A spectral line survey of the starless and proto-stellar cores detected by BLAST toward the Vela-D molecular cloud

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Table 11

Median properties of starless and proto-stellar cores.

Source Type	R_flat	η	FWHM^a	T	^b		^c
	[arcsec]		[km s^-1]	[K]		[× 10⁶ cm^-3 K]

Starless	27.0 ± 12.0	0.8 ± 0.7	1.4 ± 0.4	15.1 ± 1.6	0.5 ± 0.3	~5	~10³	5.7 ± 1.7
BLAST063	24.0 ± 6.0^d	0.6 ± 0.3^d	1.5 ± 0.1	12.2	0.3	~10	~600	5.7
Proto-stellar	21.0 ± 5.9	1.1 ± 0.5	1.6 ± 0.6	16.8 ± 1.8	0.8 ± 0.4	~19	~60	6.4 ± 1.9

Notes.

^(a)

From optically thin tracers only.

^(b)

M_vir estimated assuming a density distribution ρ ∝ r^-2.

^(c)

Mean values based on two (starless) and three (proto-stellar) sources.

^(d)

Excluding N₂H⁺.

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