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NGC 3293

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NGC 3293
NGC 3293 taken by the Wide Field Imager on the MPG/ESO 2.2-meter telescope
Observation data (J2000 epoch)
Right ascension10h 35m 24s[1]
Declination−58° 14′[1]
Distance8,400 ly (2,590 pc[2])
Apparent magnitude (V)4.7
Apparent dimensions (V)8.2′[3]
Physical characteristics
Mass1457[2] M☉
Radius13.2 ly[3]
Estimated age12 ± 3 Myr[2]
Other designationsCr 224
Associations
ConstellationCarina
See also: Open cluster, List of open clusters

NGC 3293 is an open cluster in the Carina constellation. It was discovered by Nicolas-Louis de Lacaille in 1751.[4] It consists of more than 100 stars brighter than 14th magnitude in a 10 arc minute field, the brightest of which are blue supergiants of apparent magnitude 6.5 and 6.7. There is also a 7th magnitude pulsating red supergiant, V361 Carinae.[5]

NGC 3293 is associated with the open cluster NGC 3324. Both are fairly young, at around 12 million years old. They show some degree of mass segregation, with more massive stars concentrated near their centers. Neither are dynamically relaxed.[2]

References

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  1. ^ a b Kharchenko, N. V.; Piskunov, A. E.; Schilbach, E.; Röser, S.; Scholz, R.-D. (2013). "Global survey of star clusters in the Milky Way. II. The catalogue of basic parameters". Astronomy & Astrophysics. 558: A53. arXiv:1308.5822. Bibcode:2013A&A...558A..53K. doi:10.1051/0004-6361/201322302. S2CID 118548517.
  2. ^ a b c d Bisht, D.; Zhu, Qingfeng; Yadav, R K S.; Ganesh, Shashikiran; Rangwal, Geeta; Durgapal, Alok; Sariya, Devesh P.; Jiang, Ing-Guey (2021). "Multicolour photometry and Gaia EDR3 astrometry of two couples of binary clusters (NGC 5617 and Trumpler 22) and (NGC 3293 and NGC 3324)". Monthly Notices of the Royal Astronomical Society. 503 (4): 5929–5947. arXiv:2103.04596. doi:10.1093/mnras/stab691.
  3. ^ a b Baume, G.; Vázquez, R. A.; Carraro, G.; Feinstein, A. (2003). "Photometric study of the young open cluster NGC 3293". Astronomy and Astrophysics. 402 (2): 531–540. arXiv:astro-ph/0301529. Bibcode:2003A&A...402..549B. doi:10.1051/0004-6361:20030223. S2CID 15795245.
  4. ^ Seligman, Courtney. "NGC Objects: NGC 3250 - 3299". cseligman.com. Retrieved 14 February 2019.
  5. ^ Dufton, P. L.; Smartt, S. J.; Lee, J. K.; Ryans, R. S. I.; Hunter, I.; Evans, C. J.; Herrero, A.; Trundle, C.; Lennon, D. J.; Irwin, M. J.; Kaufer, A. (2006). "The VLT-FLAMES survey of massive stars: Stellar parameters and rotational velocities in NGC 3293, NGC 4755 and NGC 6611". Astronomy and Astrophysics. 457 (1): 265–280. arXiv:astro-ph/0606409. Bibcode:2006A&A...457..265D. doi:10.1051/0004-6361:20065392. S2CID 15874925.
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