Dust continuum spectra for NE and SW galaxies in BR1202-0725. Flux densities from 100 to 340 GHz are from the mm/submm interferometer data, as these are the only observations that spatially separate the NW and SE galaxies in the cool dust continuum: 101, 142, and 222 GHz from this paper, 340 GHz from Wagg et al. (2012). Because the mm/submm dust continuum fluxes of the two galaxies are nearly the same, we plot the NW galaxy fluxes (lower curve) divided by five, for better readbility. Data points at 350, 160, 70, and 24 μm are from Benford et al. (1999), Leipski et al. (2010), and Hines et al. (2006). The other curves show model dust components for the SE galaxy: a starburst-heated 50 K component and two quasar-heated warm (130 K) and hot (410 K) dust components. The uppermost dotted curve is the total emission.