| NGC 6834 | |
|---|---|
 | |
| Observation data (J2000.0 epoch) | |
| Right ascension | 19 52 12.5 |
| Declination | +29° 24′ 29″ |
| Distance | 10,850 ly (3,326.7 pc) |
| Apparent magnitude (V) | 7.8 |
| Apparent dimensions (V) | 12′ |
| Physical characteristics | |
| Radius | 6.1 ly |
| Estimated age | 65±18 Myr |
| Other designations | NGC 6834, C 1950+292 |
| Associations | |
| Constellation | Cygnus |
| See also: Open cluster, List of open clusters | |
NGC 6834 is a young open cluster of stars located about 10,850 light years from the Sun in the constellation Cygnus. It was discovered on July 17, 1784, by Anglo-German astronomer William Herschel. The cluster has a visual magnitude of 7.8, which is dimmed by 2.1 magnitudes due to interstellar dust. Half the cluster members lie within an angular radius of 6′.
The Trumpler class of this cluster is II 2 m, indicating it is medium-rich in stars (m) with a moderate brightness range (2) and little central concentration of the stars (II). It has about 260 members and an age of approximately 65 million years, although estimates range from 50 to 80 million. A total of fifteen B-type variable stars have been detected in the cluster with four Be stars. Five of the cluster members show hydrogen alpha emission, including a γ Cas and two λ Eri variables.
References
- ^ Kerber, F.; et al. (September 2003). "Galactic Planetary Nebulae and their central stars. I. An accurate and homogeneous set of coordinates". Astronomy and Astrophysics. 408 (3): 1029–1035. Bibcode:2003A&A...408.1029K. doi:10.1051/0004-6361:20031046.
- ^ Cantat-Gaudin, T.; Anders, F. (January 2020). "Clusters and mirages: cataloguing stellar aggregates in the Milky Way". Astronomy & Astrophysics. 633: 22. arXiv:1911.07075. Bibcode:2020A&A...633A..99C. doi:10.1051/0004-6361/201936691. S2CID 208138247. A99.
- ^ Crossen, Craig; Rhemann, Gerald (2012). Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes. Springer Vienna. p. 68. ISBN 9783709106266.
- ^ Paunzen, E.; Netopil, M. (October 2006). "On the current status of open-cluster parameters". Monthly Notices of the Royal Astronomical Society. 371 (4): 1641–1647. arXiv:astro-ph/0607421. Bibcode:2006MNRAS.371.1641P. doi:10.1111/j.1365-2966.2006.10783.x. S2CID 15047964.
- "NGC 6834". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2022-01-07.
- ^ Mathew, Blesson; et al. (September 2014). "Optical/IR studies of Be stars in NGC 6834 with emphasis on two specific stars". Research in Astronomy and Astrophysics. 14 (9): 1173–1192. arXiv:1408.6658. Bibcode:2014RAA....14.1173M. doi:10.1088/1674-4527/14/9/008. S2CID 118378570. 1173-1192.
- Seligman, Courtney. "NGC Objects: NGC 6800 - 6849". Celestial Atlas. Retrieved 2022-01-08.
External links
Media related to NGC 6834 at Wikimedia Commons
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