NGC 6193
Appearance
NGC 6193 | |
---|---|
![]() NGC 6193 and the nebula NGC 6188 | |
Observation data (J2000 epoch) | |
Right ascension | 16h 41m 20s |
Declination | −48° 45′ 48″ |
Distance | 3765.3 ly (1155 pc) |
Apparent magnitude (V) | 5.2 |
Apparent dimensions (V) | 15′ |
Physical characteristics | |
Estimated age | 3 million years |
Other designations | C 1637-486, Cl VDBH 195, OCl 975, Dun 413, Cr 310, ESO 226-SC020, Lund 716, h 3642, GC 4225, Caldwell 82 |
Associations | |
Constellation | Ara |
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
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 | 16h 41m 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 | 16h 41m 19.4537s | −48° 45′ 47.585″ | 6.89 | O6.5V((f))z[4] | Binary[5] |
45 | HD 150041 | 16h 40m 44.5820s | −48° 45′ 22.214″ | 7.06 | B0III | Variable[6] |
37 | HD 149834 | 16h 39m 30.6704s | −48° 51′ 02.511″ | 9.17 | B2V | Binary?[6] |
59 | CD-48 11080 | 16h 41m 36.3084s | −48° 47′ 14.904″ | 10.32 | B4V | [6] |
CD-48 11077 | 16h 41m 34.91s | −48° 46′ 24.2″ | 10.42 | B2.5V | [6] | |
58 | CD-48 11075 | 16h 41m 33.21s | −48° 45′ 06.6″ | 10.05[7] | B2.5V[5] | |
54 | CD-48 11071 | 16h 41m 25.8569s | −48° 45′ 14.265″ | 8.45 | B1V | Binary[6] |
53 | CD-48 11069 | 16h 41m 22.10s | −48° 44′ 57″ | 9.55 | B1V | [6] |
40 | CD-48 11039 | 16h 40m 00.752s | −48° 47′ 02.41″ | 11.02[8] | B3V[5] | |
42 | CD-48 11046 | 16h 40m 20.94s | −48° 54′ 56.2″ | 10.91[8] | B2.5V[5] | |
43 | CD-48 11051 | 16h 40m 33.8837s | −48° 53′ 16.19″ | 10.39 | B1h | [6] |
CD-48 11060 | 16h 40m 43s | −48° 48.8′ | 10.71 | B3V | [6] | |
47 | CD-48 11061 | 16h 40m 53.26s | −48° 45′ 35.2″ | 11.21[8] | B3.5V[5] | binary[5] |
50 | CD-48 11062 | 16h 41m 02.49s | −48° 53′ 49.7″ | 11.42[7] | B3.5V[5] | |
52 | CD-48 11065 | 16h 41m 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 | 16h 41m 33.0589s | −48° 33′ 59.651″ | 10.10 | B2V | [6] |
63 | CD-48 11082 | 16h 41m 6.3148s | −48° 47′ 41.527″ | 10.38 | B2V | [6] |
65 | CD-48 11086 | 16h 41m 54.83s | −48° 45′ 22.8″ | 10.38 | B2.5V | [6] |
66 | CD-48 11088 | 16h 42m 00.47s | −48° 42′ 32.5″ | 10.05 | B2.5V | [6] |
67 | CD-48 11090 | 16h 42m 05.69s | −48° 42′ 56.8″ | 10.59 | B2.5V | [6] |
Image gallery
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Map showing the location of NGC 6193.
References
- ^ 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.
- ^ 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.
- ^ 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.
- ^ 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
![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)
Wikimedia Commons has media related to NGC 6193.
- NGC 6193 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- Universität Wien: Plot of stars in NGC 6193 (WEBDA)
- Universität Wien: IDs of stars in NGC 6193 (WEBDA)
- Encyclopedia of Science: Entry for NGC 6193
- "NGC 6193". SIMBAD. Centre de données astronomiques de Strasbourg.
- "HD 150136". SIMBAD. Centre de données astronomiques de Strasbourg.
- Aladin: Image of NGC 6193, centered on HD 150136