期刊
ASTROPHYSICAL JOURNAL LETTERS
卷 829, 期 1, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.3847/2041-8205/829/1/L2
关键词
stars: imaging; stars: individual (TRAPPIST-1, 2MASS J23062928-0502285)
资金
- John Templeton Foundation
- Gemini Observatory [GS-2016A-Q-80]
We have obtained the highest-resolution images available of TRAPPIST-1 using the Gemini-South telescope and our speckle imaging camera. Observing at 692 and 883 nm, we reached the diffraction limit of the telescope providing a best resolution of 27 mas or, at the distance of TRAPPIST-1, a spatial resolution of 0.32 au. Our imaging of the star extends from 0.32 to 14.5 au. We show that to a high confidence level, we can exclude all possible stellar and brown dwarf companions, indicating that TRAPPIST-1 is a single star.
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