3-color image (H-band is blue, K-band is green, L-band is red) of a protostar viewed at several inclinations and with three different grain properties. From left to right, the inclinations are i=90 (edge-on), i=73, i=53, i=26. From top to bottom, the dust grain properties are MRN, KMH, Rv=5.5. See here for an explanation of grain properties. See here for a description of the protostar model. See here for a reminder of what the wavelengths are.
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