Near-Infrared Coronagraphy of the GG Tauri A Binary System ∗
Near-Infrared Coronagraphy of the GG Tauri A Binary System ∗
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GG Tauri A 双星系统的近红外日冕仪 *
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
M. Iye
中科院分区：
文献类型：
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作者：
Y. Itoh;M. Tamura;S. Hayashi;Y. Oasa;M. Fukagawa;N. Kaifu;H. Suto;K. Murakawa;Y. Doi;N. Ebizuka;T. Naoi;H. Takami;N. Takato;W. Gaessler;T. Kanzawa;Y. Hayano;Y. Kamata;D. Saint;M. Iye
GG Tau A双星系统的最高角分辨率近红外图像是由安装在斯巴鲁望远镜上的自适应光学日冕成像仪（CIAO）获得的。图像显示，它的环双星盘是光滑的，没有0。1规模结构。表面亮度的不对称性以及间隙也得到了解决。结合先前对恒星位置的测量，我们的数据表明中心双星不太可能有大的偏心率。根据天体测量，这个双双星系统的第五个点源可能是一颗背景星星。
The highest angular resolution near-infrared images of the GG Tau A binary system were obtained with the Coronagraphic Imager with Adaptive Optics (CIAO) mounted on the Subaru Telescope. The images show that its circumbinary disk is smooth and does not have 0. 1 scale structures. Asymmetries in the surface brightness as well as a gap are also resolved. Combined with previous measurements of the stellar positions, our data indicate that the central binary is unlikely to have a large eccentricity. The fifth point source toward this double binary system is probably a background star, based on astrometric measurements.