SIMBAD references

2010ApJ...712.1137K - Astrophys. J., 712, 1137-1146 (2010/April-1)

The mass-size relation from clouds to cores. I. A new probe of structure in molecular clouds.

KAUFFMANN J., PILLAI T., SHETTY R., MYERS P.C. and GOODMAN A.A.

Abstract (from CDS):

We use a new contour-based map analysis technique to measure the mass and size of molecular cloud fragments continuously over a wide range of spatial scales (0.05 ≤ r/pc ≤ 10), i.e., from the scale of dense cores to those of entire clouds. The present paper presents the method via a detailed exploration of the Perseus molecular cloud. Dust extinction and emission data are combined to yield reliable scale-dependent measurements of mass. This scale-independent analysis approach is useful for several reasons. First, it provides a more comprehensive characterization of a map (i.e., not biased toward a particular spatial scale). Such a lack of bias is extremely useful for the joint analysis of many data sets taken with different spatial resolution. This includes comparisons between different cloud complexes. Second, the multi-scale mass-size data constitute a unique resource to derive slopes of mass-size laws (via power-law fits). Such slopes provide singular constraints on large-scale density gradients in clouds.

Abstract Copyright:

Journal keyword(s): ISM: clouds - methods: data analysis - stars: formation

Simbad objects: 8

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2021.03.02-12:52:28

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