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The fits file may be located at ftp.astro.umd.edu. The files (debris.fits and debris.caption) are located in pub/lgm.
This is a simulation of a modestly bright debris disk at a distance of 12 pc around a sun-like star. The total emission is 10 mJy at this observing frequency, 345 GHz. The disk inner radius is 2 AU; the outer radius is 100 AU. The mass of the disk corresponds to roughly 0.4 lunar masses of dust, or 0.5 Earth masses of gas plus dust assuming a gas-to-dust ratio of 100. The interesting feature about this image for ACA simulation is the weak extended emission carrying the signatures of planetary influence on the dust and gas.
Other details of the model are summarized below.
Disk inner and outer radius (in AU) = 2, 100
Dust Temp at 1 au (in Kelvins) = 350
Dust temp power-law index, q = 0.45
Lower limit to allowed temp in disk = 20 K
Surface density power-law index = 1.3
Inclination angle of disk (0=face-on) = 45 deg
Distance to source (in pc) = 12
Position angle of disk (0 = vertical= major axis along dec axis) =
90
Freq of observation in GHz = 345
Location and nature of disk surface features:
1.0 7. 2.0 : dark ring of amp zz, at radius xx AU, width yy AU
2.0 16. 4.0 : dark ring of amp zz, at radius xx AU, width yy AU
1.5 40. 5.0 45. : planet debris of amp zz, at radius xx AU, width yy
AU, PA
3.0 60. 9.0 155. : planet debris of amp zz, at radius xx AU, width
yy AU, PA
Bryan's preliminary analysis of the MEM images may be found
here.