Justin Hom, School of Earth and Space Exploration
Jennifer Patience, School of Earth and Space Exploration
Thomas M. Esposito, University of California, Berkeley
Gaspard Duchene, University of California, Berkeley
Kadin Worthen, School of Earth and Space Exploration
Paul Kalas, University of California, Berkeley
Hannah Jang-Condell, University of Wyoming
Kezman Saboi, School of Earth and Space Exploration
Pauline Arriaga, University of California, Los Angeles
Johan Mazoyer, Jet Propulsion Laboratory
Schuyler Wolff, Sterrewacht Leiden
Maxwell A. Millar-Blanchaer, Jet Propulsion Laboratory
Michael P. Fitzgerald, University of California, Los Angeles
Marshall D. Perrin, Space Telescope Science Institute
Christine H. Chen, Space Telescope Science Institute
Bruce MacIntosh, Stanford University
Brenda C. Matthews, National Research Council Canada
Jason J. Wang, California Institute of Technology
James R. Graham, University of California, Berkeley
Franck Marchis, SETI Institute
S. Mark Ammons, Lawrence Livermore National Laboratory
Vanessa P. Bailey, Jet Propulsion Laboratory
Travis Barman, The University of Arizona
Joanna Bulger, University Hawaii Institute for Astronomy
Jeffrey K. Chilcote, Stanford University
Tara Cotten, University of Georgia
Robert J. De Rosa, Stanford University
René Doyon, Institut de Recherche sur les Exoplanètes
Katherine B. Follette, Amherst College
Steven Goodsell, Gemini Observatory
Alexandra Z. Greenbaum, University of Michigan, Ann Arbor
Pascale Hibon, European Southern Observatory Santiago
Kimberly Ward-Duong, Amherst CollegeFollow
et al, Various Institutions

Document Type


Publication Date


Publication Title

Astronomical Journal


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.










© 2020. The American Astronomical Society


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