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Contents

   



(Top)
  


1 Cluster members  




2 Image gallery  




3 References  




4 External links  













NGC 6193






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From Wikipedia, the free encyclopedia
  
(Redirected from Caldwell 82)
NGC 6193
NGC 6193 and the nebula NGC 6188
Observation data (J2000 epoch)
Right ascension16h41m20s
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, Caldwell82
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.[1] 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[edit]

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.

#[2] Name Right ascension Declination mV Spectral type Comment
56 HD 150136 16h41m 20.4149s −48° 45′ 46.644″ 5.62 O3−3.5 V + O5.5−6 V + O6.5−7 V[3] Triple system
55 HD 150135 16h41m 19.4537s −48° 45′ 47.585″ 6.89 O6.5V((f))z[4] Binary[5]
45 HD 150041 16h40m 44.5820s −48° 45′ 22.214″ 7.06 B0III Variable[6]
37 HD 149834 16h39m 30.6704s −48° 51′ 02.511″ 9.17 B2V Binary?[6]
59 CD-48 11080 16h41m 36.3084s −48° 47′ 14.904″ 10.32 B4V [6]
CD-48 11077 16h41m 34.91s −48° 46′ 24.2″ 10.42 B2.5V [6]
58 CD-48 11075 16h41m 33.21s −48° 45′ 06.6″ 10.05[7] B2.5V[5]
54 CD-48 11071 16h41m 25.8569s −48° 45′ 14.265″ 8.45 B1V Binary[6]
53 CD-48 11069 16h41m 22.10s −48° 44′ 57″ 9.55 B1V [6]
40 CD-48 11039 16h40m 00.752s −48° 47′ 02.41″ 11.02[8] B3V[5]
42 CD-48 11046 16h40m 20.94s −48° 54′ 56.2″ 10.91[8] B2.5V[5]
43 CD-48 11051 16h40m 33.8837s −48° 53′ 16.19″ 10.39 B1h [6]
CD-48 11060 16h40m43s −48° 48.8′ 10.71 B3V [6]
47 CD-48 11061 16h40m 53.26s −48° 45′ 35.2″ 11.21[8] B3.5V[5] binary[5]
50 CD-48 11062 16h41m 02.49s −48° 53′ 49.7″ 11.42[7] B3.5V[5]
52 CD-48 11065 16h41m 08.48s −48° 52′ 21.6″ 11.06[7] B2.5V[5] Wrongly cross-referenced to HD 150136 in Herbst[8]
57 CD-48 11076 16h41m 33.0589s −48° 33′ 59.651″ 10.10 B2V [6]
63 CD-48 11082 16h41m 6.3148s −48° 47′ 41.527″ 10.38 B2V [6]
65 CD-48 11086 16h41m 54.83s −48° 45′ 22.8″ 10.38 B2.5V [6]
66 CD-48 11088 16h42m 00.47s −48° 42′ 32.5″ 10.05 B2.5V [6]
67 CD-48 11090 16h42m 05.69s −48° 42′ 56.8″ 10.59 B2.5V [6]

Image gallery[edit]

References[edit]

  1. ^ Dunlop, Storm (2005). Atlas of the Night Sky. Collins. ISBN 978-0-00-717223-8.
  • ^ a b 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.
  • ^ a b 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.
  • ^ a b 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.
  • ^ a b c d e f g h i 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.
  • ^ a b c d e f g h i j k l m n 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.
  • ^ a b c d 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.
  • ^ a b c d e 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.
  • ^ "Star cluster NGC 6193 and nebula NGC 6188". Retrieved 18 June 2015.
  • ^ 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[edit]

    Wikimedia Commons has media related to NGC 6193.

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     ●Caldwell objects
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