NGC 2249

from Wikipedia, the free encyclopedia
Globular cluster
NGC 2249
Photo of the Hubble Space Telescope (WFPC2)
Photo of the Hubble Space Telescope (WFPC2)
AladinLite
Constellation Swordfish
Position
equinoxJ2000.0 , epoch : J2000.0
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

  1. NASA / IPAC EXTRAGALACTIC DATABASE
  2. a b SEDS : NGC 2249
  3. Seligman
  4. 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 .
  5. ^ AD Mackey, GF Gilmore: Surface brightness profiles and structural parameters for 53 rich stellar clusters in the Large Magellanic Cloud , arxiv : astro-ph / 0209031 .