Dust temperature, density, and molecular abundance profiles of the isolated low-mass core CB130
Launhardt, Stutz, Schmalzl, Henning, Krause, Nielbock, Linz, Kainulainen, Balog
Low-mass molecular cloud cores are the birthplaces of solar-type stars. Nearby, small and isolated clouds, like Bok globules, are ideal laboratories for studying the physical and chemical properties of such star-forming cores because they are relatively simply structured. Here we present our work on CB130, a globule at a distance of 200 pc which contains one pre-stellar and one proto-stellar core. Taken as part of the Herschel key project EPOS (Earliest Phases of Star Formation) we obtained scan maps in the continuum from 100 to 500 μm and complemented it by ground based continuum observations. We present dust temperature and density maps of CB130 which provide evidence for a temperature drop in the densest regions. We studied the freeze out of CO with respect to the derived dust density, and the corresponding emergence of N2H+. We also present our analysis and surprising results of the HCO+ and H13CO+ emission.