Near-Infrared Polarimetry of the GG Tauri A Binary System

Abstract

A high angular resolution near-infrared polarized-intensity image of the GG Tau A binary system was obtained with the Subaru Telescope. The image shows the circumbinary disk scattering the light from the central binary. The azimuthal profile of the polarized intensity of the circumbinary disk is roughly reproduced by a simple disk model with the Henyey-Greenstein function and the Rayleigh function, indicating small dust grains at the surface of the disk. Combined with a previous observation of the circumbinary disk, our image indicates that the gap structure in the circumbinary disk orbits anti-clockwise, while material in the disk orbit clockwise. We propose a shadow of material located between the central binary and the circumbinary disk. The separations and position angles of the stellar components of the binary in the past 20 years are consistent with the binary orbit with a = 33.4 AU and e = 0.34.

10 pages, 3 figures

References in corpus (2)

• The unusual pre-main-sequence star V718 Per (HMW 15)
• Near-Infrared Coronagraphic Observations of the T Tauri Binary System UY Aur

Cited by in corpus (14)

• Evolution of protoplanetary disks from their taxonomy in scattered light: spirals, rings, cavities, and shadows
• An inner warp in the DoAr 44 T Tauri transition disk
• Spiral Arms in Disks: Planets or Gravitational Instability?
• The SEEDS High Contrast Imaging Survey of Exoplanets around Young Stellar Objects
• Gap, shadows, spirals, streamers: SPHERE observations of binary-disk interactions in GG Tau A
• Effect of dust size and structure on scattered light images of protoplanetary discs
• On The Secular Evolution of GG Tau A Circumbinary Disc: A Msialigned Disc Scenario
• Mapping CO Gas in the GG Tauri A Triple System with 50 AU Spatial Resolution
• Near-Infrared Imaging Polarimetry of Inner Region of GG Tau A Disk
• Constraints on the (re-)orientation of star-disk systems through infall
• Mapping of shadows cast on a protoplanetary disk by a close binary system
• External or internal companion exciting the spiral arms in CQ Tau?
• An extended scattered light disk around AT Pyx -- Possible planet formation in a cometary globule
• Planet-forming disks and their environment across regions and time from the full NIR census