The JCMT Gould Belt Survey: SCUBA-2 observations of radiative feedback in NGC 1333

Abstract

We present observations of NGC 1333 from SCUBA-2 on the James ClerkMaxwell Telescope (JCMT), observed as a JCMT Gould Belt Survey pilot project during the shared risk campaign when the first of four arrays was installed at each of 450μm and 850. Temperature maps are derived from 450 and 850 μm ratios under the assumption of constant dustopacity spectral index β = 1.8. Temperatures indicate that the dust in the northern (IRAS 6/8) region of NGC 1333 is hot, 20-40 K, due to heating by the B star SVS3, other young stars in the IR/optically visible cluster and embedded protostars. Other luminous protostars are also identified by temperature rises at the 17 arcsec resolution of the ratio maps (0.02 pc assuming a distance of 250 pc for Perseus). Theextensive heating raises the possibility that the radiativefeedback may lead to increased masses for the next generation of stars. © 2012 The Authors, © 2012 RAS.