The end of star formation in Chamaeleon I? - A LABOCA census of starless and protostellar cores

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Volume 527 (March 2011)

A&A, 527 (2011) A145

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Table 10

Large-scale filamentary structures in Cha I probed with LABOCA at 870 μm (see Fig. 5b).

N_fil	RA^a	Dec^a	f_peak^a	f_mean^b	f_tot^b	A^c	θ_maj^d	θ_min^d	R_a^e	N_peak^f	N_mean^f	M^g	a_maj^h	a_min^h	M_totⁱ	M_lin^j
	(J2000)	(J2000)	(mJy/21″-beam)		(Jy)	(′ × ′)	(′)	(′)		(10²¹ cm^-2)		(M_⊙)	(pc)	(pc)	(M_⊙)	(M_⊙ / pc)
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)	(12)	(13)	(14)	(15)	(16)	(17)

1	11:06:38.57	–77:23:48.4	200	55	18.2	46.6	13.0	4.2	3.1	17.5	4.9	9.7	0.57	0.18	19.0	33
2	11:10:00.10	–76:35:37.2	116	36	20.2	79.4	22.2	3.9	5.7	10.2	3.2	10.7	0.97	0.17	16.0	17
3	11:07:46.92	–77:38:04.9	73	24	7.8	45.2	10.5	4.9	2.1	6.4	2.1	4.1	0.46	0.22	6.6	14
4^k	11:02:27.42	–77:38:59.6	51	23	10.8	67.0	10.2	4.4	2.3	4.5	2.0	5.7	0.45	0.19	9.1	8
4^k	–	–	–	–	–	–	16.5	2.3	7.3	–	–	–	0.72	0.10	–	–
5	11:04:22.92	–77:46:59.4	44	21	2.2	14.5	5.9	2.7	2.1	3.9	1.8	1.1	0.26	0.12	2.6	10

Notes.

^(a)

Peak position and flux density measured with Clumpfind.

^(b)

Mean and total flux densities inside the contour at 10 mJy/21″-beam (about 3.3σ) – hereafter called contour C.

^(c)

Angular area of contour C.

^(d)

Major and minor angular axes of contour C measured by hand.

^(e)

Aspect ratio.

^(f)

Peak and mean H₂ column density.

^(g)

Mass within contour C in smoothed map at scale 5.

^(h)

Physical major and minor axes of contour C.

⁽ⁱ⁾

Mass within contour C in full LABOCA map.

^(j)

Mass per unit length M_tot / a_maj.

^(k)

This structure has a T shape and consists of two filaments that were identified as a single structure by Clumpfind. The major and minor axes were measured for each filament separately, but all other parameters correspond to the entire structure.

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