Fibers in the NGC 1333 proto-cluster | Astronomy & Astrophysics (A&A)

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Table 3

Star formation in NGC 1333 and B213-L1495.

	B213	NGC 1333	Ratio
	(1)	(2)	(3)

Length (pc)^⋆	~10	~2	–
Radius (pc)^⋆	~0.5	~0.4	–
Area = L × 2R (pc²)	10	0.8	0.08
Total mass (gas+stars; M_⊙)	~700	~1300	1.8

N(protostars)	16	45	2.8
N(cores)	19	50	2.6
N(fibers)	35	15	0.4
N(fertile fibers)	7	15	2.1
N(cores)/N(fertile fib.)	2.7	3.7	1.4
SFE(dense) (%)	~7.5	~10	1.3

Σ (proto) (pc^-2)^⋆⋆	1.6	56.3	35.1
Σ (cores) (pc^-2)^⋆⋆	1.9	62.5	32.9
Σ (fertile fibers) (pc^-2)^⋆⋆	0.7	18.7	26.8

Notes. (1) values derived by Hacar et al. (2013); (2) this work; (3) ratio between NGC 1333 and B213-L1495. Remarks:

^(⋆)

Approximate cloud extension (aka length and radius) covered in the corresponding studies.

^(⋆⋆)

Surface densities calculated assuming with Σ(X) = N(X) / (2RL).

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