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VII/191             Catalogue of Southern Dark Clouds     (Hartley+ 1986)

A catalogue of southern dark clouds Hartley M., Manchester R.N., Smith R.M., Tritton S.B., Goss W.M. <Astron. Astrophys. Suppl. Ser. 63, 27 (1986)> =1986A&AS...63...27H
ADC_Keywords: Nebulae Keywords: dark clouds - interstellar matter - star formation - Gould's Belt Description (Abstract): A catalogue of 1101 dark clouds has been compiled from visual inspection of ESO/SERC Southern J survey plates for declinations south of -33deg. This catalogue complements that of Lynds (1962ApJS....7....1L) which is based on the Palomar Sky Survey. Equatorial positions of accuracy 10 arcsec or better are listed for each cloud along with size (major axis x minor axis), density class and ESO/SERC field number. Galactic coordinates, derived from the equatorial positions, are used to define a name for each cloud. Complexes, consisting of several separately identifiable concentrations, are listed and identified by a trailing C on the name. The conclusions of Lynds, that clouds are concentrated along the galactic equator and toward the galactic centre, are reinforced. No clear connection with Gould's Belt is evident in the distribution of southern clouds. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 88 1101 The catalogue of Southern Dark Clouds (DCld)
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- DCld *[0-9.±] Dark Cloud name 11 A1 --- n_DCld [C] 'C' indicates a complex structure 13- 14 I2 h RAh Right Ascension 1950 (hours) 16- 17 I2 min RAm Right Ascension 1950 (minutes) 19- 20 I2 s RAs Right Ascension 1950 (seconds) 22 A1 --- DE- Declination 1950 (sign) 23- 24 I2 deg DEd Declination 1950 (degrees) 26- 29 F4.1 arcmin DEm Declination 1950 (minutes) 31- 35 F5.1 arcmin Size1 *Largest angular size 36 A1 --- --- [x] separator 37- 41 F5.1 arcmin Size2 *Second angular size 43 A1 --- Density *[ABC] Density class 45- 47 I3 --- Field Field or Plate number of ESO/SERC survey 49- 88 A40 --- Comments *Text of Comments
Note on DCld: The name is made from galactic longitude and latitude of the centroid. Note on Size1, Size2: In the case of some curved and elongated clouds, Size1 represents the total length of the cloud rather than the overall dimension; therefore the product of Size1 x Size2 approximates the area of the cloud. Note on Density: densities are represented by a 3-letter scale with A being the most dense and C the least dense. Statistics and comparison with Lynds (1962ApJS....7....1L) opacity classes: ------------------------------------------------------------ Density No. of Mean Size Median Size Lynds' Class Clouds (sq. arc min.) (sq. arc min.) opacity ------------------------------------------------------------ A 432 100 22 6 B 493 560 65 4 or 5 C 176 420 105 ≤ 3 ------------------------------------------------------------ All 1101 355 50 ------------------------------------------------------------ Note on Comments: the following abbreviations are used: CG = cometary globule DC = dark cloud RN = reflection nebula S-O = Sco-Oph complex which extends into the Sct region. Designations preceded by S refer to Sandqvist and Lindroos (1976A&A....53..179S) and Sandqvist (1977A&A....57..467S)
Nomenclature Notes: Sources from this catalogue are preferably designated ≪DCld LLL.l+BB.b≫ rather than ≪DC LLL.l+BB.b≫ See also: VII/7 : Lynds' Catalogue of Dark Nebulae (LDN) Historical Notes: * 21-Feb-1996: The catalogue was keypunched at CDS. * 13-Jul-2004: A few (keypunching) errors on names and positions corrected.
(End) James Marcout, Francois Ochsenbein [CDS] 21-Feb-1996
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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