Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Speckle Imaging Excludes Low-Mass Companions Orbiting the Exoplanet Host
  Star TRAPPIST-1   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.

25
The categories of this paper are: patt-sol
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
36
The categories of this paper are: cmp-lg
29
The categories of this paper are: funct-an
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th