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J/ApJS/171/419               Catalog of LMC HI clouds               (Kim+, 2007)

A catalog of H I clouds in the Large Magellanic Cloud. Kim S., Rosolowsky E., Lee Y., Kim Y., Jung Y.-C., Dopita M.A., Elmegreen B.G., Freeman K.C., Sault R.J., Kesteven M., McConnell D., Chu Y.-H. <Astrophys. J. Suppl. Ser., 171, 419-446 (2007)> =2007ApJS..171..419K
ADC_Keywords: Radio sources ; Magellanic Clouds ; H I data Keywords: galaxies: individual (Large Magellanic Clouds) - galaxies: ISM - Magellanic Clouds - radio lines: galaxies Abstract: 21cm neutral hydrogen interferometric survey of the Large Magellanic Cloud (LMC) combined with the Parkes multibeam HI single-dish survey (2003MNRAS.339...87S) clearly shows that the HI gas is distributed in the form of clumps or clouds. The HI clouds and clumps have been identified using a thresholding method with three separate brightness temperature thresholds (Tb). Each catalog of HI cloud candidates shows a power-law relationship between the sizes and the velocity dispersions of the clouds roughly following the Larson law scaling σv∝R0.5, with steeper indices associated with dynamically hot regions. The clouds in each catalog have roughly constant virial parameters as a function of mass, suggesting that the clouds are all in roughly the same dynamical state, but the values of the virial parameter are significantly larger than unity, showing that turbulent motions dominate gravity in these clouds. The mass distribution of the clouds is a power law with differential indices between -1.6 and -2.0 for the three catalogs. In contrast, the distribution of mean surface densities is a lognormal distribution. Description: We cataloged the data from the combined surveys Kim et al., (2003ApJS..148..473K) of the Australia Telescope Compact Array (ATCA; Kim et al., 1998ApJ...503..674K) and the Parkes 64m single-dish telescope (Staveley-Smith et al., 2003MNRAS.339...87S). The spatial resolution of the map is 50"-55", corresponding to a physical resolution of 12-14pc at the distance of the LMC (Alves, 2004NewAR..48..659A). The observing band was centered on 1.419GHz. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 76 468 Catalog of HI clouds for the brightness temperature threshold of 16K table2.dat 76 406 Catalog of HI clouds for the brightness temperature threshold of 32K table3.dat 76 195 Catalog of HI clouds for the brightness temperature threshold of 64K
See also: J/other/PASAu/6.471 : Magellanic Clouds bridge region HI profiles (McGee+ 1986) Byte-by-byte Description of file: table[123].dat
Bytes Format Units Label Explanations
1- 3 I3 --- Seq Identification number (1) 5 I1 h RAh Hour of Right Ascension (J2000) 7- 8 I2 min RAm Minute of Right Ascension (J2000) 10- 14 F5.2 s RAs [0/60] Second of Right Ascension (J2000) 16 A1 --- DE- Sign of Declination (J2000) 17- 18 I2 deg DEd Degree of Declination (J2000) 20- 21 I2 arcmin DEm Arcminute of Declination (J2000) 23- 27 F5.2 arcsec DEs [0/60] Arcsecond of Declination (J2000) 29- 36 F8.3 pc Size Radius (size) of the cloud 38- 43 F6.2 km/s sigma Velocity dispersion 45- 50 F6.3 km/s e_sigma rms uncertainty on velocity dispersion 52- 63 F12.2 solMass Mass Mass of the cloud 65- 76 A12 --- Region Region name
Note (1): [KRL2007] 16K NNN for table 1 in Simbad, [KRL2007] 32K NNN for table 2 in Simbad, [KRL2007] 64K NNN for table 3 in Simbad.
History: From electronic version of the journal
(End) Emmanuelle Perret [CDS] 27-Apr-2009
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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