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

Abstract

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.

20 pages, 9 figures

References in corpus (18)

• The Gemini Planet Imager: First Light
• Monte Carlo radiative transfer in protoplanetary disks
• Debris Disk Evolution Around A Stars
• Discovery of a warm, dusty giant planet around HIP65426
• Polarimetry with the Gemini Planet Imager: Methods, Performance at First Light, and the Circumstellar Ring around HR 4796A
• Debris Disks in the Scorpius-Centaurus OB Association Resolved by ALMA
• Exocometary gas structure, origin and physical properties around $\beta$ Pictoris through ALMA CO multi-transition observations
• Molecular gas in debris disks around young A-type stars
• Misaligned Protoplanetary Disks in a Young Binary System
• Gemini Planet Imager Observational Calibrations I: Overview of the GPI Data Reduction Pipeline
• Gemini Planet Imager Observational Calibrations VIII: Characterization and Role of Satellite Spots
• The SHARDDS survey: first resolved image of the HD114082 debris disk in Lower Centaurus Crux with SPHERE
• ALMA 1.3 Millimeter Map of the HD 95086 System
• The First Scattered Light Image of the Debris Disk around the Sco-Cen target HD 129590
• Probing the Terrestrial Regions of Planetary Systems: Warm Debris Disks with Emission Features
• Automated data processing architecture for the Gemini Planet Imager Exoplanet Survey
• Imaging an 80 AU Radius Dust Ring Around the F5V Star HD 157587
• Gemini Planet Imager Observational Calibrations XIV: Polarimetric Contrasts and New Data Reduction Techniques

Cited by in corpus (11)

• Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1
• Solar System Physics for Exoplanet Research
• Survey of planetesimal belts with ALMA: gas detected around the Sun-like star HD 129590
• A Recipe for Unbiased Background Modeling in Deep Wide-Field Astronomical Images
• The ALMA survey to Resolve exoKuiper belt Substructures (ARKS) V: Comparison between scattered light and thermal emission
• Narrow belt of debris around the Sco-Cen star HD 141011
• The first scattered light images of HD 112810, a faint debris disk in the Sco-Cen association
• Three new late-type stellar companions to very dusty WISE debris disks identified with VLT/SPHERE imaging
• The Disks In Scorpius-Centaurus Survey (DISCS) I: Four Newly-Resolved Debris Disks in Polarized Intensity Light
• Discovery of carbon monoxide emission from five debris disks around young A-type stars
• CoronaGraph Instrument Reference stars for Exoplanets (CorGI-REx) I. Preliminary Vetting and Implications for the Roman Coronagraph and Habitable Worlds Observatory