Lyon-Meudon Extragalactic Database
In today's world, Lyon-Meudon Extragalactic Database has been a topic of constant debate and analysis. From its origins to its relevance in modern society, Lyon-Meudon Extragalactic Database has captured the attention of academics, experts, and the general public. With a rich and varied history, Lyon-Meudon Extragalactic Database has played a fundamental role in the development of humanity, influencing different aspects of daily life. Over the years, its impact has been so significant that it continues to be an object of study and reflection in different areas. In this article, we will further explore the role of Lyon-Meudon Extragalactic Database and its importance in today's world.
The Lyon-Meudon Extragalactic Database (LEDA) was a database of galaxies, created in 1983 at the Lyon Observatory. Each galaxy had a number assigned to it, which is now known as its PGC number.[2] The Principal Galaxies Catalogue (PGC), published in 1989, was based on the Lyon-Meudon Extragalactic Database and contained cross-identifications for it.[3][2] LEDA was eventually merged with Hypercat to become HyperLEDA in 2000, itself also known as PGC2003.[4] LEDA originally contained information on more than 60 parameters for about 100,000 galaxies, and now contains information on over 3 million celestial objects, of which about 1.5 million are galaxies. The database allows astronomers around the world access to its information.
References
- ^ "LEDA 36252, a cosmic tadpole". Retrieved 29 June 2016.
- ^ a b "HYPERLEDA Help: Internal number: pgc". HyperLeda. Retrieved 19 January 2017.
- ^ Paturel, G.; Fouque, P.; Bottinelli, L.; Gouguenheim, L. (1989). "VizieR Online Data Catalog: Catalogue of Principal Galaxies (PGC)". VizieR On-line Data Catalog. Bibcode:1995yCat.7119....0P.
- ^ Paturel, G.; et al. (2003). "HYPERLEDA. I. Identification and designation of galaxies". Astronomy and Astrophysics. 412: 45–55. Bibcode:2003A&A...412...45P. doi:10.1051/0004-6361:20031411.
External links
- HYPERLEDA HyperLeda: A database for physics of galaxies
- LEDA data base LEDA Database Reference Page
 | This astronomical catalog article is a stub. You can help Wikipedia by expanding it. |
 | This galaxy-related article is a stub. You can help Wikipedia by expanding it. |