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Дата изменения: Mon Dec 23 18:23:59 2013 Дата индексирования: Fri Feb 28 18:07:17 2014 Кодировка: Поисковые слова: trifid nebula |
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Compilation of Group membership |
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Below is a description of the fields of the table that can be accessed through the interfaces.
pgc number of the group. The pgc number indexes all the objects of the database and is sometime associated with the PGC name, it is intended for internal usage and should not be used to name objects in publications.
Designation of the association
The following group catalogues are in HyperLeda:
1000 |
Nilson P.; 1973, Uppsala General
Catalogue of Galaxies, Uppsala Astr. Obs. Annaler, Band 6 (membership defined from a visual estimation based on position and aspect) |
30001 |
Tully R.B.; 1988, Nearby
Galaxies Catalog, Cambridge University Press (membership defined from a hierarchical method) |
30002 |
Huchra J.P., Geller M.J.; 1982,
Astrophys. J., 257, 423 (membership defined from a percolation method) |
30003 |
Ramella M., Geller M.J., Huchra
J.; 1989, Astrophys. J., 344, 57 (membership defined from a percolation method) |
30004 |
Garcia A.M.; 1993, Astron.
Astrophys. Suppl. Ser., 100, 47 (membership defined from a method combining percolation and hierarchical algorithms) |
HyperLeda | Questions: prugniel@obs.univ-lyon1.fr |