DIRECT IMAGING OF FINE STRUCTURES IN GIANT PLANET-FORMING REGIONS OF THE PROTOPLANETARY DISK AROUND AB AURIGAE
DIRECT IMAGING OF FINE STRUCTURES IN GIANT PLANET-FORMING REGIONS OF THE PROTOPLANETARY DISK AROUND AB AURIGAE
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DOI：
10.1088/2041-8205/729/2/l17
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发表时间：
2011-02
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通讯作者：
J. Hashimoto;Motohide Tamura;T. Muto;T. Kudo;M. Fukagawa;T. Fukue;M. Goto;C. Grady;T. Henning;K. Hodapp;M. Honda;S. Inutsuka;E. Kokubo;G. R. Knapp;M. McElwain;M. Momose;N. Ohashi;Y. Okamoto;M. Takami;Edwin L. Turner;Edwin L. Turner;J. Wisniewski;M. Janson;L. Abe;Wolfgang Brandner;J. Carson;J. Carson;S. Egner;M. Feldt;T. Golota;O. Guyon;Y. Hayano;M. Hayashi;S. Hayashi;M. Ishii;R. Kandori;N. Kusakabe;T. Matsuo;S. Mayama;S. Miyama;J. Morino;A. Moro-Mart́in;A. Moro-Mart́in;T. Nishimura;T. Pyo;H. Suto;R. Suzuki;N. Takato;Hiroshi Terada;C. Thalmann;D. Tomono;Makoto Watanabe;Toru Yamada;H. Takami;T. Usuda
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作者：
J. Hashimoto;Motohide Tamura;T. Muto;T. Kudo;M. Fukagawa;T. Fukue;M. Goto;C. Grady;T. Henning;K. Hodapp;M. Honda;S. Inutsuka;E. Kokubo;G. R. Knapp;M. McElwain;M. Momose;N. Ohashi;Y. Okamoto;M. Takami;Edwin L. Turner;Edwin L. Turner;J. Wisniewski;M. Janson;L. Abe;Wolfgang Brandner;J. Carson;J. Carson;S. Egner;M. Feldt;T. Golota;O. Guyon;Y. Hayano;M. Hayashi;S. Hayashi;M. Ishii;R. Kandori;N. Kusakabe;T. Matsuo;S. Mayama;S. Miyama;J. Morino;A. Moro-Mart́in;A. Moro-Mart́in;T. Nishimura;T. Pyo;H. Suto;R. Suzuki;N. Takato;Hiroshi Terada;C. Thalmann;D. Tomono;Makoto Watanabe;Toru Yamada;H. Takami;T. Usuda
报道了利用高对比度双光束偏振仪HiCIAO获得的Herbig Ae星星AB Aur星周盘在径向距离22 Au（0.″15）到554 Au（3.″85）的高分辨率1.6 μm偏振强度（PI）图像。我们揭示了复杂的和不对称的结构，在内部部分（140 Au）的磁盘，同时确认以前报道的外部（r Au）的螺旋结构。我们已经成像了一个双环结构，在40和100 Au和环状间隙之间的两个。我们发现两个环之间的倾斜角有很大的差异，这可能表明AB Aur的圆盘是弯曲的。此外，我们发现了7个下降（典型的大小是1045 Au或更少）内的两个环，以及三个突出的PI峰在1040 Au。观测到的结构，包括一个凹凸不平的双环，环形间隙，并在最里面的区域翘曲盘，提供了必要的信息，了解最近发现的宽轨道（r > 20 Au）行星的形成机制。
We report high-resolution 1.6 μm polarized intensity (PI) images of the circumstellar disk around the Herbig Ae star AB Aur at a radial distance of 22 AU (0.″15) up to 554 AU (3.″85), which have been obtained by the high-contrast instrument HiCIAO with the dual-beam polarimetry. We revealed complicated and asymmetrical structures in the inner part (≲140 AU) of the disk while confirming the previously reported outer (r ≳ 200 AU) spiral structure. We have imaged a double ring structure at ∼40 and ∼100 AU and a ring-like gap between the two. We found a significant discrepancy of inclination angles between two rings, which may indicate that the disk of AB Aur is warped. Furthermore, we found seven dips (the typical size is ∼45 AU or less) within two rings, as well as three prominent PI peaks at ∼40 AU. The observed structures, including a bumpy double ring, a ring-like gap, and a warped disk in the innermost regions, provide essential information for understanding the formation mechanism of recently detected wide-orbit (r > 20 AU) planets.