The cluster Westerlund 2 and its surroundings Credit: Hubble Space Telescope
Observation data (J2000 epoch)
Right ascension
10h 23m 58.1s[1]
Declination
−57° 45′ 49″[1]
Distance
20000 ly (6000 pc)
Apparent magnitude (V)
10.5[1]
Physical characteristics
Contains some of the hottest, brightest, and most massive stars.
Other designations
ESO 127-18, VDBH 95[1]
Associations
Constellation
Carina
See also: Open cluster, List of open clusters
Westerlund 2 is an obscured compact young star cluster (perhaps even a super star cluster[2]) in the Milky Way, with an estimated age of about one or two million years. It contains some of the hottest, brightest, and most massive stars known. The cluster resides inside a stellar breeding ground known as Gum 29, located 20,000 light-years away in the constellation Carina. It is half a degree from the naked eye Cepheid variable V399 Carinae.[3]
^ abcd"Cl Westerlund 2". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 1 May 2018.
^Y. Fukui; et al. (2015). "Cloud-cloud collision which triggered formation of the super star cluster RCW38". The Astrophysical Journal. 1504 (1): 26. arXiv:1504.05391. Bibcode:2016ApJ...820...26F. doi:10.3847/0004-637X/820/1/26. S2CID 118096773.
^"Hubble Space Telescope Celebrates 25 Years of Unveiling the Universe". NASA. 23 April 2015.
Westerlund2 is an obscured compact young star cluster (perhaps even a super star cluster) in the Milky Way, with an estimated age of about one or two...
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in the hinterland of the young cluster, Westerlund2". Monthly Notices of the Royal Astronomical Society. 480 (2): 2109–2124. arXiv:1807.06486. Bibcode:2018MNRAS...
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anniversary in space on April 24, 2015, STScI released images of the Westerlund2 cluster, located about 20,000 light-years (6,100 pc) away in the constellation...
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J. (2007). "Early-type stars in the core of the young open cluster Westerlund2". Astronomy and Astrophysics. 463 (3): 981–991. arXiv:astro-ph/0612622...
I.; Vacca, W. D. (2006-11-01). "A census of the Wolf-Rayet content in Westerlund 1 from near-infrared imaging and spectroscopy". Monthly Notices of the...
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millions years before present) ejected from the young, massive cluster Westerlund2. It was discovered in 2004 to be one of the most massive binary systems...
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Zone RCW 49 (3 June 2004) Devitt, Terry (May 27, 2004). "Milky Way churning out new stars at a furious pace". Constellation Guide Westerlund2 and Gum 29...
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stars and is one of the most massive binaries. WR 21a lies near the Westerlund2 open cluster and likely to be an ejected member. The distance of WR 21a...
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the most massive and luminous stars known List of most massive stars Westerlund 1 W26 NML Cygni WOH G64 – Most likely the largest known star VY Canis...
Retrieved 2 February 2017. Westerlund (2004), pp. 157-159 Westerlund (2004), pp. 98-99 Westerlund (2004), p. 163 Westerlund, s. 97–100. Westerlund (2004)...
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