NGC 6541
| NGC 6541 | |
|---|---|
.jpg) NGC 6541, imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Class | III[1] |
| Constellation | Corona Australis |
| Right ascension | 18h 08m 02.36s[2] |
| Declination | –43° 42′ 53.6″[2] |
| Distance | 22.8 kly (7.0 kpc)[3] |
| Apparent magnitude (V) | 6.3 |
| Apparent dimensions (V) | 15′ |
| Physical characteristics | |
| Absolute magnitude | -8.52 |
| Mass | 5.72×105[4] M☉ |
| Metallicity | = –1.53[5] dex |
| Estimated age | 12.93 Gyr[5] |
| Other designations | Caldwell 78 |
![{\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/4c0821bd80891e071c08e7c7ee8e022baedf522c)
NGC 6541 (also known as Caldwell 78) is a globular cluster in the southern constellation of Corona Australis. It is estimated to be around 12.9 billion years old.[6]
The globular cluster was discovered by Niccolò Cacciatore at the Palermo Astronomical Observatory, Sicily, on March 19, 1826. It was independently found by James Dunlop on July 3, 1826.
References
- ^ Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin, 849 (849): 11–14, Bibcode:1927BHarO.849...11S.
- ^ a b 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.
- ^ Paust, Nathaniel E. Q.; et al. (February 2010), "The ACS Survey of Galactic Globular Clusters. VIII. Effects of Environment on Globular Cluster Global Mass Functions", The Astronomical Journal, 139 (2): 476–491, Bibcode:2010AJ....139..476P, doi:10.1088/0004-6256/139/2/476, hdl:2152/34371.
- ^ Boyles, J.; et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters", The Astrophysical Journal, 742 (1): 51, arXiv:1108.4402, Bibcode:2011ApJ...742...51B, doi:10.1088/0004-637X/742/1/51.
- ^ a b Forbes, Duncan A.; Bridges, Terry (May 2010), "Accreted versus in situ Milky Way globular clusters", Monthly Notices of the Royal Astronomical Society, 404 (3): 1203–1214, arXiv:1001.4289, Bibcode:2010MNRAS.404.1203F, doi:10.1111/j.1365-2966.2010.16373.x.
- ^ O'Meara, Stephen James (2011). Deep-Sky Companions: The Secret Deep. Cambridge, United Kingdom: Cambridge University Press. p. 322. ISBN 978-0521198769.
External links
Media related to NGC 6541 at Wikimedia Commons- NGC 6541 at SEDS NGC objects pages
- NGC 6541 at DOCdb (Deep Sky Observer's Companion)
- NGC 6541 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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