SIMBAD references

2010ApJ...716..433K - Astrophys. J., 716, 433-445 (2010/June-2)

The mass-size relation from clouds to cores. II. Solar neighborhood clouds.

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

Abstract (from CDS):

We measure the mass and size of cloud fragments in several molecular clouds continuously over a wide range of spatial scales (0.05 ≲ r/pc ≲ 3). Based on the recently developed "dendrogram-technique," this characterizes dense cores as well as the enveloping clouds. "Larson's Third Law" of constant column density, m(r) {vprop} r 2, is not well suited to describe the derived mass-size data. Solar neighborhood clouds not forming massive stars (≲10 M; Pipe Nebula, Taurus, Perseus, and Ophiuchus) obey m(r) ≤ 870 M(r/pc)1.33. In contrast to this, clouds forming massive stars (Orion A, G10.15 - 0.34, G11.11 - 0.12) do exceed the aforementioned relation. Thus, this limiting mass-size relation may approximate a threshold for the formation of massive stars. Across all clouds, cluster-forming cloud fragments are found to be–at given radius–more massive than fragments devoid of clusters. The cluster-bearing fragments are found to roughly obey a mass-size law m {vprop} r 1.27 (where the exponent is highly uncertain in any given cloud, but is certainly smaller than 1.5).

Abstract Copyright:

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

Status at CDS:  

Simbad objects: 16

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2010ApJ...716..433K and select 'bookmark this link' or equivalent in the popup menu


2020.05.26-03:30:08

© Université de Strasbourg/CNRS

    • Contact