IC 4499
IC 4499 is a loose globular cluster in the constellation Apus. It is located in the medium-far galactic halo.[1] Its apparent magnitude is 10.6,[2] and it is unusual because it appears to be 3-4 billion years younger than most other globular clusters in the Milky Way, as determined by its metallicity.[1]
References
- ^ a b Ferraro, I.; Ferraro, F.R.; Pecci, F. Fusi; Corsi, C.E.; Buonanno, R. (August 1995). "Young globular clusters in the Milky Way: IC 4499". Monthly Notices of the Royal Astronomical Society. 275 (4). SAO/NASA ADS Astronomy Abstract Service: 1057–1076. Bibcode:1995MNRAS.275.1057F. doi:10.1093/mnras/275.4.1057. Retrieved 22 April 2012.
{{cite journal}}: CS1 maint: unflagged free DOI (link) - ^ Frommert, Hartmut. "IC 4499". Students for the Exploration and Development of Space. Retrieved 22 April 2012.