了 GG Tau A 双星系统的高角分辨率近红外偏振强度图像。该图像显示了环双星盘对中心双星光的散射。利用带有 Henyey-Greenstein 函数和 Rayleigh 函数的简单盘模型，大致再现了环双星盘的偏振强度方位角分布，表明盘表面存在微小尘埃颗粒。结合先前对环双星盘的观测，我们的图像表明环双星盘中的间隙结构呈逆时针轨道运行，而盘内物质呈顺时针轨道运行。我们提出这是位于中心双星与环双星盘之间物质投射的阴影。过去 20 年中双星恒星子星的间距和位置角与 a = 33.4 AU 和 e = 0.34 的双星轨道一致。
引用
@article{arxiv.1508.07834,
title = {Near-Infrared Polarimetry of the GG Tauri A Binary System},
author = {Yoichi Itoh and Yumiko Oasa and Tomoyuki Kudo and Nobuhiko Kusakabe and Jun Hashimoto and Lyu Abe and Wolfgang Brandner and Timothy D. Brandt and Joseph C. Carson and Sebastian Egner and Markus Feldt and Carol A. Grady and Olivier Guyon and Yutaka Hayano and Masahiko Hayashi and Saeko S. Hayashi and Thomas Henning and Klaus W. Hodapp and Miki Ishii and Masanori Iye and Markus Janson and Ryo Kandori and Gillian R. Knapp and Masayuki Kuzuhara and Jungmi Kwon and Taro Matsuo and Michael W. McElwain and Shoken Miyama and Jun-Ichi Morino and Amaya Moro-Martin and Tetsuo Nishimura and Tae-Soo Pyo and Eugene Serabyn and Takuya Suenaga and Hiroshi Suto and Ryuji Suzuki and Yasuhiro H. Takahashi and Naruhisa Takato and Hiroshi Terada and Christian Thalmann and Daigo Tomono and Edwin L. Turner and Makoto Watanabe and John Wisniewski and Toru Yamada and Satoshi Mayama and Thayne Currie and Hideki Takami and Tomonori Usuda and Motohide Tamura},
journal= {arXiv preprint arXiv:1508.07834},
year = {2015}
}
备注
10 pages, 3 figures