NGC 4833
Template:Short description Script error: No such module "Infobox".Template:Template other
NGC 4833 is a globular cluster discovered by Abbe Lacaille during his 1751-1752 journey to South Africa, and catalogued in 1755.[1] It was subsequently observed and catalogued by James Dunlop and Sir John Herschel whose instruments could resolve it into individual stars.[2]
The globular cluster is situated in the very southerly constellation Musca[2] at a distance of 21,500 light years from Earth.[3] It is located near the Coalsack Nebula and is partially obscured by this dusty region of the galactic plane.[4] After corrections for the reddening by dust, evidence was obtained that it is in the order of 2 billion years older than globular clusters M5 or M92.[5]
This is a massive, metal-poor globular cluster that shows evidence for multiple generations of stars.[6] It is an old halo cluster of the Oosterhoff type II. The orbit of the cluster through the galaxy is very eccentric, with an eccentricity of 0.84 that carries it close to the Galactic Center. The cluster has likely lost a significant portion of its original mass due to interactions with the galactic bulge.[4]
A 2012 survey for variable stars identified six SX Phe, two eclipsing binaries (including a W UMa), and 19 RR Lyr variables.[7][8]
See also
References
<templatestyles src="Reflist/styles.css" />
- ↑ Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ a b Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
- ↑ Script error: No such module "citation/CS1".
Cite error: <ref> tag with name "hcob849_11" defined in <references> is not used in prior text.
Cite error: <ref> tag with name "aj140_6_1830" defined in <references> is not used in prior text.
Cite error: <ref> tag with name "mnras404_3_1203" defined in <references> is not used in prior text.
Cite error: <ref> tag with name "simbad" defined in <references> is not used in prior text.
<ref> tag with name "hstimage" defined in <references> is not used in prior text.Script error: No such module "Check for unknown parameters".
Further reading
<templatestyles src="Div col/styles.css"/>
- Script error: No such module "citation/CS1".
- Script error: No such module "citation/CS1".
- Script error: No such module "citation/CS1".
- Script error: No such module "citation/CS1".
External links
- Basic information and data
- Photographed by the Antilhue amateur astronomical observatory
- CCD Photometry of the Globular Cluster NGC 4833 and Extinction Near the Galactic Plane
- Position relative to nearby cluster NGC 4372
- Template:WikiSky
Template:Sky Template:Catalogs Template:Musca Template:Caldwell catalogue Template:Ngc50