1998A&A...331L..65H

One objective of the IRAM key project small-scale structure of pre-star forming regions is to determine the continuation of the mass spectra for molecular cloud fragments and other scaling laws from large scales down to smallest scales accessible with single-dish telescopes. In this Letter we present first results of the combination of the small scale data from this project and large scale data obtained with the CfA 1.2m and the KOSMA 3m telescopes for the Polaris Flare analyzed using a Gaussian clump decomposition. For data in the ¹²CO J=1-0 and 2-1 lines we find no deviation from the power law slope of the mass spectra (dN/dM∝M^–1.84), over a range in masses of more than at least 5 orders of magnitudes, from masses of several 10M_☉ down to Jupiter masses. The size spectrum is in agreement with a power law of the form dN/dr∝r^–3.0. The mass-size relation is a power law of the form M∝r^2.31 over a range of more than 2 orders of magnitudes in size.