2003A&A...412..751B


Query : 2003A&A...412..751B

2003A&A...412..751B - Astronomy and Astrophysics, volume 412, 751-765 (2003/12-4)

The Trumpler 14 photodissociation region in the Carina Nebula.

BROOKS K.J., COX P., SCHNEIDER N., STOREY J.W.V., POGLITSCH A., GEIS N. and BRONFMAN L.

Abstract (from CDS):

We report the results of observations of the fine-structure emission lines [CII] 158µm and [OI] 63µm using FIFI on the Kuiper Airborne Observatory (KAO) and the Long Wavelength Spectrometer (LWS) on board ISO, towards the molecular cloud associated with the stellar cluster Trumpler 14 (Tr 14) in the Carina Nebula. These data are compared with selected CO and CS transitions obtained with the SEST as well as IRAS and MSX images to produce a detailed view of the morphology and the physical conditions prevailing in the photodissociation region (PDR) at the interface between the ionized gas and the molecular dust lane. The relative intensity distribution observed for the various tracers is consistent with the stratification expected for a molecular cloud seen edge-on and exposed to a radiation field of ≃ 104G0, which is dominated by the most massive stars of Tr 14. The grain photoelectric heating efficiency, ε, is estimated to be ≃5x10–3 and is comparable to other galactic PDRs. The molecular gas has a complicated velocity structure with a high velocity dispersion resulting from the impact of the stellar winds arising from Tr 14. There is evidence of small-scale clumping with a very low volume filling factor. Despite the rich concentration of massive O stars in Tr 14 we find that the parameters of the PDR are much less-extreme than those of the Orion and M 17 massive star-forming regions.

Abstract Copyright:

Journal keyword(s): stars: formation - ISM: lines and bands - ISM: clouds - ISM: individual objects: Carina nebula

Simbad objects: 30

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Number of rows : 30
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 IC 63 HII 00 59 01.37 +60 53 17.8   13.33       ~ 92 1
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 15990 1
3 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2136 1
4 NAME OMC-1 MoC 05 35 14 -05 22.4           ~ 1103 2
5 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1342 1
6 NAME Orion Bright Bar reg 05 35 22.30 -05 24 33.0           ~ 797 0
7 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1099 2
8 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1857 1
9 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1108 1
10 M 78 RNe 05 46 45.8 +00 04 45   8.0       ~ 360 0
11 [W94d] Car I-W Rad 10 43 21.4 -59 34 27           ~ 9 0
12 [W94d] Car I-E Rad 10 43 31.9 -59 35 28           ~ 8 0
13 Cl Trumpler 14 27 SB* 10 43 43.8836722848 -59 33 46.270987560 10.979 11.539 11.219 11.13 10.62 B1.5V 33 0
14 CD-58 3526 * 10 43 46.6855999968 -59 32 54.846500640 9.161 9.884 9.593 9.84 9.13 O6V((f))z 64 0
15 Cl Trumpler 14 21 SB* 10 43 48.6941418096 -59 33 24.351520752 10.467 11.122 10.774   10.106 O9V 44 0
16 Cl Trumpler 14 5 * 10 43 53.6203837896 -59 33 28.513930068 11.046 11.631 11.302 11.20 10.65 O9V 24 0
17 HD 93128 SB* 10 43 54.3957741024 -59 32 57.497266716 8.82 8.97 8.77 9.40 8.71 O3.5V((fc))z 92 1
18 Cl Trumpler 14 OpC 10 43 57 -59 33.2   5.70 5.5     ~ 467 0
19 HD 93129 ** 10 43 57.462360 -59 32 51.27000 6.26 7.840 7.884 7.839   O2If*+O3.5V((f)) 195 1
20 HD 93129B * 10 43 57.6453994104 -59 32 53.765064780   10.40 8.84     O3.5V((f)) 65 0
21 CPD-58 2625 * 10 44 00.9232424712 -59 35 45.798105192 10.425 11.050 10.670   9.958 O9.2V 42 1
22 HD 93160 SB* 10 44 07.2603347496 -59 34 30.623536272 7.27 7.99 7.60 8.46   O7III((f)) 107 0
23 HD 93161 SB* 10 44 08.972 -59 34 34.88 7.39 7.96 7.87     O8V+O9V+O6.5(f) 92 0
24 Cl Trumpler 16 OpC 10 45 01 -59 42.0   5.35 5.0     ~ 454 0
25 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 945 2
26 * eta Car Em* 10 45 03.5377808928 -59 41 04.051599720 6.37 7.03 6.48 4.90 4.41 OBepec 2326 0
27 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1543 0
28 W 49n HII 19 10 13.2 +09 06 12           ~ 434 3
29 SH 2-106 HII 20 27 26.8 +37 22 49           ~ 426 2
30 NGC 7023 RNe 21 01 36.9 +68 09 48           ~ 663 0

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2022.05.23-14:34:19

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