2011ApJ...738..152S

Query : 2011ApJ...738..152S

2011ApJ...738..152S - Astrophys. J., 738, 152 (2011/September-2)

Prestellar cores in the Coalsack.

SAUL M., CUNNINGHAM M., RATHBORNE J., WALSH W. and BUTNER H.M.

Abstract (from CDS):

We present high spectral resolution millimeter mapped observations of seven prestellar cores in the Coalsack, including imaging in five optically thin molecular species of the kinematic structure of two of the densest cores, C2 and C4. Various collapse-critical indices are calculated; critical masses needed for collapse are consistently greater than those observed, the latter ranging from 0.4 to 2.4 M☉. The molecular emission in several of the cores shows line profiles with infall characteristics as well as elongated areas of increased line widths and reversals of center velocity gradients, implying that accretion disks may be forming.

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Journal keyword(s): ISM: clouds - ISM: molecules - ISM: structure - radio lines: ISM - stars: formation - stars: protostars

Nomenclature: Table 1: [SCR2011] CN (Nos C1-C7).

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME Auriga reg 04 20 00.0 +38 05 00           ~ 238 0
2 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
3 V* R Car Mi* 09 32 14.5961045592 -62 47 20.002588152 8.51 7.40 6.10 5.44 2.90 M5-8 182 0
4 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 887 0
5 [SCR2011] C4 cor 12 30 19.0 -63 46 33           ~ 1 0
6 NAME Coalsack Nebula DNe 12 31 19 -63 44.6           ~ 275 0
7 [SCR2011] C2 cor 12 31 39.0 -63 44 58           ~ 2 0
8 [SCR2011] C3 cor 12 32 05.0 -63 49 30           ~ 1 0
9 [SCR2011] C5 cor 12 33 00.0 -63 49 45           ~ 1 0
10 [SCR2011] C1 cor 12 33 10.0 -63 42 01           ~ 1 0
11 [SCR2011] C7 cor 12 33 50.0 -63 30 16           ~ 1 0
12 [SCR2011] C6 cor 12 33 58.0 -63 44 11           ~ 1 0
13 Ass Cen OB 1 As* 13 02 -61.4           ~ 107 0
14 NAME Lupus Complex SFR 16 03 -38.1           ~ 851 0
15 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
16 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 442 1

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