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J/A+A/430/549 C18O/C17O near rho Oph (Wouterloot+, 2005)
The interstellar C18O/C17O ratio in the solar neighbourhood: The ρ Ophiuchus cloud. Wouterloot J.G.A., Brand J., Henkel C. <Astron. Astrophys., 430, 549-560 (2005)> =2005A&A...430..549W
ADC_Keywords: Molecular clouds ; Carbon monoxide ; Interstellar medium ; Radio lines Keywords: ISM: abundances - ISM: clouds - ISM: molecules - Galaxy: abundances - radio lines: ISM - ISM: individual objects: rho Oph Abstract: Observations of up to ten carbon monoxide (CO and isotopomers) transitions are presented to study the interstellar C18O/C17O ratio towards 21 positions in the nearby (d∼140pc) low-mass star forming cloud ρ Oph. A map of the C18O J=1-0 distribution of parts of the cloud is also shown. Description: Between September 19 and October 5, 1987 we used the 15-m Swedish-ESO Submillimeter Telescope (SEST) to map C18O(1-0) towards a part of the ρ Oph cloud. Between January 26 and 31, 1999 we used two SIS receivers at the SEST to observe 12CO, 13CO, C18O, and C17O J=1-0 and 2-1 towards 21 positions in the ρ Oph cloud. On July 14, 2001, we observed C17O(3-2) towards eight of the 21 positions with the 15-m James Clerk Maxwell Telescope (JCMT) using frequency switching. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 93 21 Observed sources and rms values (K on a TA* scale) for individual transitions table3.dat 136 21 Observed C17O, C18O, and 13CO (1-0), (2-1) and (3-2) integrated line intensities and line ratios (i.e. not corrected for the frequency difference) spectra.dat 203 21 List of available spectra sp/* 0 182 Individual spectra
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Pos [1,21] Position number 4- 5 I2 h RAh Right ascension (1950) 7- 8 I2 min RAm Right ascension (1950) 10- 13 F4.1 s RAs Right ascension (1950) 15 A1 --- DE- Declination sign (1950) 16- 17 I2 deg DEd Declination (1950) 19- 20 I2 arcmin DEm Declination (1950) 22- 23 I2 arcsec DEs Declination (1950) 25- 30 F6.2 arcmin ORA Offset in right ascension (1) 32- 37 F6.2 arcmin ODE Offset in declination (1) 39- 44 F6.4 --- rmsC17O(1-0) rms of C17O(1-0) transition, 112.36GHz 46- 50 F5.3 --- rmsC17O(2-1) rms of C17O(2-1) transition, 224.71GHz 52- 56 F5.3 --- rmsC17O(3-2) ? rms of C17O(3-2) transition, 337.08GHz 58- 62 F5.3 --- rmsC18O(1-0) rms of C18O(1-0) transition, 109.78GHz 64- 68 F5.3 --- rmsC18O(2-1) rms of C18O(2-1) transition, 219.56GHz 70- 73 F4.2 --- rmsC18O(3-2) ? rms of C18O(3-2) transition, 329.33GHz 75- 78 F4.2 --- rms13CO(1-0) rms of 13CO(1-0) transition, 110.20GHz 80- 83 F4.2 --- rms13CO(2-1) rms of 13CO(2-1) transition, 220.40GHz 85- 88 F4.2 --- rms12CO(1-0) rms of 12CO(1-0) transition, 115,27GHz 90- 93 F4.2 --- rms12CO(2-1) rms of 12CO(2-1) transition, 230,54GHz
Note (1): Offset with respect to RA = 16 24 10, DE = -24 23 (1950)
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Pos [1,21] Position number 4- 7 F4.2 K.km/s IC17O(1-0) C17O(1-0) line integrated intensity 9- 12 F4.2 K.km/s IC17O(2-1) C17O(2-1) line integrated intensity 14- 17 F4.2 K.km/s IC17O(3-2) ? C17O(3-2) line integrated intensity 19- 22 F4.2 K.km/s IC18O(1-0) C18O(1-0) line integrated intensity 24- 28 F5.2 K.km/s IC18O(2-1) C18O(2-1) line integrated intensity 30- 33 F4.2 K.km/s IC18O(3-2) ? C18O(3-2) line integrated intensity 35- 39 F5.2 K.km/s I13CO(1-0) 13CO(1-0) line integrated intensity 41- 45 F5.2 K.km/s I13CO(2-1) 13CO(2-1) line integrated intensity 47- 50 F4.2 --- C18O/C17O(1-0) C18O/C17O (1-0) line ratio 52- 55 F4.2 --- C18O/C17O(2-1) C18O/C17O (2-1) line ratio 57- 60 F4.2 --- C18O/C17O(3-2) ? C18O/C17O(3-2) line ratio 62- 66 F5.2 --- 13CO/C18O(1-0) 13CO/C18O (1-0) line ratio 68- 71 F4.2 --- 13CO/C18O(2-1) 13CO/C18O (2-1) line ratio 73- 76 F4.2 K.km/s e_IC17O(1-0) rms uncertainty on IC17O(1-0) 78- 81 F4.2 K.km/s e_IC17O(2-1) rms uncertainty on IC17O(2-1) 83- 86 F4.2 K.km/s e_IC17O(3-2) ? rms uncertainty on IC17O(3-2) 88- 91 F4.2 K.km/s e_IC18O(1-0) rms uncertainty on IC18O(1-0) 93- 96 F4.2 K.km/s e_IC18O(2-1) ? rms uncertainty on IC18O(2-1) 98-101 F4.2 K.km/s e_IC18O(3-2) ? rms uncertainty on IC18O(3-2) 103-106 F4.2 K.km/s e_I13CO(1-0) rms uncertainty on I13CO(1-0) 108-111 F4.2 K.km/s e_I13CO(2-1) rms uncertainty on I13CO(2-1) 113-116 F4.2 --- e_C18O/C17O(1-0) rms uncertainty on C18O/C17O (1-0) 118-121 F4.2 --- e_C18O/C17O(2-1) rms uncertainty on C18O/C17O (2-1) 123-126 F4.2 --- e_C18O/C17O(3-2) ? rms uncertainty on C18O/C17O(3-2) 128-131 F4.2 --- e_13CO/C18O(1-0) rms uncertainty on 13CO/C18O (1-0) 133-136 F4.2 --- e_13CO/C18O(2-1) rms uncertainty on 13CO/C18O (2-1)
Byte-by-byte Description of file: spectra.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Pos [1,21] Position number 4- 5 I2 h RAh Right ascension (1950) 7- 8 I2 min RAm Right ascension (1950) 10- 13 F4.1 s RAs Right ascension (1950) 15 A1 --- DE- Declination sign (1950) 16- 17 I2 deg DEd Declination (1950) 19- 20 I2 arcmin DEm Declination (1950) 22- 23 I2 arcsec DEs Declination (1950) 25- 41 A17 --- C17O(1-0) File with C17O(1-0) spectrum in sp/ 43- 59 A17 --- C17O(2-1) File with C17O(2-1) spectrum in sp/ 61- 77 A17 --- C17O(3-2) File with C17O(3-2) spectrum in sp/ 79- 95 A17 --- C18O(1-0) File with C18O(1-0) spectrum in sp/ 97-113 A17 --- C18O(2-1) File with C18O(2-1) spectrum in sp/ 115-131 A17 --- C18O(3-2) File with C18O(3-2) spectrum in sp/ 133-149 A17 --- 12CO(1-0) File with 12CO(1-0) spectrum in sp/ 151-167 A17 --- 12CO(2-1) File with 12CO(2-1) spectrum in sp/ 169-185 A17 --- 13CO(1-0) File with 13CO(1-0) spectrum in sp/ 187-203 A17 --- 13CO(2-1) File with 13CO(2-1) spectrum in sp/
Acknowledgements: Jan Wouterloot, j.wouterloot(at)jach.hawaii.edu
(End) Patricia Vannier [CDS] 03-Feb-2005
| The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line |
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