2009A&A...507..369W

Query : 2009A&A...507..369W

2009A&A...507..369W - Astronomy and Astrophysics, volume 507369-376 (2009/11-3)

The relation between 13CO J = 2-1 line width in molecular clouds and bolometric luminosity of associated IRAS sources.

WANG K., WU Y.F., RAN L., YU W.T. and MILLER M.

Abstract (from CDS):

We search for evidence of a relation between properties of young stellar objects (YSOs) and their parent molecular clouds to understand the initial conditions of high-mass star formation. A sample of 135 sources was selected from the InfraRed Astronomical Satellite (IRAS) point source catalog, on the basis of their red color to enhance the possibility of discovering young sources. Using the Koelner Observatorium fuer SubMillimeter Astronomie (KOSMA) 3-m telescope, a single-point survey in 13CO J=2-1 was carried out for the entire sample, and 14 sources were mapped further. Archival mid-infrared (MIR) data were compared with the 13CO emissions to identify evolutionary stages of the sources. A 13CO observed sample was assembled to investigate the correlation between 13CO line width of the clouds and the luminosity of the associated YSOs. We identified 98 sources suitable for star formation analyses for which relevant parameters were calculated. We detected 18 cores from 14 mapped sources, which were identified with eight pre-UC HII regions and one UC HII region, two high-mass cores earlier than pre-UC HII phase, four possible star forming clusters, and three sourceless cores. By compiling a large (360 sources) 13CO observed sample, a good correlation was found between the 13CO line width of the clouds and the bolometric luminosity of the associated YSOs, which can be fitted as a power law, lg(ΔV13/km/s)=(-0.023±0.044)+(0.135±0.012)lg,(Lbol/L☉).
Result. show that luminous (>103L☉) YSOs tend to be associated with both more massive and more turbulent (ΔV13>2km/s) molecular cloud structures.

Abstract Copyright: ∼

Journal keyword(s): stars: formation - ISM: clouds - ISM: molecules - ISM: kinematic and dynamics

Simbad objects: 106

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Number of rows : 106
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 IRAS 00117+6412 HII 00 14 26.61 +64 28 30.3           ~ 40 0
2 IRAS 00412+6638 IR 00 44 15.344 +66 54 41.12           ~ 18 0
3 45P 26 Y*O 00 49 55.4 +65 43 39           ~ 27 0
4 IRAS 00557+5612 IR 00 58 44.5 +56 28 16           ~ 7 0
5 GAL 125.63+02.02 Mas 01 16 47.32 +64 45 42.6           ~ 19 0
6 LDN 1375 DNe 02 45 12.5 +60 49 44           ~ 13 0
7 IRAS 02485+6902 * 02 53 06.31656 +69 14 36.6828           ~ 15 0
8 IRAS 02541+6208 HII 02 58 13.54512 +62 20 31.5528           ~ 33 0
9 IRAS 03101+5821 HII 03 14 05 +58 33.1           ~ 22 0
10 IRAS 03258+3104 Y*O 03 28 55.30 +31 14 27.8           ~ 173 1
11 [JCC87] IRAS 2A Y*O 03 28 55.55 +31 14 36.7           ~ 513 3
12 LZK 12 Or* 03 29 10.393560 +31 21 59.19408   15.814 14.497 14.636   B5:V+F2: 147 0
13 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1553 0
14 IRAS 03414+3200 IR 03 44 36.4 +32 09 25           ~ 16 0
15 IRAS 04365+4717 IR 04 40 16.8 +47 23 04           ~ 7 0
16 2MASX J05181754+0710589 Y*O 05 18 17.549 +07 10 58.96           ~ 25 0
17 IRAS 05168+3634 mul 05 20 16.2 +36 37 21           ~ 48 0
18 2MASX J05254062+4141530 G 05 25 40.6555806696 +41 41 53.115773928           ~ 24 0
19 IRAS 05271+3059 IR 05 30 21.2 +31 01 27           ~ 14 0
20 HD 245259 * 05 36 40.8165180720 +31 51 16.220907000   11.0 10.5     B8 19 1
21 IRAS 05450+0019 Or* 05 47 36.67056 +00 20 06.0360           ~ 38 0
22 IRAS 06067+2138 HII 06 09 48.0 +21 38 11           ~ 17 0
23 RAFGL 5186 HII 06 13 16.34 +15 22 42.2           ~ 29 1
24 IRAS 06104+1524A HII 06 13 21.40 +15 23 57.2           ~ 22 0
25 IRAS 06306+0232 HII 06 33 15.8 +02 30 22           ~ 8 0
26 IRAS 06331+1102 HII 06 35 56.138 +11 00 18.77           ~ 9 0
27 IRAS 06381+1039 HII 06 40 58.0 +10 36 49           ~ 22 1
28 IRAS 06382+1017 Y*O 06 41 02.660 +10 15 01.91           ~ 52 0
29 IRAS 06501+0143 HII 06 52 46.18 +01 40 19.0           ~ 22 0
30 IRAS 07024-1102 HII 07 04 45.6 -11 07 14           ~ 11 0
31 IRAS 07111-1211 HII 07 13 29.859 -12 16 52.26           ~ 9 0
32 IRAS 07119-1210A HII 07 14 17.7 -12 16 14           ~ 8 0
33 IRAS 07207-1435 HII 07 23 01.8935434392 -14 41 38.218885080           ~ 20 0
34 IRAS 17576-1845 IR 18 00 34.3 -18 45 17           ~ 10 0
35 IRAS 18145-1557 HII 18 17 27.02 -15 56 22.9           ~ 13 0
36 IRAS 18205-1316 Y*? 18 23 20.95488 -13 15 05.5080           ~ 8 0
37 IRAS 18236-1241 IR 18 26 24.7 -12 39 37           ~ 11 0
38 IRAS 18278-0212 IR 18 30 28.0 -02 10 48           ~ 10 0
39 IRAS 18301-0853 HII 18 32 55.17 -08 51 21.3           ~ 6 0
40 IRAS 18314-0820 HII 18 34 09.0 -08 17 52           ~ 9 0
41 IRAS 18324-0855 IR 18 35 10.5 -08 52 35           ~ 5 0
42 IRAS 18358-0112 IR 18 38 25.9 -01 09 51           ~ 5 0
43 IRAS 18403-0445 HII 18 42 59.9 -04 42 00           ~ 7 0
44 AGAL G033.633-00.022 smm 18 52 47.8 +00 36 47           ~ 21 0
45 IRAS 18502+0034 HII 18 52 50.9 +00 38 03           ~ 9 0
46 IRAS 18532+0047 Rad 18 55 50.6 +00 51 22           ~ 18 0
47 [BNM96] 035.445-0.286 HII 18 57 02.5481696040 +02 06 23.060718972           ~ 5 0
48 IRAS 18578+0313 HII 19 00 21.1 +03 17 45           ~ 4 0
49 HRDS G038.643-00.227 bub 19 02 40.4 +04 58 13           ~ 19 0
50 IRAS 19011+0450 HII 19 03 36.9 +04 55 14           ~ 6 0
51 IRAS 19029+0556 Y*O 19 05 24.11520 +06 01 25.9068           ~ 43 1
52 TYC 474-681-1 * 19 05 36.4468168152 +06 25 59.577312720   11.76 11.41 11.58   ~ 8 0
53 IRAS 19056+0624 HII 19 08 02.9 +06 29 11           ~ 5 0
54 IRAS 19205+1358 IR 19 22 53.8 +14 04 11           ~ 6 0
55 IRAS 19215+1410 IR 19 23 49.4 +14 16 20           ~ 4 0
56 IRAS 19216+1658 MIR 19 23 53.05728 +17 04 03.7596           ~ 6 0
57 IRAS 19282+1742 HII 19 30 30.5 +17 48 30           ~ 7 0
58 IRAS 19286+1722 mul 19 30 54.0 +17 28 46           ~ 4 0
59 IRAS 19291+1713 HII 19 31 23.4 +17 19 42           ~ 6 0
60 IRAS 19298+1707 HII 19 32 08.4 +17 13 35           ~ 5 0
61 IRAS 19348+2229 IR 19 36 59.8 +22 36 08           ~ 5 0
62 IRAS 19368+2239 HII 19 38 57.0 +22 46 27           ~ 21 0
63 IRAS 19406+2333 HII 19 42 44.031 +23 40 33.39           ~ 4 0
64 AGAL G059.997+00.117 Y*O 19 43 27.784 +23 56 53.51           ~ 21 0
65 IRAS 19415+2312 HII 19 43 39.7 +23 20 06           ~ 4 0
66 IRAS 19560+3135 IR 19 58 03.142 +31 44 06.97           ~ 12 0
67 LBN 070.13+01.71 HII 20 00 53.25 +33 29 26.0   13.79 12.86     ~ 57 2
68 IRAS 20050+2720 Y*O 20 07 06.549 +27 28 49.10           ~ 107 0
69 NAME IRAS 20050+2720 Cluster Cl* 20 07 06.7 +27 28 53           ~ 83 0
70 IRAS 20062+3550 HII 20 08 09.8 +35 59 20           ~ 21 0
71 IRAS 20067+3415 HII 20 08 41.3 +34 24 19           ~ 7 0
72 IRAS 20094+2744 HII 20 11 29.1 +27 53 16           ~ 5 0
73 IRAS 20103+3633 HII 20 12 13.9 +36 42 59           ~ 14 0
74 IRAS 20116+3605 IR 20 13 34.212 +36 14 59.77           ~ 13 0
75 IRAS 20145+3645 HII 20 16 27.429 +36 54 54.31           ~ 9 0
76 IRAS 20149+3913 HII 20 16 42.6 +39 23 15           ~ 6 0
77 [KMH2014] J201659.12+392103.93 Y*O 20 16 59.120 +39 21 03.93           ~ 8 0
78 IRAS 20178+3723 HII 20 19 43.1 +37 33 12           ~ 4 0
79 IRAS 20227+4154 HII 20 24 31.4 +42 04 17           ~ 32 0
80 IRAS 20231+3440 HII 20 25 07.2435401472 +34 50 05.260444728           ~ 21 1
81 IRAS 20261+3922 IR 20 27 58.792 +39 32 08.60           ~ 9 0
82 IRAS 20281+4038 IR 20 29 54.8 +40 48 52           ~ 14 0
83 NAME Cyg X Cld 20 30 04.7973633 +40 51 36.002197           ~ 962 1
84 IRAS 20290+4052 HII 20 30 50.660 +41 02 27.60           ~ 32 0
85 IRAS 20326+3757 HII 20 34 33.0 +38 08 02           ~ 5 0
86 IRAS 20330+4109 IR 20 34 48.5 +41 20 21           ~ 4 0
87 IRAS 20345+4024 IR 20 36 24.1 +40 35 08           ~ 4 0
88 IRAS 20444+4629 MoC 20 45 59.64 +46 40 06.2           ~ 25 0
89 IRAS 20508+4825 HII 20 52 28.1 +48 36 30           ~ 6 0
90 IRAS 21025+4912 HII 21 04 15.4 +49 24 25           ~ 10 0
91 IRAS 21246+5512 MIR 21 26 14.07408 +55 25 54.6564           ~ 9 0
92 IRAS 21293+5535 HII 21 30 55.7 +55 48 49           ~ 10 0
93 IRAS 21334+5039 Y*O 21 35 09.10944 +50 53 09.6072           ~ 44 0
94 2MASX J21394111+5120356 Mas 21 39 41.118 +51 20 35.62           ~ 14 0
95 [BGE2002] BIMA 2 Y*O 21 40 42.36 +58 16 09.7           ~ 123 0
96 NAME IC 1396 North CGb 21 40 42.6537 +58 16 01.882           ~ 193 1
97 LDN 1059 DNe 21 40 57.422 +50 39 58.32           ~ 15 0
98 IRAS 21418+5403 HII 21 43 30.000 +54 16 57.94           ~ 13 0
99 IRAS 21519+5613 HII 21 53 38.8 +56 27 53           ~ 40 0
100 GN 22.05.1 Y*O 22 06 50.449 +59 02 45.65           ~ 49 0
101 LDN 1204A HII 22 21 26.68 +63 51 38.2           ~ 120 0
102 IRAS 22305+5803 Y*O 22 32 23.972 +58 18 57.91           ~ 39 0
103 IRAS 22506+5944 Y*O 22 52 38.09760 +60 01 01.1928           ~ 60 0
104 CPM 38 Y*O 22 55 59.780 +58 14 42.49           ~ 43 0
105 NAME Cep E HII 23 03 12.779 +61 42 25.75           ~ 183 0
106 NAME Galactic Molecular Ring PoG ~ ~           ~ 45 0

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