NGC 6834

Open cluster in the constellation Cygnus

NGC 6834

Observation data (J2000.0 epoch)
Right ascension| 19h 52m 12.5s[1]
Declination| +29° 24′ 29″[1]
Distance| 10,850 ly (3,326.7 pc)[2]
Apparent magnitude (V)| 7.8[3]
Apparent dimensions (V)| 12′[2]
Physical characteristics
Radius| 6.1 ly
Estimated age| 65±18 Myr[4]
Other designations| NGC 6834, C 1950+292[5]
Associations
Constellation| Cygnus
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]

## References

[edit]

1. ^ a b 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.
2. ^ a b c d e 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.
3. ^ a b Crossen, Craig; Rhemann, Gerald (2012). Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes. Springer Vienna. p. 68\. ISBN 9783709106266.
4. ^ a b 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.
5. ^ "NGC 6834". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2022-01-07.
6. ^ a b c d 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.
7. ^ Seligman, Courtney. "NGC Objects: NGC 6800 - 6849". Celestial Atlas. Retrieved 2022-01-08.

## External links

[edit]

* Media related to NGC 6834 at Wikimedia Commons

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New General Catalogue 6001 to 7000

6001 to 6100|

* 6005
* 6008
* 6025
* 6027
* 6027a
* 6027b
* 6027c
* 6027d
* 6027e
* 6028/6046
* 6031
* 6039/6042
* 6040
* 6041
* 6043
* 6044
* 6045
* 6047
* 6050
* 6051
* 6052/6064
* 6053/6057
* 6054
* 6055
* 6056
* 6061
* 6067
* 6072
* 6078
* 6085
* 6086
* 6087
* 6090
* 6093

6101 to 6200|

* 6101
* 6104
* 6115
* 6118
* 6120
* 6121
* 6122
* 6124
* 6134
* 6139
* 6144
* 6152
* 6153
* 6158
* 6164
* 6166
* 6167
* 6169
* 6171
* 6181
* 6188
* 6193
* 6200

6201 to 6300|

* 6204
* 6205
* 6207
* 6208
* 6210
* 6212
* 6215
* 6217
* 6218
* 6221
* 6229
* 6231
* 6239
* 6240
* 6242
* 6248
* 6250
* 6251
* 6254
* 6256
* 6261
* 6263
* 6266
* 6273
* 6281
* 6284
* 6285
* 6286
* 6287
* 6293
* 6300

6301 to 6400|

* 6302
* 6304
* 6308
* 6309
* 6316
* 6325
* 6326
* 6328
* 6331
* 6333
* 6334
* 6337
* 6338
* 6340
* 6341
* 6342
* 6352
* 6355
* 6356
* 6357
* 6362
* 6365
* 6366
* 6369
* 6373
* 6374
* 6375
* 6380
* 6383
* 6384
* 6388
* 6394
* 6397
* 6400

6401 to 6500|

* 6401
* 6402
* 6405
* 6412
* 6426
* 6440
* 6441
* 6445
* 6453
* 6465
* 6475
* 6492
* 6494
* 6496

6501 to 6600|

* 6503
* 6505
* 6509
* 6514
* 6520
* 6522
* 6523
* 6526
* 6528
* 6530
* 6531
* 6533
* 6535
* 6537
* 6539
* 6540
* 6541
* 6543
* 6544
* 6553
* 6558
* 6559
* 6560
* 6563
* 6565
* 6566
* 6569
* 6570
* 6572
* 6578
* 6584
* 6589
* 6590

6601 to 6700|

* 6603
* 6604
* 6605
* 6611
* 6613
* 6618
* 6621
* 6622
* 6624
* 6626
* 6633
* 6637/6634
* 6638
* 6642
* 6644
* 6646
* 6649
* 6656
* 6670
* 6676
* 6681
* 6685
* 6694

6701 to 6800|

* 6705
* 6709
* 6712
* 6715
* 6717
* 6720
* 6723
* 6729
* 6738
* 6741
* 6742
* 6744
* 6745
* 6748
* 6751
* 6752/6777
* 6753
* 6754
* 6755
* 6756
* 6760
* 6774
* 6778/6785
* 6779
* 6781
* 6782
* 6786
* 6789
* 6790
* 6791

6801 to 6900|

* 6801
* 6809
* 6810
* 6811
* 6814
* 6818
* 6819
* 6820 and 6823
* 6822
* 6826
* 6834
* 6838
* 6845
* 6850
* 6853
* 6861
* 6863
* 6864
* 6866
* 6871
* 6872
* 6881
* 6884/6766
* 6885
* 6886
* 6888

6901 to 7000|

* 6902
* 6905
* 6907
* 6910
* 6913
* 6914
* 6925
* 6934
* 6939
* 6940
* 6946
* 6948
* 6951
* 6952
* 6956
* 6960, 6974, 6979, 6992, and 6995
* 6975/6976
* 6981
* 6984
* 6989
* 6994
* 7000

* Astronomical catalog
* List of NGC objects
* 6001–7000

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Constellation of Cygnus

* List of stars in Cygnus

Stars|

| Bayer|

* α (Deneb)
* β (Albireo)
* γ (Sadr)
* δ (Fawaris)
* ε (Aljanah)
* ζ
* η
* θ
* ι1
* ι2
* κ
* λ
* μ
* ν
* ξ
* o1
* o2
* ο3
* π1 (Azelfafage)
* π2
* ρ
* σ
* τ
* υ
* φ
* χ
* ψ
* ω1
* ω2
* P
* Q

|

Flamsteed|

* 2
* 4
* 8
* 9
* 15
* 16 (c)
* 17
* 20 (d)
* 22
* 23
* 26 (e)
* 27 (b1)
* 28 (b2)
* 29 (b3)
* 33
* 35
* 39
* 41
* 47
* 52
* 55
* 56
* 57
* 59 (f1)
* 61
* 63 (f2)
* 68 (A)
* 71 (g)
* 72
* 74
* 75

Variable|

* R
* T
* W
* X
* Y
* RW
* SS
* SU
* TT
* AZ
* BC
* BI
* CH
* KY
* V380
* V389
* V404
* V476
* V1027
* V1057
* V1143
* V1191
* V1334
* V1489
* V1500
* V1668
* V1794
* V1974
* V2214
* V2513

HR|

* 7633
* 7767
* 7912
* 8193

HD|

* 185269
* 185351
* 187123
* 188753
* 190655
* 191612
* 191806
* 197037

Gliese|

* 777
* 806
* 1245

Kepler|

* 2
* 3
* 5
* 6
* 11
* 15
* 16
* 17
* 18
* 22
* 23
* 27
* 28
* 29
* 31
* 32
* 33
* 34
* 35
* 36
* 39
* 40
* 41
* 42
* 44
* 45
* 47
* 48
* 51
* 56
* 61
* 63
* 66
* 67
* 68
* 69
* 70
* 78
* 80
* 84
* 86 (PH2)
* 87
* 89
* 107
* 167
* 182
* 186
* 223
* 289
* 371
* 385
* 411
* 419
* 432
* 445
* 452
* 737
* 1229
* 1520
* 1625
* 1649

WR|

* 133
* 134
* 135
* 136
* 137
* 138a
* 140
* 142
* 147
* 148
* 150

Other|

* AFGL 2591
* BD+40°4210
* BD+43 3654
* Cygnus OB2 #8A
* Cygnus OB2 #12
* Cygnus X-1
* Cygnus X-3
* G79.29+0.46
* G 208-44
* G 208-45
* GSC 03949-00967
* HAT-P-17
* KELT-20
* KIC 8462852
* KIC 9832227
* KIC 9970396
* KIC 11026764
* KIC 11145123
* KOI-5
* KOI-74
* KOI-81
* MWC 349
* N6946-BH1
* PSR J2032+4127
* SPECULOOS-3
* W75N(B)-VLA2
* WASP-48
* WISE J2000+3629
* Wolf 1069

Star
clusters|

| Association|

* Cygnus OB2
* Cygnus OB7
* Cygnus OB9

|

Open|

* Berkeley 86
* DR 6
* IC 5146
* Messier 29
* Messier 39
* NGC 6811
* NGC 6819
* NGC 6834
* NGC 6866
* NGC 6871
* NGC 6910
* NGC 7031

Molecular
clouds|

* Cygnus Molecular Nebula Complex
* Cygnus X (including DR 21)

Nebulae|

| Dark|

* Barnard 146
* Barnard 147
* IC 5146
* L1014

|

H II|

* NGC 6914
* North America Nebula
* Pelican Nebula
* Sadr Region
* Sh2-101
* Sh2-106

Planetary|

* Abell 78
* Egg Nebula
* IRAS 19475+3119
* IRAS 20324+4057
* Kronberger 61
* M1-92
* NGC 6826
* NGC 6881
* NGC 6884
* NGC 7008
* NGC 7026
* NGC 7027
* NGC 7048
* Soap Bubble Nebula

WR|

* Crescent Nebula

SNR|

* Cygnus Loop (including Veil Nebula)

Galaxies|

| NGC|

* 6801
* 6946
* 7013

|

Other|

* 3C 438
* 4C +48.48
* Cygnus A
* QSO B1954+513
* QSO B2005+403
* ZTF J203349.8+322901.1

Exoplanets|

| Kepler|

* 2b
* 3b
* 3c
* 5b
* 6b
* 11b
* 15b
* 16b
* 17b
* 22b
* 23b
* 28b
* 32b
* 33b
* 34b
* 36b
* 39b
* 40b
* 41b
* 47b
* 56b
* 61b
* 64b (PH1b)
* 68b
* 69b
* 70b
* 78b
* 87c
* 186b
* e
* f
* 371b
* c
* 409b
* 419b
* 432b
* 451b
* 452b
* 560b
* 737b
* 1229b
* 1520b
* 1625b
* 1652b
* 1658b
* 1649b
* c
* 1708b

|

Other|

* b3 Cygni b
* HD 185269 b
* HD 187123 b
* c
* HD 191806 b
* KELT-9b
* KELT-20b
* TrES-5b

Exomoons|

| Kepler|

* 1625b I
* 1708b I

|

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