NGC 6352

Short description: Globular cluster in the constellation Ara

NGC 6352

Observation data (J2000 epoch)
Class| XI:[1]
Constellation| Ara
Right ascension|  17h 25m 29.11s[2]
Declination| –48° 25′ 19.8″[2]
Distance| 18.3 kly (5.6 kpc)[3]
Apparent magnitude (V)| +7.8[4]
Apparent dimensions (V)| 7.1′[5]
Physical characteristics
Mass| 3.7×104[6] M☉
Tidal radius| 10.5″[7]
Metallicity| [Fe/H] = –0.70[8] dex
Estimated age| 12.67 Gyr[8]
Other designations| Caldwell 81, Cr 328, NGC 6352[9]
See also: Globular cluster, List of globular clusters

NGC 6352 (also known as Caldwell 81) is a globular cluster of stars in the southern constellation of Ara, located approximately 18.3 kly[3] from the Sun. It was discovered by Scottish astronomer James Dunlop on May 14, 1826.[10] The cluster has a Shapley–Sawyer Concentration Class of XI:.[1] A telescope with a 15 cm (5.9 in) aperture is required to resolve the stars within this loose cluster.[4]

This cluster is about 12.67[8] billion years old with two distinct stellar populations; the second generation is only around 10 million years younger than the first.[3] It lies approximately 13 kly (4 kpc) from the Galactic Center and 1.6 kly (0.5 kpc) from the galactic plane.[11] The orbital motion of this cluster through the Milky Way suggests it is a member of the bulge or disk population.[12] It is relatively metal-rich for an object of this class,[3] having a metallicity of –0.70.[8] The core radius is 49.8″[3] and the tidal radius is 10.5″.[7]

## References

1. ↑ 1.0 1.1 Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin 849 (849): 11–14, Bibcode: 1927BHarO.849...11S.
2. ↑ 2.0 2.1 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, doi:10.1088/0004-6256/140/6/1830, Bibcode: 2010AJ....140.1830G.
3. ↑ 3.0 3.1 3.2 3.3 3.4 Libralato, Mattia et al. (March 2019), "The Hubble Space Telescope UV Legacy Survey of Galactic Globular Clusters. XVIII. Proper-motion Kinematics of Multiple Stellar Populations in the Core Regions of NGC 6352", The Astrophysical Journal 873 (2): 12, doi:10.3847/1538-4357/ab0551, 109, Bibcode: 2019ApJ...873..109L.
4. ↑ 4.0 4.1 Dunlop, Storm (2005). Atlas of the Night Sky. HarperCollins. ISBN 978-0-00-717223-8. https://archive.org/details/collinsatlasofni0000dunl.
5. ↑ O'Meara, Stephen James (2002). Deep Sky Companions: The Caldwell Objects. Cambridge University Press. p. 324. ISBN 0-521-82796-5.
6. ↑ Marks, Michael; Kroupa, Pavel (August 2010), "Initial conditions for globular clusters and assembly of the old globular cluster population of the Milky Way", Monthly Notices of the Royal Astronomical Society 406 (3): 2000–2012, doi:10.1111/j.1365-2966.2010.16813.x, Bibcode: 2010MNRAS.406.2000M. Mass is from MPD on Table 1.
7. ↑ 7.0 7.1 Johnston, H. M. et al. (May 1996), "ROSAT observations of ten globular clusters with large core radii.", Astronomy and Astrophysics 309: 116–122, Bibcode: 1996A&A...309..116J.
8. ↑ 8.0 8.1 8.2 8.3 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, doi:10.1111/j.1365-2966.2010.16373.x, Bibcode: 2010MNRAS.404.1203F.
9. ↑ "NGC 6352". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+6352.
10. ↑ Seligman, Courtney. "New General Catalogue objects: NGC 6350 - 6399". https://cseligman.com/text/atlas/ngc63a.htm#6352.
11. ↑ Fullton, L. K. et al. (August 1995), "A VIC Color-Magnitude Diagram of the Globular Cluster NGC 6352 From Hubble Space Telescope Planetary Camera Observations", Astronomical Journal 110: 652, doi:10.1086/117552, Bibcode: 1995AJ....110..652F.
12. ↑ Wagner-Kaiser, R. et al. (July 2016). "Bayesian Analysis of Two Stellar Populations in Galactic Globular Clusters. II. NGC 5024, NGC 5272, and NGC 6352". The Astrophysical Journal 826 (1): 18. doi:10.3847/0004-637X/826/1/42. 42. Bibcode: 2016ApJ...826...42W.

## External links

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Astronomical catalogs

NGC|

* Astronomy:NGC 6347
* Astronomy:NGC 6348
* Astronomy:NGC 6349
* Astronomy:NGC 6350
* Astronomy:NGC 6351
* NGC 6352
* Astronomy:NGC 6353
* Astronomy:NGC 6354
* Astronomy:NGC 6355
* Astronomy:NGC 6356
* Astronomy:NGC 6357

Collinder|

* Collinder 324
* Collinder 325
* Collinder 326
* Collinder 327
* Collinder 328
* Collinder 329
* Collinder 330
* Collinder 331
* Collinder 332

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Caldwell catalogue

List|

* C1
* C2
* C3
* C4
* C5
* C6
* C7
* C8
* C9
* C10
* C11
* C12
* C13
* C14
* C15
* C16
* C17
* C18
* C19
* C20
* C21
* C22
* C23
* C24
* C25
* C26
* C27
* C28
* C29
* C30
* C31
* C32
* C33
* C34
* C35
* C36
* C37
* C38
* C39
* C40
* C41
* C42
* C43
* C44
* C45
* C46
* C47
* C48
* C49
* C50
* C51
* C52
* C53
* C54
* C55
* C56
* C57
* C58
* C59
* C60
* C61
* C62
* C63
* C64
* C65
* C66
* C67
* C68
* C69
* C70
* C71
* C72
* C73
* C74
* C75
* C76
* C77
* C78
* C79
* C80
* C81
* C82
* C83
* C84
* C85
* C86
* C87
* C88
* C89
* C90
* C91
* C92
* C93
* C94
* C95
* C96
* C97
* C98
* C99
* C100
* C101
* C102
* C103
* C104
* C105
* C106
* C107
* C108
* C109

See also|

* Messier Catalogue
* Catalogue of Nebulae and Clusters of Stars
* New General Catalogue
* Index Catalogue
* Revised New General Catalogue
* Herschel 400 Catalogue

* Caldwell catalogue
* Category:Caldwell objects Astronomy
* Commons:Caldwell objects

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Ara constellation

Stars
(list)|

| Bayer|

* α (Choo/Tchou)
* β
* γ
* δ
* ε1
* ε2
* ζ (Tseen Yin)
* η
* θ
* ι
* κ
* λ
* μ (Cervantes)
* ν2
* π
* ρ1
* ρ2
* σ

|

Variable|

* R
* S
* RW
* AE
* AT
* BF
* OY
* V535
* V539 (ν1)
* V626
* V750
* V824
* V828
* V829
* V854
* V862
* V872

HR|

* 6167
* 6177
* 6187
* 6188
* 6197
* 6207
* 6215
* 6219
* 6236
* 6251
* 6253
* 6275
* 6297
* 6300
* 6312
* 6320
* 6323
* 6356
* 6368
* 6408
* 6423
* 6438
* 6440
* 6442
* 6447
* 6471
* 6475
* 6477
* 6478
* 6483
* 6487
* 6505
* 6513
* 6525
* 6530
* 6547
* 6572
* 6614
* 6640
* 6759

HD|

* 150897
* 152079
* 152220
* 153201
* 154672
* 154857
* 155951
* 156385
* 156411
* 158907
* 163071
* 164896

Gliese|

* Gliese 674
* Gliese 676

Other|

* 41 G.
* BPM 25114
* CPD -56 8032
* CXOU J164710.2−455216
* GX 339-4
* IRAS 16594-4656
* PSR J1644−4559
* SAO 244567
* SGR 1627-41
* 4U 1636-53
* Westerlund 1-26
* XTE J1650-500
* XTE J1701-462
* 2MASS J18082002−5104378

Star
clusters|

| Association|

* Ara OB1

|

Open|

* IC 4651
* NGC 6193
* NGC 6200
* NGC 6204
* NGC 6208
* NGC 6250
* NGC 6253
* Westerlund 1

Globular|

* ESO 280-SC06
* NGC 6352
* NGC 6362
* NGC 6397

Nebulae|

| Star-forming|

* NGC 6188

|

Planetary|

* IC 4642
* NGC 6326
* Stingray Nebula
* Tc 1

Galaxies|

| NGC|

* 6215
* 6215A
* 6221
* 6300
* 6305
* 6328

|

Other|

* PKS 1718-649

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