LYNGA (S8): Lynga open cluster catalog (19890825)
FILES:
lynga.s8 (1180 clusters)
lynga.s8n (notefile)
CONTENTS: Lynga Open Clusters - Kambah Australia version, 1989
DATASET: These files come in HyperSky dataset S-0, version 19890825 (part of the original basic dataset supplied with HyperSky) Availability on HyperSky CD-ROM: Vol. 1 (1993)
DESCRIPTION: The original catalog source is a computer readable catalog of open cluster data (1981) by Gosta Lynga, Lund Observatory, Svanegatan 9, S-222 24 Lund, Sweden, distributed by the Stellar Data Centre, Observatoire de Strasbourg 11 Rue de L'Universite, F-67 000 Strasbourg, France.
The aim of the catalog is to give the salient data for all known open star clusters in our galaxy.
In the United States this catalog is distributed for professional use on magnetic tape (catalog number 7092) from the Astronomical Data Center, at NASA's National Space Science Data Center in Greenbelt, Maryland.
The HyperSky datafile is extracted from a floppy disk version of the NASA catalog, from David Herald of Kambah Observatory, Australia. Some identification information from the NASA 1987 version of the catalog was merged into the floppy disk data. The original catalog contained 1188 objects. Of these 8 were deleted from the HyperSky datafile because they were either duplicate entries or were not really open clusters; one, for example, was identified in the 1987 notes as actually being a galaxy.
DATA: The HyperSky datafile contains the following data from the catalog:
MAG: the total cluster magnitude.
IDENTIFICATION: the cluster notation according to the system accepted by the International Astronomical Union in Montreal 1979, derived from the equinox 1950 RA and Dec of the cluster.
COMMENTS: The comment line contains the following information, provided if available for each cluster:
* traditional name or sequence number
* angular diameter
* cluster distance
NOTEFILE: The notefile contains the following information, provided if available for each cluster:
* OCL - open cluster number
* additional names and identifications
* Trumpler concentration, brightness and richness classes.
HIGHLIGHTS:
Since open clusters closely follow the plane of the Milky Way, use of this data file will clearly mark the path of the Milky Way around the sky.