Misplaced Pages

NGC 6067
NGC 6067 Credit: DECaPS
Observation data (J2000 epoch)
Right ascension	16 13.2
Declination	−54° 13′
Distance	4,621 ly (1,417 pc)
Apparent magnitude (V)	5.6
Apparent dimensions (V)	12′
Physical characteristics
Mass	893 M☉
Estimated age	102 Myr
Other designations	Cr 298, Mel 140
Associations
Constellation	Norma
See also: Open cluster, List of open clusters

NGC 6067 is an open cluster in the constellation Norma. It is located to the north of Kappa Normae, with an angular diameter of 12′. Visible to the naked eye in dark skies, it is best observed with binoculars or a small telescope, and a 12-inch aperture telescope will reveal about 250 stars. Discovered by James Dunlop in 1826, it has been described by John Herschel as "a most superbly rich and large cluster" and by Stephen James O'Meara as "one of the sky's most stunning open star clusters". Its brightest stars have an apparent magnitude of around 8. There are 84 member stars with an apparent magnitude brighter than 12.

NGC 6067 is located in the Norma Star Cloud in the Norma Arm of the Milky Way and is 15 to 20 times as rich as the Pleiades and about the same age. It is thought to be around 102 million years old, and contain 893 solar masses. Two Cepheid variables, QZ Normae and V340 Normae, have been identified as members of the cluster, while a third nearby Cepheid—GU Normae—is considerably closer. Its period is only 3.5 days compared with the longer period of V340 Normae, indicating it is intrinsically less luminous (and hence closer), and its age has been estimated at 134 million years and hence too old to belong to the cluster. V340 Normae is a yellow supergiant of spectral type G0Ib that varies between magnitudes 8.26 and 8.60 over 11.28 days, while the fainter QZ Normae varies between magnitudes 8.71 and 9.03 over 3.79 days. It is also home to one of only a few planetary nebulae associated with galactic clusters (open or globular). The cluster, named BMP J1613-5406, originated from a progenitor star that is notably massive.

References

1. ^ "NGC 6067 -- Open (galactic) Cluster". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2011-03-01.
2. ^ Piskunov, A. E.; Schilbach, E.; Kharchenko, N. V.; Röser, S.; Scholz, R.-D. (January 1, 2008). "Tidal radii and masses of open clusters". Astronomy and Astrophysics. 477 (1): 165–172. Bibcode:2008A&A...477..165P. doi:10.1051/0004-6361:20078525.
3. ^ Bakich, Michael E. (2010). 1001 Celestial Wonders to See Before You Die: The Best Sky Objects for Star Gazers. Patrick Moore's Practical Astronomy Series. New York, New York: Springer. p. 190. ISBN 978-1-4419-1776-8.
4. O'Meara, Stephen James (2013). Deep-Sky Companions: Southern Gems. Cambridge University Press. p. 295. Bibcode:2013dcsg.book.....O. ISBN 9781107015012.
5. Cooper, Ian; Kay, Jenni; Kepple, George Robert (2008). The Night Sky Observer's Guide Vol 3: Th Southern Skies. Willmann-Bell, Inc. p. 257. ISBN 9780943396897.
6. Tonkin, Stephen F. (2007). Binocular astronomy. Patrick Moore's practical astronomy series. Springer. p. 200. ISBN 978-1-84628-308-6.
7. ^ O'Meara, Stephen James (2013). Deep-Sky Companions: Southern Gems. Cambridge University Press. p. 293. Bibcode:2013dcsg.book.....O. ISBN 9781107015012.
8. Inglis, Michael (2012). Astronomy of the Milky Way. New York, New York: Springer Science & Business Media. p. 137. ISBN 978-1-4471-0641-8.
9. Bagnall, Philip M. (2012). The Star Atlas Companion: What You Need to Know about the Constellations. New York, New York: Springer. p. 311. ISBN 978-1-4614-0830-7.
10. Thackeray, A D; Wesselink, A J; Harding, G A (1962). "The Cluster NGC 6067". Monthly Notices of the Royal Astronomical Society. 124: 445–459. Bibcode:1962MNRAS.124..445T. doi:10.1093/mnras/124.6.445 (inactive 1 November 2024).{{cite journal}}: CS1 maint: DOI inactive as of November 2024 (link)
11. Majaess, D.; Sturch, L.; Moni Bidin, C.; Soto, M.; Gieren, W.; Cohen, R.; et al. (2013). "Anchors for the Cosmic Distance Scale: the Cepheid QZ Normae in the Open Cluster NGC 6067". Astrophysics and Space Science. 347 (1): 61–70. arXiv:1305.3914. Bibcode:2013Ap&SS.347...61M. doi:10.1007/s10509-013-1495-1. S2CID 119207107.
12. Otero, Sebastian (11 October 2013). "V340 Normae". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 16 June 2015.
13. Watson, Christopher (4 January 2010). "QZ Normae". The International Variable Star Index. American Association of Variable Star Observers. Retrieved 16 June 2015.
14. Fragkou, V.; Parker, Q. A.; Zijlstra, A. A.; Crause, L.; Barker, H. (2019). "A high-mass planetary nebula in a Galactic open cluster". Nature Astronomy. 3 (9): 851–857. arXiv:1906.10556. Bibcode:2019NatAs...3..851F. doi:10.1038/s41550-019-0796-x. S2CID 195584110.

External links

• Media related to NGC 6067 at Wikimedia Commons

v t e Constellation of Norma
List of stars in Norma
Stars	Bayer γ γ δ ε ζ η θ ι ι κ λ μ Variable R S T RT RZ IM QU QV QX V378 HD 142415 143183 143361 148156 148937 330075 Other 1E 161348-5055 2M1540 2XMM J160050.7–514245 (Apep) SCR J1546−5534 SGR J1550−5418 XTE J1550–564
Exoplanets HD 142415 b HD 143361 b HD 148156 b HD 330075 b
Star clusters NGC 5925 NGC 5999 NGC 6005 NGC 6031 NGC 6067 NGC 6087 NGC 6115 NGC 6134 NGC 6152 NGC 6167 NGC 6169
Nebulae Mz 1 Mz 3 RCW 103 SDC 335.579-0.292 Shapley 1
Galaxy clusters Norma Cluster
Category

• Open clusters
• NGC objects
• Norma (constellation)
• Astronomical objects discovered in 1826