First Resolved Scattered-Light Images of Four Debris Disks in Scorpius-Centaurus with the Gemini Planet Imager
Creators: name: Hom, Justin
name: Patience, Jennifer
name: Esposito, Thomas M.
name: Duchêne, Gaspard
name: Worthen, Kadin
name: Kalas, Paul
name: Jang-Condell, Hannah
name: Saboi, Kezman
name: Arriaga, Pauline
name: Mazoyer, Johan
name: Wolff, Schuyler
name: Millar-Blanchaer, Maxwell A.
name: Fitzgerald, Michael P.
name: Perrin, Marshall D.
name: Chen, Christine H.
name: Macintosh, Bruce
name: Matthews, Brenda C.
name: Wang, Jason J.
name: Graham, James R.
name: Marchis, Franck
name: Ammons, S. Mark
name: Bailey, Vanessa P.
name: Barman, Travis
name: Bulger, Joanna
name: Chilcote, Jeffrey K.
name: Cotten, Tara
name: De Rosa, Robert J.
name: Doyon, René
name: Follette, Katherine B.
name: Goodsell, Steven
name: Greenbaum, Alexandra Z.
name: Hibon, Pascale
name: Ingraham, Patrick
name: Konopacky, Quinn
name: Larkin, James E.
name: Maire, Jerome
name: Marley, Mark S.
name: Marois, Christian
name: Matthews, Elisabeth
name: Metchev, Stanimir
name: Nielsen, Eric L.
name: Oppenheimer, Rebecca
name: Palmer, David
name: Poyneer, Lisa A.
name: Pueyo, Laurent
name: Rajan, Abhijith
name: Rameau, Julien
name: Rantakyrö, Fredrik T.
name: Ren, Bin
name: Savransky, Dmitry
name: Schneider, Adam
name: Sivaramakrishnan, Anand
name: Song, Inseok
name: Soummer, Rémi
name: Tallis, Melisa
name: Thomas, Sandrine
name: Wallace, J. Kent
name: Ward-Duong, Kimberly
name: Wiktorowicz, Sloane J.
name: Zuckerman, Ben
Publisher: name: arXiv
Year: 2019
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: 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.
description: 20 pages, 9 figures