Mika Juvela


Galactic Cold Cores

The team for the Planck and Herschel projects on cold cores.


Within the Herschel key programme "Galactic Cold Cores" we are carrying out photometric observations of cold dust clouds that were first detected in the Planck satellite survey. The Herschel observations will eventually cover more than one hundred separate fields that will be mapped at wavelengths 100−500 Ám using the PACS and SPIRE instruments. The analysis of the first fields has revealed sources that are in different stages of star formation and has confirmed the presence of dust opacity and spectral index variations associated with the dense clumps. We also present results from ground-based molecular line follow-up studies and discuss near-infrared data that indicate the presence of the "coreshine" phenomenon in several of the sources.