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Carbon in different phases ([CII], [CI], and CO) in infrared dark clouds: Cloud formation signatures and carbon gas fractions
H. Beuther, S. E. Ragan, V. Ossenkopf +8
Context: How do molecular clouds form out of the atomic phase? And what are the relative fractions of carbon in the ionized, atomic and molecular phase? These are questions at the…
Gas-phase CO depletion and N2H+ abundances in starless cores
N. Lippok, R. Launhardt, D. Semenov +10
Seven isolated, nearby low-mass starless molecular cloud cores have been observed as part of the Herschel key program Earliest Phases of Star formation (EPoS). By applying a ray-tr…
The earliest phases of star formation - A Herschel key project. The thermal structure of low-mass molecular cloud cores
R. Launhardt, A. M. Stutz, A. Schmiedeke +19
The temperature and density structure of molecular cloud cores are the most important physical quantities that determine the course of the protostellar collapse and the properties…
The onset of high-mass star formation in the direct vicinity of the galactic mini-starburst W43
H. Beuther, J. Tackenberg, H. Linz +10
Context: The earliest stages of high-mass star formation are still poorly characterized. It is also unknown whether the initial conditions vary with environment. Aims: We want to i…
Dust-temperature of an isolated star-forming cloud: Herschel observations of the Bok globule CB244
A. Stutz, R. Launhardt, H. Linz +6
We present Herschel observations of the isolated, low-mass star-forming Bok globule CB244. It contains two cold sources, a low-mass Class 0 protostar and a starless core, which is…