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.

4 pages, 3 figures; accepted for publication in ApJL

References in corpus (2)

• Mid-infrared resolution of a 3 AU-radius debris disk around Zeta Leporis
• High-Resolution Imaging of the Dust Disk around 49 Ceti

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• A Ring of Warm Dust in the HD 32297 Debris Disk
• The Gemini Planet Imager view of the HD 32297 debris disk
• 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