  We present the first detection and mapping of the HD 32297 debris disk at 1.3
mm with the Combined Array for Research in Millimeter-wave Astronomy (CARMA).
With a sub-arcsecond beam, this detection represents the highest angular
resolution (sub)mm debris disk observation made to date. Our model fits to the
spectral energy distribution from the CARMA flux and new Spitzer MIPS
photometry support the earlier suggestion that at least two, possibly three,
distinct grain populations are traced by the current data. The observed
millimeter map shows an asymmetry between the northeast and southwest disk
lobes, suggesting large grains may be trapped in resonance with an unseen
exoplanet. Alternatively, the observed morphology could result from the recent
breakup of a massive planetesimal. A similar-scale asymmetry is also observed
in scattered light but not in the mid-infrared. This contrast between asymmetry
at short and long wavelengths and symmetry at intermediate wavelengths is in
qualitative agreement with predictions of resonant debris disk models. With
resolved observations in several bands spanning over three decades in
wavelength, HD 32297 provides a unique testbed for theories of grain and
planetary dynamics, and could potentially provide strong multi-wavelength
evidence for an exoplanetary system.
