Low-mass protostars and dense cores in different evolutionary stages in IRAS 00213+6530

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Table 12:

Physical parameters of IRAS 00213+6530.
	Mass^a	$\Delta v^{b}$	$\theta~^{c}$	$M_{{\rm vir}}^{d}$
Region	( $M_{\hbox{$\odot$ }}$ )	(km s^-1)	(arcsec)	( $M_{\hbox{$\odot$ }}$ )
MM1	3.5	0.85	7	1.3
Southern cloud	<0.3	0.65	6	0.7
MM2	1.1	0.75	11	1.6

^a Estimated as $M=\mu_{{\rm H_2}}m_{{\rm H}}\sum N({\rm H_{2}})\Delta A$ , where $N({\rm H}_{2})$ is taken from the H₂ column density map, $\Delta A$ is the pixel area, and a mean molecular mass per H₂ molecule $\mu_{{\rm H_2}}=2.8$ , which corresponds to a 10% helium abundance. ^b Intrinsic line width of the magnetic hyperfine components. ^c Deconvolved geometrical mean size of the major and minor axes of the source, obtained from a 2D Gaussian fit. ^d Estimated for a density distribution $n\propto$ r^-2.

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