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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…
The Earliest Phases of Star formation (EPoS): Temperature, density, and kinematic structure of the star-forming core CB 17
M. Schmalzl, R. Launhardt, A. M. Stutz +7
Context: The initial conditions for the gravitational collapse of molecular cloud cores and the subsequent birth of stars are still not well constrained. The characteristic cold te…
Spectral Energy Distributions of QSOs at z>5: common AGN-heated dust and occasionally strong star-formation
C. Leipski, K. Meisenheimer, F. Walter +7
We present spectral energy distributions (SEDs) of 69 QSOs at z>5, covering a rest frame wavelength range of 0.1mu to ~80mu, and centered on new Spitzer and Herschel observations.…