2003ApJ...582..277M

Query : 2003ApJ...582..277M

2003ApJ...582..277M - Astrophys. J., 582, 277-291 (2003/January-1)

From massive protostars to a giant H II region: submillimeter imaging of the galactic ministarburst W43.

MOTTE F., SCHILKE P. and LIS D.C.

Abstract (from CDS):

We have carried out a submillimeter continuum and spectroscopic study of the W43 main complex, a massive star-forming region, which harbors a giant H II region. The maps reveal a filamentary structure containing ∼50 fragments with masses of 40-4000 M☉and typical diameters of 0.25 pc. Their large sizes, large nonthermal velocities (Δv∼5 km.s–1), and high densities (nH2∼106 cm–3) suggest that they are protoclusters and excellent sites to form massive stars. Follow-up observations are necessary, but we have already identified three protoclusters to be very good candidates for containing very young massive protostars. The starburst cluster that excites the giant H II region has a large impact on the molecular complex. However, it remains unclear whether this first episode of star formation is triggering the formation of new massive stars, through ionization shocks crossing the closeby molecular clouds. W43 is thus an ideal laboratory to investigate massive star formation from the protostellar phase to that of giant H II regions. Moreover, the very active star-forming complex W43 may be considered a Galactic ministarburst region that could be used as a miniature model of starburst galaxies.

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Journal keyword(s): ISM: Dust, Extinction - ISM: H II Regions - ISM: Individual: Alphanumeric: W43 - ISM: Structure - Stars: Formation - Submillimeter

Nomenclature: Table 1: [MSL2003] W43-MMNN (Nos MM1 to MM51).

Simbad objects: 66

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Number of rows : 66
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME Flame Nebula HII 05 41 42.7 -01 54 44           ~ 703 1
2 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1376 0
3 M 78 RNe 05 46 45.8 +00 04 45   8.0       ~ 375 0
4 NGC 3603 OpC 11 15 10.8 -61 15 32           ~ 1065 1
5 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3629 1
6 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 736 0
7 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1612 0
8 [MSL2003] W43-MM38 smm 18 47 24.3 -01 55 59           ~ 1 0
9 [MSL2003] W43-MM50 smm 18 47 25.1 -01 55 24           ~ 1 0
10 [MSL2003] W43-MM41 smm 18 47 25.3 -01 56 55           ~ 1 0
11 [MSL2003] W43-MM40 smm 18 47 26.6 -01 57 22           ~ 1 0
12 [MSL2003] W43-MM22 smm 18 47 27.0 -02 00 36           ~ 2 0
13 [MSL2003] W43-MM36 smm 18 47 27.1 -01 57 43           ~ 1 0
14 HIGALBM G030.7562+00.0029 smm 18 47 27.4 -01 56 08           ~ 4 0
15 AGAL G030.746-00.001 cor 18 47 27.6 -01 56 55           ~ 20 0
16 [MSL2003] W43-MM37 smm 18 47 27.6 -01 56 36           ~ 1 0
17 [MSL2003] W43-MM34 smm 18 47 27.9 -02 01 19           ~ 1 0
18 [MSL2003] W43-MM30 smm 18 47 30.2 -02 00 46           ~ 1 0
19 [MSL2003] W43-MM47 smm 18 47 30.9 -01 57 41           ~ 1 0
20 SNR G030.8-00.0 SNR 18 47 32 -01 56.5           ~ 531 0
21 JCMTLSP J184733.1-015714 smm 18 47 32.9 -01 57 14           ~ 4 0
22 [MSL2003] W43-MM28 smm 18 47 33.7 -02 01 03           ~ 1 0
23 [MSL2003] W43-MM19 smm 18 47 33.7 -01 55 25           ~ 1 0
24 [MSL2003] W43-MM45 smm 18 47 34.4 -01 57 02           ~ 1 0
25 [MSL2003] W43-MM51 smm 18 47 34.7 -02 01 02           ~ 3 0
26 AGAL G030.763-00.031 smm 18 47 35.2 -01 56 36           ~ 19 0
27 [MSL2003] W43-MM18 smm 18 47 35.6 -02 02 14           ~ 2 0
28 IRAS 18449-0158 HII 18 47 35.6 -01 55 26           ~ 24 0
29 AGAL G030.784-00.021 Y*O 18 47 35.6 -01 55 16           ~ 25 0
30 [MSL2003] W43-MM12 smm 18 47 35.9 -02 01 16           ~ 2 0
31 [MSL2003] W43-MM13 smm 18 47 36.0 -02 01 54           ~ 2 0
32 NAME W 43 Star Cluster Cl* 18 47 36 -01 56.5           ~ 10 1
33 MSX5C G030.6882-00.0726 MIR 18 47 36.1 -02 01 48           ~ 2 0
34 [MSL2003] W43-MM44 smm 18 47 36.4 -01 58 17           ~ 1 0
35 [MSL2003] W43-MM20 smm 18 47 36.4 -01 56 41           ~ 2 0
36 AGAL G030.703-00.067 cor 18 47 36.6 -02 00 54           ~ 66 0
37 IRAS 18450-0205 IR 18 47 36.6 -02 01 55           ~ 9 0
38 [MSL2003] W43-MM8 smm 18 47 37.0 -01 55 28           ~ 3 0
39 GAL 030.8-00.0 MoC 18 47 37 -01 06.5           ~ 5 0
40 [MSL2003] W43-MM48 smm 18 47 38.1 -01 59 10           ~ 1 0
41 AGAL G030.753-00.051 smm 18 47 38.3 -01 57 44           ~ 30 0
42 [MSL2003] W43-MM32 smm 18 47 38.5 -01 55 28           ~ 1 0
43 [MSL2003] W43-MM14 smm 18 47 38.8 -01 56 49           ~ 2 0
44 GAL 030.76-00.05 HII 18 47 38.9 -01 57 25           ~ 22 0
45 JCMTLSP J184739.4-020030 smm 18 47 39.2 -02 00 30           ~ 6 0
46 [MSL2003] W43-MM21 smm 18 47 39.3 -01 53 53           ~ 2 0
47 AGAL G030.741-00.061 cor 18 47 39.6 -01 58 34           ~ 20 0
48 [MSL2003] W43-MM11 smm 18 47 39.7 -01 57 25           ~ 3 0
49 [MSL2003] W43-MM16 smm 18 47 40.1 -01 53 34           ~ 3 0
50 [MSL2003] W43-MM31 smm 18 47 40.5 -01 58 52           ~ 1 0
51 JCMTLSP J184740.8-015421 PoC 18 47 40.8 -01 54 21           ~ 5 0
52 [MSL2003] W43-MM42 smm 18 47 41.3 -01 59 23           ~ 1 0
53 [MSL2003] W43-MM3 smm 18 47 41.7 -02 00 26           ~ 21 0
54 [MSL2003] W43-MM23 smm 18 47 41.7 -01 53 23           ~ 1 0
55 AGAL G030.839-00.019 smm 18 47 42.3 -01 52 11           ~ 8 0
56 [MSL2003] W43-MM17 smm 18 47 42.5 -01 59 38           ~ 2 0
57 JCMTLSP J184742.6-015612 smm 18 47 42.6 -01 56 17           ~ 4 0
58 V* AB Aql LP* 18 47 42.7054995096 -02 00 37.660922676   12.13 10.00     M5 14 0
59 [MSL2003] W43-MM9 smm 18 47 44.8 -01 54 43           ~ 3 0
60 [MSL2003] W43-MM5 smm 18 47 46.3 -01 54 34           ~ 1 0
61 AGAL G030.818-00.056 cor 18 47 47.0 -01 54 28           ~ 164 0
62 [MSL2003] W43-MM49 smm 18 47 47.9 -01 54 01           ~ 1 0
63 [MSL2003] W43-MM33 smm 18 47 50.2 -01 54 04           ~ 2 0
64 AGAL G030.819-00.081 Y*O 18 47 52.38 -01 55 04.4           ~ 10 0
65 AGAL G030.848-00.081 Y*O 18 47 56 -01 53.5           ~ 33 0
66 [MSL2003] W43-MM46 smm 18 47 56.8 -01 55 02           ~ 1 0

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