J/MNRAS/367/1609 RCW 106 Giant Molecular Cloud 13CO mapping (Bains+, 2006)
Molecular line mapping of the giant molecular cloud associated with RCW 106.
I. 13CO.
Bains I., Wong T., Cunningham M., Sparks P., Brisbin D., Calisse P.,
Dempsey J.T., Deragopian G., Ellingsen S., Fulton B., Herpin F., Jones P.,
Kouba Y., Kramer C., Ladd E.F., Longmore S.N., McEvoy J., Maller M.,
Minier V., Mookerjea B., Phillips C., Purcell C.R., Walsh A.,
Voronkov M.A., Burton M.G.
<Mon. Not. R. Astron. Soc., 367, 1609-1628 (2006)>
=2006MNRAS.367.1609B 2006MNRAS.367.1609B
ADC_Keywords: H II regions ; Molecular clouds ; X-ray sources ; Radio sources;
Infrared sources
Keywords: stars: formation - ISM: clouds - ISM: dust, extinction -
ISM: molecules - ISM: structure - radio lines: ISM
Abstract:
We present the first paper in a series detailing the results of 13CO
observations of a ∼1°2 region of the giant molecular cloud (GMC)
complex associated with the HII region RCW 106. The 13CO observations
are also the first stage of a multi-molecular line study of the same
region. These observations were amongst the first made using the new
on-the-fly mapping capability of the Australia Telescope National
Facility Mopra Telescope. In the configuration used, the instrument
provided a full width at half-maximum (FWHM) beam size of 33arcsec
and a velocity resolution of 0.17km/s. The gas emission takes the
form of a string of knots, oriented along an axis that extends from
the north-west (NW) to the south-east (SE) of the field of the
observations, and which is surrounded by a more extended, diffuse
emission. We analyse the 2D integrated 13CO emission using the
CLUMPFIND algorithm and identify 61 clumps. We compare the gas data in
the GMC with the dust data provided by 21um Midcourse Space Experiment
(MSX) and 1.2mm Swedish European Southern Observatory Submillimetre
Telescope (SEST) images that we both regridded to the cell spacing of
the Mopra data and smoothed to the same resolution.
Description:
The data were observed over ∼10 weeks during an intermittent observing
period that spanned from 2004 July to 2004 October.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 49 61 Properties of the 61 13CO clumps found by CLUMPFIND
table2.dat 31 32 Properties of associated mm-dust (SEST) and mid-IR
(MSX) clump fits with centre positions within a beam
size of that of a 13CO clump
table3.dat 61 105 Properties of the 105 mm-dust clumps found by CLUMPFIND
and associated 13CO measurements taken from the
corresponding regions on the unclipped 13CO giant
molecular cloud moment image
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See also:
V/114 : MSX6C Infrared Point Source Catalog (Egan+ 2003)
J/A+A/426/119 : RCW 106 Giant Molecular Cloud 1.2mm mapping (Mookerjea+ 2004)
J/MNRAS/441/256 : RCW 106 Giant Molecular Cloud NH3 emission (Lowe+, 2014)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- 13CO 13CO clump number ([BWC2006] 13CO NN)
4- 5 I2 h RAh Right ascension (J2000)
7- 8 I2 min RAm Right ascension (J2000)
10- 11 I2 s RAs Right ascension (J2000)
13 A1 --- DE- Declination sign (J2000)
14- 15 I2 deg DEd Declination (J2000)
17- 18 I2 arcmin DEm Declination (J2000)
20- 21 I2 arcsec DEs Declination (J2000)
23- 26 F4.1 10K.km/s Peak Peak 13CO(J=1-0) brightness (110.2GHz)
28- 31 F4.1 10+3K.km/s Sum 13CO brightness summed over all pixels
in clump
33- 35 F3.1 pc Rad 13CO clump radius (convolved with the beam
and for D=3.6kpc)
37- 40 F4.1 10+16cm-2 N(13CO) 13CO column density
42- 45 F4.1 10+3solMass Mass Total LTE molecular mass calculated from
the 13CO data
47- 49 A3 --- Assoc [S,M ] Association flag (1)
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Note (1): Associated mm-dust SEST (S) or mid-IR MSX (M) clump fit with a
centre position within a beam size of that of the 13CO clump fit.
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- 13CO Associated 13CO clump number
([BWC2006] 13CO NN)
4- 6 I3 --- mm ?=- 1.2-mm clump number ([BWC2006] mm NNN)
8- 9 I2 arcsec Offmm ?=- Angular offset of centre positions of
associated 13CO and mm-dust clumps
11- 14 F4.1 Jy Peakmm ?=- Peak flux density per beam area in
mm-dust clump
16- 19 F4.1 --- M13CO/Mmm ?=- Gas/mm-dust mass ratio for relevant
paired clumps
21- 22 I2 arcsec Off21um ?=- Angular offset of centre positions of
associated 13CO and mid-IR clump fit
24- 27 F4.1 10-5W/m2/sr Peak21um ?=- Peak flux density per beam area in
mid-IR clump fit
29- 31 F3.1 pc Rmir ?=- Radius of mid-IR fit (1)
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Note (1): Note that masses cannot be determined from the optically thick
21um data.
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 I3 --- mm mm-dust clump number ([BWC2006] mm NNN )
5- 6 I2 h RAh Right ascension (J2000)
8- 9 I2 min RAm Right ascension (J2000)
11- 12 I2 s RAs Right ascension (J2000)
14 A1 --- DE- Declination sign (J2000)
15- 16 I2 deg DEd Declination (J2000)
18- 19 I2 arcmin DEm Declination (J2000)
21- 22 I2 arcsec DEs Declination (J2000)
24- 26 F3.1 pc Rmm Clump radius (convolved with the beam and
for D=3.6kpc)
28- 32 F5.1 Jy Smm Total flux density in mm-dust clump
34- 37 F4.1 10+3solMass Mmm Mass of mm-dust clump
39- 42 F4.1 10K.km/s Peak Peak brightness measured from the 13CO
image in the region of the mm-dust clump fit
44- 47 F4.1 10+3K/km/s Sum Summed brightness measured from the 13CO
image over the same pixels as the
corresponding mm-dust clump fit
49- 52 F4.1 10+16cm-2 N(13CO) Column density of 13CO in this region
54- 57 F4.1 10+3solMass M13CO LTE mass measured from the 13CO
59- 61 F3.1 --- M13CO/Mmm Gas/dust mass ratio over the region of the
mm-dust clump fit
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History:
From electronic version of the journal
References:
Wong et al., Paper II 2008MNRAS.386.1069W 2008MNRAS.386.1069W
Lo et al., Paper III 2009MNRAS.395.1021L 2009MNRAS.395.1021L
Lowe et al., Paper IV 2014MNRAS.441..256L 2014MNRAS.441..256L, Cat. J/MNRAS/441/256
(End) Patricia Vannier [CDS] 13-Oct-2006