12 and 18 micron images of dust surrounding HD 32297

Abstract

We present the first subarcsecond-resolution images at multiple mid-IR wavelengths of the thermally-emitting dust around the A0 star HD 32297. Our observations with T-ReCS at Gemini South reveal a nearly edge-on resolved disk at both 11.7 microns and 18.3 microns that extends ~150 AU in radius. The mid-IR is the third wavelength region in which this disk has been resolved, following coronagraphic observations by others of the source at optical and near-IR wavelengths. The global mid-IR colors and detailed consideration of the radial color-temperature distribution imply that the central part of the disk out to ~80 AU is relatively deficient in dust.

arXiv comment4 pages, 3 figures; accepted for publication in ApJL

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• A Comprehensive Census of Nearby Infrared Excess Stars
• Modeling Self-Subtraction in Angular Differential Imaging: Application to the HD 32297 Debris Disk
• Modeling the HD32297 Debris Disk with Far-IR Herschel Data
• Resolved debris disk emission around eta Tel: a young Solar System or ongoing planet formation?
• Does the Debris Disk around HD 32297 Contain Cometary Grains?
• High-spatial-resolution imaging of thermal emission from debris disks
• Laboratory demonstration of a mid-infrared AGPM vector vortex coronagraph
• New millimeter CO observations of the gas-rich debris disks 49 Cet and HD 32297
• ALMA Detection of Extended Millimeter Halos in the HD 32297 and HD 61005 Debris Disks
• Morphology of the very inclined debris disk around HD 32297
• Multi-Wavelength Modelling of the Beta Leo Debris Disc: 1, 2 or 3 planetesimal populations?
• Spatially resolved spectroscopy of the debris disk HD 32297: Further evidence of small dust grains
• CARMA Millimeter-Wave Aperture Synthesis Imaging of the HD 32297 Debris Disk
• Keck/NIRC2 Imaging of the Warped, Asymmetric Debris Disk around HD 32297
• A Ring of Warm Dust in the HD 32297 Debris Disk
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• The Gemini Planet Imager view of the HD 32297 debris disk
• Polarimetry and flux distribution in the debris disk around HD 32297
• Warm dusty discs: Exploring the A star 24um debris population
• The HOSTS survey: evidence for an extended dust disk and constraints on the presence of giant planets in the Habitable Zone of $\beta$ Leo
• Annular Groove Phase Mask coronagraph in diamond for mid-IR wavelengths: manufacturing assessment and performance analysis
• Detecting Extrasolar Asteroid Belts Through Their Microlensing Signatures