Protostars and Planets VI, Heidelberg, July 15-20, 2013
Mapping dust in Orion protostars: from Herschel to APEX
Stanke, Thomas (ESO)
Stutz, Amelia (MPIA Heidelberg)
Megeath, Thomas (U. Toledo)
HOPS, team (many)
HOPS (Herschel Orion Protostar Survey) is a 70 and 160mum Herschel PACS survey towards a sample of Spitzer identified protostar candidates in the Orion A and B giant molecular clouds. In this poster we give an overview of our efforts to obtain longer wavelength dust continuum maps, using the Laboca and Saboca cameras (870 and 350mum, respectively) at the APEX telescope, which provide maps at spatial resolutions well matched to the Herschel PACS data. The Laboca maps cover the entire field surveyed also by Herschel, providing a dust continuum measurement for all protostars observed by Herschel. The Saboca maps are restricted to smaller maps, mainly targeting PACS-bright protostar candidates, new protostar candidates not seen previously by Spitzer and identified from the Herschel maps, and also all bright cores found in the Laboca maps which do not have a protostellar association (i.e., starless cores). The data are used to provide long-wavelength submm photometry constraining the protostellar envelope masses. The 350mum Saboca data spatially resolve the emission from the outer envelope and are used to constrain their radial density distribution. Furthermore, combined with the Herschel data, we derive column density and temperature maps of the dense gas surrounding the protostars.
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