astro.wikisort.org - GalaxyNGC 6584 is a globular cluster in the constellation Telescopium that lies near Theta Arae and is 45000 light-years distant.[2] It is an Oosterhoff type I cluster, and contains at least 69 variable stars, most of which are RR Lyrae variables: 46 stars were identified as RRab variables, 15 as RRc variables, 1 RRe variable, 4 eclipsing binaries and 3 long period variables.[4] NGC 6584 is about 4 kpc from the Galactic center and about 2.7 kpc from the Galactic plane.[5]
Globular cluster in the constellation Telescopium
NGC 6584 |
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Constellation | Telescopium |
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Right ascension | 18h 18m 37.60s[1] |
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Declination | –52° 12′ 56.8″[1] |
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Distance | 45000[2] |
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Apparent dimensions (V) | 7.9' |
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Metallicity | = −1.53±0.08[3] dex |
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Estimated age | 11.6±1.7 Gyr[3] |
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See also: Globular cluster, List of globular clusters |
As is typical for metal-poor globular clusters, NGC 6584 has an enhanced concentration of alpha elements relative to iron.[3]
References
- Goldsbury, Ryan; et al. (December 2010), "The ACS Survey of Galactic Globular Clusters. X. New Determinations of Centers for 65 Clusters", The Astronomical Journal, 140 (6): 1830–1837, arXiv:1008.2755, Bibcode:2010AJ....140.1830G, doi:10.1088/0004-6256/140/6/1830, S2CID 119183070.
- Streicher, Magda (August 2009). "A Spyglass Telescope" (PDF). Deepsky Delights. 68: 168. Bibcode:2009MNSSA..68..168S. Retrieved 29 September 2012.[permanent dead link]
- High-resolution Spectroscopic Abundances of Red Giant Branch Stars in NGC 6584 and NGC 7099
- Toddy, Joseph M.; Johnson, Elliott W.; Darragh, Andrew N.; Murphy, Brian W. (2012). "New Variable Stars in the Globular Cluster NGC 6584". Journal of the Southeastern Association for Research in Astronomy. 6: 63–71. arXiv:1205.1034. Bibcode:2012JSARA...6...63T.
- "Physical Parameters of Galactic Globular Clusters" by S. Djorgovski
External links
Media related to NGC 6584 at Wikimedia Commons
На других языках
[de] NGC 6584
NGC 6584 ist die Bezeichnung eines 43.700 Lichtjahre entfernten Kugelsternhaufen im Sternbild Teleskop. Das Objekt wurde am 5. Juni 1826 von James Dunlop entdeckt.[3]
- [en] NGC 6584
[ru] NGC 6584
NGC 6584 (другие обозначения — GCL 92, ESO 229-SC14) — шаровое скопление в созвездии Телескоп.
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