Two-level hierarchical fragmentation in the northern filament of the Orion Molecular Cloud 1

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Volume 587 (March 2016)

A&A, 587 (2016) A47

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Table 4

Calculated properties of the SMA sources and their nearest-neighbor separation.

ID	R _geom	Mass^a		NNS
	(AU)	(M_⊙)	(10⁷ cm^-3)	(arcsec)

SMA-1	661 ± 195	0.5 ± 0.2	6.6 ± 3.4	5.8 ± 0.6
SMA-2	1012 ± 234	1.0 ± 0.3	3.5 ± 1.4	5.8 ± 0.6
SMA-3	949 ± 258	1.0 ± 0.4	4.3 ± 2.0	20.5 ± 0.5
SMA-4	557 ± 177	0.5 ± 0.2	10.5 ± 5.9	4.9 ± 0.6
SMA-5	436 ± 243	0.4 ± 0.3	16.3 ± 15.8	4.9 ± 0.6
SMA-6	1285 ± 124	2.2 ± 0.3	3.7 ± 0.7	9.5 ± 0.4
SMA-7	1178 ± 210	1.7 ± 0.6	3.9 ± 1.5	6.9 ± 0.5
SMA-8	1217 ± 395	1.3 ± 0.8	2.6 ± 1.8	4.2 ± 0.7
SMA-9	594 ± 343	0.1 ± 0.1	2.3 ± 2.8	4.2 ± 0.7
SMA-10	906 ± 368	0.9 ± 0.6	4.3 ± 3.3	4.2 ± 0.7
SMA-11	1024 ± 292	0.9 ± 0.4	3.1 ± 1.6	4.0 ± 0.8
SMA-12	564 ± 407	0.1 ± 0.1	2.0 ± 3.0	4.0 ± 0.8
SMA-13	1151 ± 63	2.3 ± 0.2	5.4 ± 0.6	6.5 ± 0.6
SMA-14	629 ± 79	0.8 ± 0.1	11.1 ± 2.6	9.0 ± 0.3
SMA-15	570 ± 18	1.3 ± 0.1	26.4 ± 1.5	10.6 ± 0.4
SMA-16	757 ± 199	0.7 ± 0.2	5.5 ± 2.5	10.6 ± 0.4
SMA-17	534 ± 109	1.0 ± 0.3	22.6 ± 8.4	3.0 ± 0.5
SMA-18	694 ± 587	0.8 ± 1.6	9.0 ± 18.9	3.0 ± 0.5
SMA-19	917 ± 470	0.9 ± 0.8	4.2 ± 4.2	4.7 ± 0.4
SMA-20	771 ± 124	0.9 ± 0.2	7.3 ± 2.1	23.6 ± 0.5
SMA-21	939 ± 417	0.8 ± 0.5	3.3 ± 2.6	7.2 ± 0.5
SMA-22	810 ± 249	0.6 ± 0.3	4.3 ± 2.3	7.2 ± 0.5
SMA-23	850 ± 89	0.5 ± 0.1	3.2 ± 0.6	8.8 ± 0.5
SMA-24	969 ± 116	0.9 ± 0.2	3.6 ± 0.8	8.8 ± 0.5

Notes.

^(a)

If a warmer T_d of 20 K is used, then the masses of the sources are lower by a factor of ~1.5. Taking into account the estimated thermal free-free emission from jets, the masses listed may be lower by a value smaller than 0.1 M_⊙.

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