Lyons Groups of Galaxies

Lyons Groups of Galaxies

Lyons Groups of Galaxies (or LGG) — catalog of nearby groups of galaxies that was created from the sample of galaxies complete up to the limiting apparent magnitude Bo=14.0 with a recession velocity smaller than 5500km/s.Two methods were used in group construction: a percolation method derived from Huchra and Geller ( [http://simbad3.u-strasbg.fr/cgi-bin/cdsbib?1982ApJ...257..423H 1982ApJ...257..423H] ) and a hierarchical method initiated by Tully ( [http://simbad3.u-strasbg.fr/cgi-bin/cdsbib?1980ApJ...237..390T 1980ApJ...237..390T] ). The catalog is a synthesized version of the two results.

The LGG includes 485 groups and 3933 member galaxies.

External links

* [http://cdsarc.u-strasbg.fr/viz-bin/Cat?J/A%2bAS/100/47 LGG description at CDS]
* [http://webviz.u-strasbg.fr/viz-bin/VizieR-4?-out.max=999&-source=J/A%2BAS/100/47/table1 Full LGG list of records at CDS]
* [http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?1993A%26AS..100...47G ADS: General study of group membership. II - Determination of nearby groups]


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