NGC 2249
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Globular cluster NGC 2249 |
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| Photo of the Hubble Space Telescope (WFPC2) | |
| AladinLite | |
| Constellation | Swordfish |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 06 h 25 m 49.6 s |
| declination | -68 ° 55 ′ 11 ″ |
| Appearance | |
| Brightness (visual) | 12.2 mag |
| Angular expansion | 1.7 |
| Physical data | |
| Affiliation | Large Magellanic Cloud |
| history | |
| discovery | John Herschel |
| Discovery date | December 23, 1834 |
| Catalog names | |
| NGC 2249 • ESO 57-SC82 • GC 1427 • | |
NGC 2249 is a globular cluster in the large Magellanic Cloud in the constellation Swordfish . It was discovered by the astronomer John Herschel on December 23, 1834 .
In various studies, the age of the star cluster is estimated at 275 million to a billion years, its metallicity at −0.4 to −0.47. The evaluation of an observation with the Hubble Space Telescope of the star cluster shows that it has 22,000 times the mass of the Sun and 46,000 times the luminosity .
Web links
Commons : NGC 2249 - collection of images, videos, and audio files
Individual evidence
- ↑ NASA / IPAC EXTRAGALACTIC DATABASE
- ↑ a b SEDS : NGC 2249
- ↑ Seligman
- ↑ LO Kerber, BX Santiago, E. Brocato: Physical parameters of 15 intermediate-age LMC clusters from modeling of HST color-magnitude diagrams , arxiv : astro-ph / 0610722 .
- ^ AD Mackey, GF Gilmore: Surface brightness profiles and structural parameters for 53 rich stellar clusters in the Large Magellanic Cloud , arxiv : astro-ph / 0209031 .