Protostars and Planets VI, Heidelberg, July 15-20, 2013

Poster 1G008

Strong irradiation of low-mass protostars in Corona Australis

Lindberg, Johan (Centre for Star and Planet Formation and Niels Bohr Institute, University of Copenhagen)
Jørgensen, Jes (Niels Bohr Institute and Centre for Star and Planet Formation, University of Copenhagen)
The DIGIT Team, ()
The ALMA Cycle 0 protostars team, ()

Very young low-mass protostars are deeply embedded in cold gas and dust. These early stages of star formation often show an interesting and varied chemistry, e.g. with complex organic molecules or long carbon-chain molecules in the inner regions. The effect on the physics and chemistry from nearby luminous stars remains poorly understood. We find unexpectedly high temperatures in the R CrA region, but also in other protostars in CrA. Models suggest that the Herbig Be star R CrA is the dominant heat source in this star-forming region. Thus, also intermediate-mass stars have large effects on the physical properties in such regions. ALMA observations of H2CO can be used to trace such heating also in more distant regions.

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