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The Uppsala General Catalogue of Galaxies (UGC) is a catalogue of 12,921 galaxies visible from the northern hemisphere. It was first published in 1973.[1]
![Dwarf galaxy UGC 1281.[2]](http://upload.wikimedia.org/wikipedia/commons/6/6d/A_slashing_smudge_across_the_sky.jpg)
The catalogue includes essentially all galaxies north of declination -02°30' and to a limiting diameter of 1.0 arcminute or to a limiting apparent magnitude of 14.5. The primary source of data is the blue prints of the Palomar Observatory Sky Survey (POSS). It also includes galaxies smaller than 1.0 arcminute in diameter but brighter than 14.5 magnitude from the Catalogue of Galaxies and of Clusters of Galaxies (CGCG).
The catalogue contains descriptions of the galaxies and their surrounding areas, plus conventional system classifications and position angles for flattened galaxies. Galaxy diameters are included and the classifications and descriptions are given in such a way as to provide as accurate an account as possible of the appearance of the galaxies on the prints. The accuracy of coordinates is only what is necessary for identifications purposes.
Addendum
There is an addendum to the catalogue called Uppsala General Catalogue Addendum which is abbreviated as UGCA.
See also
- Category:UGC objects
- Uppsala
- Uppsala Astronomical Observatory
- Royal Society of Sciences in Uppsala
References
- Peter Nilson. "The Uppsala General Catalogue of Galaxies". Retrieved 2011-01-30.
- "A slashing smudge across the sky". www.spacetelescope.org. ESA/Hubble. Retrieved 2 December 2014.
На других языках
[de] Uppsala General Catalogue
Der Uppsala General Catalogue (UGC) ist ein auf der Basis des Palomar Observatory Sky Survey erstellter Katalog von 12921 Galaxien, die von der nördlichen Erdhalbkugel aus sichtbar sind. Die Objekte sind nach Rektaszension geordnet und mit einer fortlaufenden Nummer bezeichnet. Der Katalog wurde von Peter Nilson an der Sternwarte von Uppsala erstellt und 1973 veröffentlicht.- [en] Uppsala General Catalogue
[es] Catálogo General Upsala
El Catálogo General Upsala (en inglés, Uppsala General Catalogue o UGC) es un catálogo publicado en 1973 que incluye 12.921 galaxias visibles desde el hemisferio norte. Principalmente con una magnitud inferior a 14,5 y un diámetro mayor a 1,0 minutos de arco.[ru] Общий каталог галактик Уппсала
Общий каталог галактик Уппсала (англ. The Uppsala General Catalogue of Galaxies или UGC) представляет собой каталог 12 921 галактик на небе северного полушария. Работа над каталогом проходила в Уппсальской астрономической обсерватории.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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