2007ApJ...655..316E

Query : 2007ApJ...655..316E

2007ApJ...655..316E - Astrophys. J., 655, 316-331 (2007/January-3)

Mapping molecular emission in Vela molecular ridge cloud D.

ELIA D., MASSI F., STRAFELLA F., DE LUCA M., GIANNINI T., LORENZETTI D., NISINI B., CAMPEGGIO L. and MAIOLO B.M.T.

Abstract (from CDS):

We present the 12CO(1-0) and 13CO(2-1) line maps obtained observing with the SEST, a ∼1°x1° region of the Vela Molecular Ridge, cloud D. This cloud is part of an intermediate-mass star-forming region that is relatively close to the Sun. Our observations reveal, over a wide range of spatial scales (from ∼0.1 to a few parsecs), a variety of dense structures such as arcs, filaments, and clumps that are in many cases associated with far-IR pointlike sources, recognized as young stellar objects and embedded star clusters. The velocity field analysis highlights the presence of possible expanding shells, extending over several parsecs, probably related to the star-forming activity of the cloud. Furthermore, the analysis of the line shapes in the vicinity of the far-IR sources allowed the detection of 13 molecular outflows. Considering a hierarchical scenario for the gas structure, a cloud decomposition was obtained for both spectral lines by means of the CLUMPFIND algorithm. The CLUMPFIND output has been discussed critically, and a method is proposed to reasonably correct the list of the identified clumps. We find that the corresponding mass spectrum shows a spectral index α∼1.3-2.0, and the derived clump masses are below the corresponding virial masses. The mass-radius and velocity dispersion-radius relationships are also briefly discussed for the recovered clump population.

Abstract Copyright: ∼

Journal keyword(s): ISM: Clouds - ISM: individual (Vela Molecular Ridge) - Radio Lines: ISM - Stars: Formation - Submillimeter

Nomenclature: Table 3: [EMS2007] VMR-DNN (Nos D1-D49).

CDS comments: Fig.9: objects M55 23 not identified.

Simbad objects: 110

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Number of rows : 110
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 M 42 HII 05 35 16.8 -05 23 15           ~ 4411 0
2 NAME Ori A MoC 05 38 -07.1           ~ 3187 0
3 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1498 0
4 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1227 1
5 NAME Pup A SNR 08 24 07 -42 59.8           ~ 636 1
6 NAME Vela SNR 08 34.0 -45 50           ~ 1331 2
7 NAME Vela-D Molecular Cloud MoC 08 39 -41.0           ~ 52 0
8 [MDE2007] MMS1 mm 08 45 33.40 -43 50 20.1           ~ 6 0
9 [MDE2007] MMS2 mm 08 45 34.80 -43 52 04.1           ~ 8 0
10 GAL 263.62-00.53 HII 08 45 34.9 -43 51 07           ~ 10 1
11 [EMS2007] VMR-D1 PoC 08 45 35.0 -43 52 02           ~ 1 0
12 IRAS 08438-4340 * 08 45 35.8 -43 51 02           G3III 27 1
13 [EMS2007] VMR-D2 PoC 08 45 36.0 -43 48 42           ~ 1 0
14 [MDE2007] MMS3 mm 08 45 40.10 -43 51 32.3           ~ 5 0
15 [EMS2007] VMR-D3 PoC 08 46 17.0 -43 56 12           ~ 1 0
16 [EMS2007] VMR-D4 PoC 08 46 31.0 -43 54 32           ~ 1 0
17 IRAS 08447-4309 cor 08 46 33.2 -43 21 01           ~ 5 0
18 IRAS 08448-4343 cor 08 46 33.8 -43 54 33           ~ 73 1
19 [MDE2007] MMS4 mm 08 46 34.60 -43 54 36.0           ~ 7 0
20 [EMS2007] VMR-D5 PoC 08 46 35.0 -43 54 32           ~ 1 0
21 AKARI-IRC-V1 J0846376-435216 Y*O 08 46 37.62 -43 52 16.6           ~ 4 0
22 [EMS2007] VMR-D6 PoC 08 46 49.0 -43 50 22           ~ 1 0
23 [MDE2007] MMS5 mm 08 46 49.40 -43 53 08.2           ~ 6 0
24 [MDE2007] MMS6 mm 08 46 52.30 -43 52 59.9           ~ 3 0
25 [EMS2007] VMR-D7 PoC 08 46 54.0 -43 54 32           ~ 1 0
26 HD 75211 SB* 08 47 01.5921294816 -44 04 28.848481212 7.35 7.90 7.50 8.28   O8.5II((f)) 99 0
27 IRAS 08453-4335 IR 08 47 08.4 -43 46 53           ~ 2 0
28 IRAS 08454-4307 mul 08 47 14.39 -43 18 26.0           ~ 3 0
29 [EMS2007] VMR-D9 PoC 08 47 26.0 -43 52 52           ~ 1 0
30 [EMS2007] VMR-D8 PoC 08 47 26.0 -43 48 42           ~ 1 0
31 [EMS2007] VMR-D10 PoC 08 47 31.0 -43 52 52           ~ 1 0
32 [EMS2007] VMR-D13 PoC 08 47 45.0 -43 50 22           ~ 1 0
33 [EMS2007] VMR-D12 PoC 08 47 45.0 -43 47 02           ~ 1 0
34 IRAS 08459-4338 IR 08 47 45.3 -43 50 01           ~ 3 0
35 [EMS2007] VMR-D14 PoC 08 47 50.0 -43 47 52           ~ 1 0
36 IRAS 08461-4314 IR 08 47 52.9 -43 25 46           ~ 2 0
37 [EMS2007] VMR-D15 PoC 08 47 54.0 -43 27 52           ~ 1 0
38 [MDE2007] MMS7 mm 08 47 58.80 -43 39 47.9           ~ 4 0
39 2MASX J08475887-4339320 PoC 08 47 58.876 -43 39 32.10           ~ 1 0
40 [EMS2007] VMR-D18 PoC 08 47 59.0 -43 20 22           ~ 1 0
41 [EMS2007] VMR-D19 PoC 08 48 03.0 -43 51 12           ~ 1 0
42 IRAS 08463-4343 cor 08 48 05.4 -43 54 15           ~ 6 0
43 [EMS2007] VMR-D20 PoC 08 48 13.0 -43 47 02           ~ 1 0
44 [EMS2007] VMR-D21 PoC 08 48 13.0 -43 22 52           ~ 1 0
45 IRAS 08465-4320 FIR 08 48 16.8 -43 31 59           ~ 2 0
46 [EMS2007] VMR-D23 PoC 08 48 17.0 -43 26 12           ~ 1 0
47 [EMS2007] VMR-D22 PoC 08 48 17.0 -43 17 52           ~ 1 0
48 [EMS2007] VMR-D24 PoC 08 48 27.0 -43 41 12           ~ 1 0
49 [EMS2007] VMR-D26 PoC 08 48 31.0 -43 25 22           ~ 1 0
50 [EMS2007] VMR-D25 PoC 08 48 31.0 -43 22 02           ~ 1 0
51 PN K 2-15 HII 08 48 39.0553841664 -42 53 54.005736984   12.86 12.01 11.72 10.79 B0V 67 2
52 [MDE2007] MMS8 mm 08 48 39.40 -43 31 23.9           ~ 3 0
53 IRAS 08468-4345 IR 08 48 39.6 -43 57 07           ~ 2 0
54 IRAS 08468-4330 IR 08 48 39.6 -43 41 18           ~ 3 0
55 [EMS2007] VMR-D28 PoC 08 48 40.0 -43 29 32           ~ 1 0
56 [EMS2007] VMR-D29 PoC 08 48 40.0 -43 17 52           ~ 1 0
57 [MDE2007] MMS9 mm 08 48 43.00 -43 31 48.0           ~ 5 0
58 IRAS 08470-4321 cor 08 48 48.2 -43 32 25           ~ 47 0
59 [MDE2007] MMS12 mm 08 48 49.00 -43 32 28.0           ~ 6 0
60 [EMS2007] VMR-D30 PoC 08 48 50.0 -43 29 32           ~ 1 0
61 [MDE2007] MMS14 mm 08 48 51.10 -43 31 08.1           ~ 5 0
62 IRAS 08471-4346 FIR 08 48 52.5 -43 57 58           ~ 2 0
63 [MDE2007] MMS15 mm 08 48 52.60 -43 30 28.1           ~ 3 0
64 [MDE2007] MMS16 mm 08 48 53.30 -43 31 00.1           ~ 6 0
65 [EMS2007] VMR-D31 PoC 08 48 54.0 -43 15 22           ~ 1 0
66 [MDE2007] MMS17 mm 08 48 57.80 -43 38 28.0           ~ 6 0
67 IRAS 08472-4326A cor 08 49 02.9 -43 38 03           ~ 6 0
68 [EMS2007] VMR-D33 PoC 08 49 03.0 -43 32 52           ~ 1 0
69 [MDE2007] MMS18 mm 08 49 03.60 -43 38 12.1           ~ 4 0
70 [MDE2007] MMS19 mm 08 49 08.90 -43 35 48.1           ~ 4 0
71 [MDE2007] MMS20 mm 08 49 11.80 -43 35 24.0           ~ 4 0
72 [EMS2007] VMR-D35 PoC 08 49 12.0 -43 22 02           ~ 1 0
73 [EMS2007] VMR-D36 PoC 08 49 13.0 -43 36 12           ~ 1 0
74 [EMS2007] VMR-D37 PoC 08 49 13.0 -43 36 12           ~ 1 0
75 [MDE2007] MMS21 mm 08 49 13.20 -43 36 28.1           ~ 6 0
76 IRAS 08474-4325 cor 08 49 13.272 -43 36 29.60           ~ 8 0
77 IRAS 08475-4352 FIR 08 49 17.7 -44 04 08           ~ 2 0
78 [EMS2007] VMR-D38 PoC 08 49 22.0 -44 00 22           ~ 1 0
79 [EMS2007] VMR-D39 PoC 08 49 22.0 -43 58 42           ~ 1 0
80 IRAS 08476-4306 cor 08 49 25.9 -43 17 10           ~ 28 0
81 [EMS2007] VMR-D40 PoC 08 49 26.0 -43 22 02           ~ 1 0
82 [EMS2007] VMR-D41 PoC 08 49 26.0 -43 17 02           ~ 1 0
83 [EMS2007] VMR-D42 PoC 08 49 26.0 -43 17 02           ~ 1 0
84 [EMS2007] VMR-D43 PoC 08 49 27.0 -44 10 22           ~ 1 0
85 [MDE2007] MMS22 mm 08 49 27.40 -43 17 08.2           ~ 5 0
86 [MDE2007] MMS25 mm 08 49 31.00 -44 10 44.1           ~ 3 0
87 [EMS2007] VMR-D45 PoC 08 49 31.0 -44 07 52           ~ 1 0
88 [EMS2007] VMR-D44 PoC 08 49 31.0 -43 20 22           ~ 1 0
89 [MDE2007] MMS24 mm 08 49 31.00 -43 17 08.2           ~ 3 0
90 IRAS 08477-4359 cor 08 49 32.3 -44 10 46           ~ 21 0
91 IRAS 08478-4303 * 08 49 32.5419940440 -43 14 45.837357324   15.424 14.258 13.886   ~ 3 0
92 [MDE2007] MMS26 mm 08 49 33.80 -44 10 59.9           ~ 5 0
93 IRAS 08478-4403 IR 08 49 34.1 -44 14 54           ~ 3 0
94 [MDE2007] MMS27 mm 08 49 34.60 -44 11 56.0           ~ 4 0
95 IRAS 08479-4311 Y*O 08 49 52.0773457272 -43 22 43.481769564           ~ 5 0
96 [EMS2007] VMR-D47 PoC 08 49 59.0 -44 00 22           ~ 1 0
97 CD-44 4865 * 08 50 02.2858329192 -44 34 39.926878500 9.88 10.16 9.63 9.67   B0III 57 0
98 [EMS2007] VMR-D48 PoC 08 50 03.0 -43 22 52           ~ 1 0
99 [MDE2007] MMS28 mm 08 50 09.40 -43 16 27.8           ~ 4 0
100 IRAS 08483-4305 IR 08 50 09.6 -43 16 42           ~ 3 0
101 IRAS 08484-4350 IR 08 50 13.3473343440 -44 01 30.382869864           ~ 2 0
102 CD-43 4690 * 08 50 52.0461382848 -43 50 22.900242948 10.05 10.48 9.79 9.68   O7.5 35 0
103 HD 75860 s*b 08 50 53.2419265893 -43 45 05.431137671 8.05 8.30 7.58 6.83 6.23 B1.5Iabp 96 0
104 GRS G264.60 +00.10 HII 08 51.5 -44 06           ~ 8 0
105 GUM 18 HII 08 51.8 -43 51           ~ 2 0
106 NAME Vela Jr SN SNR 08 52.0 -46 20           ~ 507 2
107 NAME VELA MOL RIDGE MoC 08 53 -45.0           ~ 178 0
108 NAME Vela C Cld 08 57 -43.2           ~ 193 0
109 NAME Vela B MoC 09 04 -48.0           ~ 30 0
110 NAME Vela A MoC 09 18 -48.0           ~ 31 0

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