Title: First Resolved Scattered-light Images of Four Debris Disks in Scorpius-Centaurus with the Gemini Planet Imager

Journal Article · · The Astronomical Journal (Online)
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In this work, 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 comoving 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 nondetection 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.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
National Aeronautic and Space Administration (NASA); National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA)
Contributing Organization:
G. GPIES Survey
Grant/Contract Number:
AC52-07NA27344
OSTI ID:
1836927
Report Number(s):
LLNL-JRNL-829583; 1045538
Journal Information:
The Astronomical Journal (Online), Journal Name: The Astronomical Journal (Online) Journal Issue: 1 Vol. 159; ISSN 1538-3881
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

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  • Foreman-Mackey, Daniel; Hogg, David W.; Lang, Dustin
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Discovery of a directly imaged disk in scattered light around the Sco-Cen member Wray 15-788 text January 2019
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Discovery of a warm, dusty giant planet around HIP 65426 text January 2017