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Data collected from both the Chandra X-ray Observatory and James Webb Space Telescope were combined to depict NGC 602, a star cluster located on the outskirts of a not-so-distant galaxy some ...
Messier 2 or M2 (also designated NGC 7089) is a globular cluster in the constellation Aquarius, five degrees north of the star Beta Aquarii. It was discovered by Jean-Dominique Maraldi in 1746, and is one of the largest known globular 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.
St / Stock — Jürgen Stock (open star clusters) (Stock 1 and 2 in, [38] Stock 3 to 23 in, [39] Stock 24 in [40]) Stone — Ormond Stone (double stars) Streicher — (telescopic asterisms) Stromlo — (for example: Stromlo 2 in Monoceros and Canis Major, at IC 2177; the 'Eagle Nebula') StWr — Stock-Wroblewski (planetary nebulae) Sw — Swift ...
Stephenson 2 DFK 49 or St2-11 is a putative post red supergiant [3] star in the constellation Scutum, in the massive open cluster Stephenson 2.It is possibly one of the largest known stars with a radius estimated to be between 1,074 solar radii (747,000,000 kilometres; 4.99 astronomical units) [2] to 1,300 solar radii (900,000,000 kilometres; 6.0 astronomical units), [3].
Stephenson 2, also known as RSGC2 (Red Supergiant Cluster 2), is a young massive open cluster belonging to the Milky Way galaxy. It was discovered in 1990 as a cluster of red supergiants in a photographic, deep infrared survey by the astronomer Charles Bruce Stephenson , after whom the cluster is named.
NGC 1981 (also known as OCL 525) is an open cluster which is located in the constellation Orion. It was discovered by John Herschel on 4 January 1827. Its apparent magnitude is 4.2 [3] and its size is 28.00 arc minutes. It lies to the north of the Orion Nebula, separated from it by the Sh2-279 region containing NGC 1973, 1975, and 1977.
A stellar association is a very loose star cluster, looser than both open clusters and globular clusters. Stellar associations will normally contain from 10 to 100 or more visible stars. An association is primarily identified by commonalities in its member stars' movement vectors, ages, and chemical compositions.