Thermal velocity dispersions:

Temperature	K
Molecular Weight	amu
The thermal velocity dispersion is	km/s.

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Virial masses:

Velocity dispersion	km/s
Radius	pc
The virial mass is	M⊙.

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Conversion between intensities and brightness temperatures:

Frequency	GHz
Beam size	arcsec
Specific intensity	Jy
The brightness temperature is	K.
Or:
Brightness temperature	K
The specific intensity is	Jy.