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NGC 6193

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Open star cluster in the constellation Ara
NGC 6193
NGC 6193 and the nebula NGC 6188
Observation data (J2000 epoch)
Right ascension16 41 20
Declination−48° 45′ 48″
Distance3765.3 ly (1155 pc)
Apparent magnitude (V)5.2
Apparent dimensions (V)15′
Physical characteristics
Estimated age3 million years
Other designationsC 1637-486, Cl VDBH 195, OCl 975, Dun 413, Cr 310, ESO 226-SC020, Lund 716, h 3642, GC 4225, Caldwell 82
Associations
ConstellationAra
See also: Open cluster, List of open clusters

NGC 6193 (also known as Caldwell 82) is open cluster containing 27 stars in the constellation Ara, visible to the unaided eye. NGC 6193 lies at the center of the Ara OB1 association, which extends over a square degree. The cluster is associated with (and provides the energizing radiation for) neighboring regions of the nebulosity NGC 6188.

Cluster members

NGC 6193 is dominated by two O class multiple star systems within 10" of each other at the centre of the cluster, and a probable binary B0 giant. There are at least 20 other early B stars in the cluster, of 9th and 10th magnitude.

# Name Right ascension Declination mV Spectral type Comment
56 HD 150136 16 41 20.4149 −48° 45′ 46.644″ 5.62 O3−3.5 V + O5.5−6 V + O6.5−7 V Triple system
55 HD 150135 16 41 19.4537 −48° 45′ 47.585″ 6.89 O6.5V((f))z Binary
45 HD 150041 16 40 44.5820 −48° 45′ 22.214″ 7.06 B0III Variable
37 HD 149834 16 39 30.6704 −48° 51′ 02.511″ 9.17 B2V Binary?
59 CD-48 11080 16 41 36.3084 −48° 47′ 14.904″ 10.32 B4V
CD-48 11077 16 41 34.91 −48° 46′ 24.2″ 10.42 B2.5V
58 CD-48 11075 16 41 33.21 −48° 45′ 06.6″ 10.05 B2.5V
54 CD-48 11071 16 41 25.8569 −48° 45′ 14.265″ 8.45 B1V Binary
53 CD-48 11069 16 41 22.10 −48° 44′ 57″ 9.55 B1V
40 CD-48 11039 16 40 00.752 −48° 47′ 02.41″ 11.02 B3V
42 CD-48 11046 16 40 20.94 −48° 54′ 56.2″ 10.91 B2.5V
43 CD-48 11051 16 40 33.8837 −48° 53′ 16.19″ 10.39 B1h
CD-48 11060 16 40 43 −48° 48.8′ 10.71 B3V
47 CD-48 11061 16 40 53.26 −48° 45′ 35.2″ 11.21 B3.5V binary
50 CD-48 11062 16 41 02.49 −48° 53′ 49.7″ 11.42 B3.5V
52 CD-48 11065 16 41 08.48 −48° 52′ 21.6″ 11.06 B2.5V Wrongly cross-referenced to HD 150136 in Herbst
57 CD-48 11076 16 41 33.0589 −48° 33′ 59.651″ 10.10 B2V
63 CD-48 11082 16 41 6.3148 −48° 47′ 41.527″ 10.38 B2V
65 CD-48 11086 16 41 54.83 −48° 45′ 22.8″ 10.38 B2.5V
66 CD-48 11088 16 42 00.47 −48° 42′ 32.5″ 10.05 B2.5V
67 CD-48 11090 16 42 05.69 −48° 42′ 56.8″ 10.59 B2.5V

Image gallery

  • Star cluster NGC 6193 and nebula NGC 6188. Star cluster NGC 6193 and nebula NGC 6188.
  • Map showing the location of NGC 6193. Map showing the location of NGC 6193.

References

  1. Dunlop, Storm (2005). Atlas of the Night Sky. Collins. ISBN 978-0-00-717223-8.
  2. ^ Whiteoak, J. B.; Rodgers, A. W. (1963). "An association of O and B stars in Ara". Monthly Notices of the Royal Astronomical Society. 125 (2): 105. Bibcode:1963MNRAS.125..105W. doi:10.1093/mnras/125.2.105.
  3. ^ Sana, H.; Le Bouquin, J.-B.; Mahy, L.; Absil, O.; De Becker, M.; Gosset, E. (2013). "Three-dimensional orbits of the triple-O stellar system HD 150136". Astronomy & Astrophysics. 553: A131. arXiv:1304.3457. Bibcode:2013A&A...553A.131S. doi:10.1051/0004-6361/201321189. S2CID 41993530.
  4. ^ Sota, A.; Maíz Apellániz, J.; Morrell, N. I.; Barbá, R. H.; Walborn, N. R.; Gamen, R. C.; Arias, J. I.; Alfaro, E. J. (2014). "The Galactic O-Star Spectroscopic Survey (GOSSS). II. Bright Southern Stars". The Astrophysical Journal Supplement. 211 (1): 10. arXiv:1312.6222. Bibcode:2014ApJS..211...10S. doi:10.1088/0067-0049/211/1/10. S2CID 118847528.
  5. ^ Huang, W.; Gies, D. R. (2006). "Stellar Rotation in Young Clusters. I. Evolution of Projected Rotational Velocity Distributions". The Astrophysical Journal. 648 (1): 580–590. arXiv:astro-ph/0510450. Bibcode:2006ApJ...648..580H. doi:10.1086/505782. S2CID 13989261.
  6. ^ Arnal, Marcelo; Morrell, Nidia; Garcia, Beatriz; Levato, Hugo (1988). "The open cluster NGC 6193 - Another cluster rich in spectroscopic binaries". Astronomical Society of the Pacific. 100: 1076. Bibcode:1988PASP..100.1076A. doi:10.1086/132273.
  7. ^ Vazquez, R. A.; Feinstein, A. (1992). "Binary stars - Another effect contributing to the supposed abnormal extinction law in NGC 6193?". Astronomy and Astrophysics Supplement Series. 92: 863. Bibcode:1992A&AS...92..863V.
  8. ^ Herbst, W.; Havlen, R. J. (1977). "ARA OB1, NGC 6193 and ARA R1 - an optical study of a very young southern complex". Astronomy and Astrophysics Supplement Series. 30: 279. Bibcode:1977A&AS...30..279H.
  9. "Star cluster NGC 6193 and nebula NGC 6188". Retrieved 18 June 2015.
  10. Moffat, A. F. J.; Vogt, N. (1973). "Southern open stars clusters. III. UBV-Hbeta photometry of 28 clusters between galactic longitudes 297d and 353d". Astronomy and Astrophysics Supplement Series. 10: 135. Bibcode:1973A&AS...10..135M.

External links

Caldwell catalogue
List
See also
New General Catalogue 6001 to 6500
Constellation of Ara
Stars
Bayer
Variable
HR
HD
Other
Exoplanets
Star
clusters
NGC
Other
Nebulae
NGC
Other
Galaxies
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Category
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