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The following other wikis use this file: Usage on el.wikipedia.org Ιωνικός Νίκαιας (ποδόσφαιρο) Usage on fr.wikipedia.org
Stars Star system Median distance Stars in system Spectral type Apparent magnitude (V) Comments and references Hyades: 5 HD 27482: 151: 1: B8V: The Closest Blue Straggler star to Earth. HD 27130: 153: 1: B8V: Chi Tauri: 153: 1: B9.5V: 71 Tauri: 153: 1: B8V: HD 283579: 153: 1: B9.5V: Coma Star Cluster: 3 13 Comae Berenices: 260 ± 20: 1: A3 V: 5 ...
The Pistol Star is an extremely luminous blue hypergiant star, one of the most luminous and massive known stars in the Milky Way. It is one of many massive young stars in the Quintuplet cluster in the Galactic Center region. The star owes its name to the shape of the Pistol Nebula, which it illuminates.
Star system Nebula Median distance Stars in system Spectral type Apparent magnitude (V) Comments and references P Cygni (34 Cygni) 5251±180: 1: B1-2 Ia-0ep: 4.82: The closest luminous blue variable star to Earth V4029 Sagittarii (HD 168607) 6,000 1 B9Ia + 8.12 to 8.29 [4] [5] near the Omega Nebula: V905 Scorpii (HD 160529) 6,100 1 LBV 6.66 [4] [5]
A blue supergiant (BSG) is a hot, luminous star, often referred to as an OB supergiant. They are usually considered to be those with luminosity class I and spectral class B9 or earlier, [ 1 ] although sometimes A-class supergiants are also deemed blue supergiants.
These stars also evolve through the core helium burning stage at constant luminosity, first increasing in temperature then decreasing again as they move toward the AGB. However, at the blue end of the horizontal branch, it forms a "blue tail" of stars with lower luminosity, and occasionally a "blue hook" of even hotter stars. [7]
Sketch of Hertzsprung–Russell diagram of a globular cluster, showing blue stragglers. A blue straggler is a type of star that is more luminous and bluer than expected. . Typically identified in a stellar cluster, they have a higher effective temperature than the main sequence turnoff point for the cluster, where ordinary stars begin to evolve towards the red gi
The first luminous blue variable to be identified as a variable star was P Cygni, and these stars have been referred to as P Cygni type variables. The General Catalogue of Variable Stars decided there was a possibility of confusion with P Cygni profiles , which also occur in other types of stars, and chose the acronym SDOR for "variables of the ...
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