Computer Science – Information Retrieval
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982nssdc8207.....w&link_type=abstract
NSSDC/WDC-A-R&S, Publ., No. 82-07, 14 p.
Computer Science
Information Retrieval
Astronomical Catalogs, Computer Compatible Tapes, Information Retrieval, Magellanic Clouds, Astrometry, Brightness Temperature, Magnetic Tapes, Tables (Data)
Scientific paper
This catalog contains 1273 proven or probable Large Magellanic Cloud (LMC) members, as found on deep objective-prism plates taken with the Curtis Schmidt telescope at Cerro Tololo Inter-American Observatory in Chile. The stars are generally brighter than about photographic magnitude 14. Approximate spectral types were determined by examination of the 580 A/mm objective-prism spectra; approximate 1975 positions were obtained by measuring relative to the 1975 coordinate grids on the Uppsala-Mount Stromlo Atlas of the LMC (Gascoigne and Westerlund 1961), and approximate photographic magnitudes were determined by averaging image density measures from the plates and image-diameter measures on the 'B' charts. The machine-readable version of the LMC survey catalog is described to enable users to read and process the tape file without problems or guesswork.
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