期刊
ASTRONOMICAL JOURNAL
卷 153, 期 1, 页码 -出版社
IOP Publishing Ltd
DOI: 10.3847/1538-3881/153/1/7
关键词
binaries: close; planets and satellites: formation; protoplanetary disks; stars: pre-main sequence
资金
- U.S. National Science Foundation [1009203]
- [15H02063]
- STFC [ST/L000636/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000636/1] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [15H02063] Funding Source: KAKEN
By performing non-masked polarization imaging with Subaru/HiCIAO, polarized scattered light from the inner region of the disk around the GG Tau A system was successfully detected in the H band, with a spatial resolution of approximately 0 07, revealing the complicated inner disk structures around this young binary. This paper reports the observation of an arc-like structure to the north of GG Tau Ab, and part of a circumstellar structure that is noticeable around GG Tau Aa, extending to a distance of approximately 28 au from the primary star. The speckle noise around GG Tau Ab constrains its disk radius to < 13 au. Based on the size of the circumbinary ring and the circumstellar disk around GG Tau Aa, the semimajor axis of the binary's orbit is likely to be 62 au. A comparison of the present observations with previous Atacama Large Millimeter Array and near-infrared H-2 emission observations suggests that the north arc could be part of a large streamer flowing from the circumbinary ring to sustain the circumstellar disks. According to the previous studies, the circumstellar disk around GG Tau Aa has enough mass and can sustain itself for a duration sufficient for planet formation; thus, our study indicates that planets can form within close (separation. 100 au) young binary systems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据