Initial phases of massive star formation in high infrared extinction clouds - I. Physical parameters

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Table 8:

Mean properties of high extinction complexes, clouds and clumps.
Size scale	Method	Mass	Radius	Vol. den.
		( ${M_\odot})$	(pc)	(cm^-3)
complex^a	extinction	4000	1.4	$6\times 10^3$
clouds	extinction	910	0.7	$1\times 10^4$
clouds	1.2 mm emission ^b	700	0.7	$9\times 10^3$
clumps	1.2 mm emission ^c	130	0.15	$2\times 10^5$

Notes. ^(a) The high extinction complexes should be treated as an indication since they have not so strictly defined boundaries as clouds and clumps; ^(b) smoothed maps by 20 $^{\prime \prime }$ Gaussian; ^(c) unsmoothed maps.

Source LaTeX | All tables | In the text

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