Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First Resolved Scattered-Light Images of Four Debris Disks in
  Scorpius-Centaurus with the Gemini Planet Imager   We present the first spatially resolved scattered-light images of four debris
disks around members of the Scorpius-Centaurus (Sco-Cen) OB Association with
high-contrast imaging and polarimetry using the Gemini Planet Imager (GPI). All
four disks are resolved for the first time in polarized light and one disk is
also detected in total intensity. The three disks imaged around HD 111161, HD
143675, and HD 145560 are symmetric in both morphology and brightness
distribution. The three systems span a range of inclinations and radial
extents. The disk imaged around HD 98363 shows indications of asymmetries in
morphology and brightness distribution, with some structural similarities to
the HD 106906 planet-disk system. Uniquely, HD 98363 has a wide co-moving
stellar companion Wray 15-788 with a recently resolved disk with very different
morphological properties. HD 98363 A/B is the first binary debris disk system
with two spatially resolved disks. All four targets have been observed with
ALMA, and their continuum fluxes range from one non-detection to one of the
brightest disks in the region. With the new results, a total of 15 A/F-stars in
Sco-Cen have resolved scattered light debris disks, and approximately half of
these systems exhibit some form of asymmetry. Combining the GPI disk structure
results with information from the literature on millimeter fluxes and imaged
planets reveals a diversity of disk properties in this young population.
Overall, the four newly resolved disks contribute to the census of disk
structures measured around A/F-stars at this important stage in the development
of planetary systems.

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The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: hep-th
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The categories of this paper are: ao-sci
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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat
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The categories of this paper are: cmp-lg
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The categories of this paper are: nlin
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The categories of this paper are: hep-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: math-ph
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The categories of this paper are: math
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The categories of this paper are: cond-mat
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The categories of this paper are: physics
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The categories of this paper are: mtrl-th
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The categories of this paper are: hep-ex