2004A&A...424..887K


C.D.S. - SIMBAD4 rel 1.7 - 2020.02.20CET16:03:11

2004A&A...424..887K - Astronomy and Astrophysics, volume 424, 887-903 (2004/9-4)

Emission of CO, CI, and CII in W3Main.

KRAMER C., JAKOB H., MOOKERJEA B., SCHNEIDER N., BRUELL M. and STUTZKI J.

Abstract (from CDS):

We used the KOSMA 3m telescope to map the core 7'x5' of the Galactic massive star forming region W3Main in the two fine structure lines of atomic carbon and four mid-J transitions of CO and 13CO. The maps are centered on the luminous infrared source IRS5 for which we obtained ISO/LWS data comprising four high-J CO transitions, [CII], and [OI] at 63 and 145µm. In combination with a KAO map of integrated line intensities of [CII] (Howe et al., 1991ApJ...373..158H), this data set allows us to study the physical structure of the molecular cloud interface regions where the occurence of carbon is believed to change from C+ to C0, and to CO. The molecular gas in W3Main is warmed by the far ultraviolet (FUV) field created by more than a dozen OB stars. Detailed modelling shows that most of the observed line intensity ratios and absolute intensities are consistent with a clumpy photon dominated region (PDR) of a few hundred unresolved clumps per 0.84pc beam, filling between 3 and 9% of the volume, with a typical clump radius of 0.025pc (2.2''), and typical mass of 0.44M. The high-excitation lines of CO stem from a 100-200K layer, as do the [CI] lines. The bulk of the gas mass is however at lower temperatures.

Abstract Copyright:

Journal keyword(s): infrared: ISM - ISM: clouds - ISM: structure - ISM: abundances - galaxies: ISM - submillimeter

Simbad objects: 34

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Number of rows : 34

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 IC 63 HII 00 59 01.37 +60 53 17.8   13.33       ~ 80 1
2 NAME Polaris Cirrus Cloud MoC 01 52 29.6 +87 40 31           ~ 70 0
3 W 3j HII 02 25 27.32 +62 03 43.4           ~ 16 1
4 NAME W 3 SMS 3 smm 02 25 29.5 +62 06 01           ~ 11 0
5 W 3d HII 02 25 29.8 +62 06 27           ~ 35 0
6 [KSP2003] J022531.18+620624.5 HII 02 25 31.18 +62 06 24.5           O8V-B0.5V 94 1
7 NAME W 3 SMS 2 smm 02 25 31.2 +62 06 26           ~ 10 0
8 W 3h HII 02 25 32.00 +62 06 59.3           ~ 24 1
9 W 3g HII 02 25 32.04 +62 05 51.8           ~ 12 0
10 W 3e HII 02 25 35.1 +62 05 35           ~ 24 2
11 2MASS J02253778+6205522 * 02 25 37.79 +62 05 52.3           O5V-O7V 11 0
12 GAL 133.71+01.22 HII 02 25 38.1 +62 05 52           ~ 74 0
13 NAME W 3 SMS 1 smm 02 25 40.3 +62 05 53           ~ 10 0
14 W 3f HII 02 25 40.51 +62 05 40.7           O9V-B2V 34 0
15 NAME W3 IRS 5 Y*O 02 25 40.54 +62 05 51.4           B1 324 0
16 [WBN72] W 3 IRS 2a * 02 25 43.3308577441 +62 06 15.428915162     19.41 17.68 15.92 O8V-O9V 18 0
17 IC 1795 HII 02 25 43.5 +62 06 13           ~ 228 0
18 [KSP2003] J022544.26+620616.2 HII 02 25 44.26 +62 06 16.2           O6.5V-O7.5V 34 0
19 W 3k HII 02 25 44.9 +62 03 41           ~ 18 1
20 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 935 2
21 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 949 3
22 NAME Heart Nebula HII 02 32.7 +61 27           ~ 275 1
23 Ass Cas OB 6 As* 02 43 +61.3           ~ 116 0
24 IC 1848 OpC 02 51 06 +60 24.6   6.87 6.5     ~ 433 2
25 NGC 1333 SFR 03 28 55 +31 22.2   10.9       ~ 1200 1
26 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1060 1
27 NAME ORI MOL CLOUD MoC 05 56 -01.8           ~ 830 1
28 * eta Car Em* 10 45 03.5455050 -59 41 03.951060 6.37 7.034 6.21 4.90 4.41 OBepec 2171 0
29 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 2971 0
30 SH 2-106 HII 20 27 26.8 +37 22 49           ~ 407 2
31 18P 59 HII 20 32 31.2 +40 16 35           ~ 63 0
32 NGC 7023 BNe 21 01 36.9 +68 09 48   7.20       ~ 611 0
33 SH 2-140 OpC 22 19 07.8 +63 17 07           ~ 630 2
34 IRAS 22176+6303 SFR 22 19 17.978 +63 18 52.92           ~ 588 0

    Equat.    Gal    SGal    Ecl

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2020.02.20-16:03:11

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