DoAr 28 过渡盘近红外偏振散射光成像
地球与行星天体物理
2015-09-16 v1
摘要
我们首次展示了 DoAr 28 过渡盘在 H 波段的空间分辨偏振散射光探测。我们的两个历元成像探测到了从有效内工作角 0.10 角秒（13 AU）至 0.50 角秒（65 AU）的散射光盘。此内工作角位于先前研究通过 SED 建模推断的系统间隙位置（15 AU）以内。我们探测到一个候选点源伴星，位于系统西北方向 1.08 角秒处；然而，我们的第二个历元成像强烈表明该天体是一颗背景恒星。我们构建了该系统的蒙特卡洛辐射转移模型网格，最佳拟合模型采用了一个适度倾斜（50 度）、质量为 0.01 太阳质量的盘，该盘从尘埃升华半径至约 8 AU 处存在一个部分耗尽的内部间隙。从我们的偏振强度数据中减去这个最佳拟合的轴对称模型，揭示了盘中存在两个小的不对称性的证据，这可能归因于多种机制。
引用
@article{arxiv.1507.03014,
title = {Near-IR Polarized Scattered Light Imagery of the DoAr 28 Transitional Disk},
author = {Evan A. Rich and John P. Wisniewski and Satoshi Mayama and Timothy D. Brandt and Jun Hashimoto and Tomoyuki Kudo and Nobuhiko Kusakabe and Catherine Espaillat and Lyu Abe and Eiji Akiyama and Wolfgang Brandner and Joseph C. Carson and Thayne Currie and Sebastian Egner and Markus Feldt and Kate Follette and Miwa Goto 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 Chunhua Qi and Eugene Serabyn and Takuya Suenaga and Hiroshi Suto and Ryuji Suzuki and Yasuhiro H. Takahashi and Michihiro Takami and Naruhisa Takato and Hiroshi Terada and Christian Thalmann and Daigo Tomono and Edwin L. Turner and Makoto Watanabe and Toru Yamada and Hideki Takami and Tomonori Usuda and Motohide Tamura},
journal= {arXiv preprint arXiv:1507.03014},
year = {2015}
}
备注
9 pages, 8 figures, 2 tables