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Table 2

Physical properties of fragments in Musca.

# RA Dec F 870,peak R M NIR n Region
[1021 cm-2] [Jy beam-1] [pc] [M] [104 cm-3]

1 12:21:26 –72:21:06 23 0.15 0.07 2.5 4 South
2 12:21:54 –72:17:02 19 0.11 0.07 1.7 3 South
3a 12:22:19 -72:10:24 17 0.10 0.06 1.0 2 South
4 12:24:32 –71:50:23 27 0.22 0.08 3.5 3 South
5 12:25:37 –71:42:14 34 0.18 0.11 7.1 3 South

6 12:26:46 –71:30:00 15 0.10 0.07 1.7 3 Center
7 12:26:59 –71:27:41 17 0.10 0.06 1.2 3 Center
8b 12:27:45 –71:22:07 15 0.10 0.05 1.3 3 Center
9c 12:29:46 –71:22:42 6 0.05 0.04 0.5 1 Center
10a 12:28:30 –71:18:13 17 0.12 0.04 1.4 4 Center
11a 12:29:26 –71:10:41 20 0.17 0.05 1.4 3 Center

12 12:30:48 –71:10:08 15 0.14 0.05 0.9 4 North
13 12:31:03 –71:04:32 19 0.10 0.04 1.1 6 North
14 12:31:05 –71:01:54 19 0.09 0.04 0.9 5 North
15 12:31:53 –71:02:08 17 0.07 0.07 1.8 3 North
16 12:32:13 –70:57:49 13 0.06 0.04 0.6 4 North
17 12:34:09 –70:57:40 7 0.06 0.04 0.3 2 North
18 12:34:24 –70:56:11 8 0.08 0.04 0.3 2 North
19 12:32:41 –70:44:21 15 0.19 0.06 1.0 2 North
20 12:35:00 –70:43:54 11 0.12 0.05 0.6 3 North
21 12:35:17 –70:40:10 30 0.62 0.05 1.1 5 North

Notes.

(a)

The peak value of dust emission from the fragment is more than 45′′ offset from the associated extinction peak. The structure is considered a fragment because the contours outlining the local maximum in emission overlap with the contours outlining a local maximum in extinction. The mass estimate is based on extinction data; the aperture for the mass calculation was centered on the nearest extinction maximum.

(b)

The contours defining the local maximum in emission map overlap with two local extinction maxima. The mass estimate is based on extinction data; the aperture for the mass calculation was centered on the nearest extinction maximum.

(c)

The fragment is offset by about 0.5 pc from the filament crest. Consequently, we do not include the fragment into the fragmentation analysis.

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