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This is a list of the nearest supergiant stars to Earth, located at a distance of up to 1,100 light-years (340 parsecs) from Earth. Some of the brightest stars in the night sky, such as Rigel and Antares, are in the list.
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.
The nearest yellow giant, together with Capella B. Errai (Gamma Cephei A) 44.98 ± 0.09 [12] K1III-IVCN1 [13] 4.74 +0.03 −0.08 [14] 1.27 +0.05 −0.07 [14] 3.21 [15] Caph (Beta Cassiopeiae) 54.7 ± 0.3 [1] F2 III [16] 3.69 × 3.43 [17] 1.91 ± 0.02 [17] 2.28 (2.25–2.31) [18] The nearest F-type giant. Menkent (Theta Centauri) 58.8 ± 0.2 [1 ...
Rigel, the brightest star in the constellation Orion is a typical blue-white supergiant; the three stars of Orion's Belt are all blue supergiants; Deneb is the brightest star in Cygnus, another blue supergiant; and Delta Cephei (itself the prototype) and Polaris are Cepheid variables and yellow supergiants.
The type-cD galaxy [1] (also cD-type galaxy, [2] cD galaxy [3]) is a galaxy morphology classification, a subtype of type-D giant elliptical galaxy. Characterized by a large halo of stars, [4] they can be found near the centres of some rich galaxy clusters. [5] They are also known as supergiant ellipticals [6] or central dominant galaxies. [7]
Size comparison of supergiant and hypergiant stars, including Cygnus OB2 #12, V382 Carinae, Betelgeuse, VV Cephei, and VY Canis Majoris Cygnus OB2 #12 is generally assumed to be a member of the Cyg OB2 Association, a cluster of young massive stars about 4,600 light-years (1,400 pc) away in Cygnus, and resides in a region of the Milky Way from which visible light is heavily absorbed by ...
The distance of NML Cygni from Earth is estimated to be around 1.6 kpc, about 5,300 light-years. [10] It is a part of the Cygnus OB2 association, one of the closest massive associations to the Sun, spanning nearly 2° on the sky or ~ 30 pc in radius at the distance of 1.74 ± 0.2 kpc . [ 11 ]
The letter "M" in this designation means that it is a red star belonging to the M spectral class and therefore has a relatively low photospheric temperature; the "Ia-ab" suffix luminosity class indicates that it is an intermediate-luminosity supergiant, with properties partway between a normal supergiant and a luminous supergiant. Since 1943 ...