NGC 6834

NGC 6834
Observation data (J2000.0 epoch)
Right ascension19h 52m 12.5s[1]
Declination+29° 24′ 29″[1]
Distance10,850 ly (3,326.7 pc)[2]
Apparent magnitude (V)7.8[3]
Apparent dimensions (V)12′[2]
Physical characteristics
Radius6.1 ly
Estimated age65±18 Myr[4]
Other designationsNGC 6834, C 1950+292[5]
Associations
ConstellationCygnus
See also: Open cluster, List of open clusters

NGC 6834 is a young[6] open cluster of stars located about 10,850[2] light years from the Sun in the constellation Cygnus. It was discovered on July 17, 1784, by Anglo-German astronomer William Herschel.[7] The cluster has a visual magnitude of 7.8, which is dimmed by 2.1 magnitudes due to interstellar dust.[3] Half the cluster members lie within an angular radius of 6′.[2]

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).[6] It has about 260 members[2] and an age of approximately 65 million years,[4] although estimates range from 50 to 80 million.[6] 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.[6]

  1. ^ a b Cite error: The named reference Kerber_et_al_2003 was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference Cantat-Gaudin_Anders_2020 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference Crossen_Rhemann_2012 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference mnras371_4_1641 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  6. ^ a b c d Cite error: The named reference Mathew_et_al_2014 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Seligman was invoked but never defined (see the help page).