NGC 6934
| NGC 6934 | |
|---|---|
 | |
| Observation data (J2000 epoch) | |
| Class | VIII[1] |
| Constellation | Delphinus |
| Right ascension | 20h 34m 11.37s[2] |
| Declination | +07° 24′ 16.1″[2] |
| Distance | 52×103 ly (16 kpc)[3] |
| Apparent magnitude (V) | 8.83[4] |
| Apparent dimensions (V) | 8.4′[4] |
| Physical characteristics | |
| Mass | 2.95×105[5] M☉ |
| Metallicity | = –1.47[5] dex |
| Other designations | Caldwell 47 |
![{\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/4c0821bd80891e071c08e7c7ee8e022baedf522c)
NGC 6934 (also known as Caldwell 47) is a globular cluster[6] in the constellation Delphinus, about 50,000 light years distant.[4] It was discovered by William Herschel on 24 September 1785.[4]
References
- ^ Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin (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.
- ^ Hessels, J. W. T.; et al. (November 2007), "A 1.4 GHz Arecibo Survey for Pulsars in Globular Clusters", The Astrophysical Journal, 670 (1): 363–378, arXiv:0707.1602, Bibcode:2007ApJ...670..363H, doi:10.1086/521780.
- ^ a b c d "NGC 6934". SEDS. Retrieved 2010-10-09.
- ^ a b 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.
- ^ "SIMBAD Astronomical Object Database". Results for NGC 6934. Retrieved 2007-04-21.
External links
- NGC 6934 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- A Distant Backwater of the Milky Way — ESA/Hubble Picture of the Week
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