Supergiant
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Supergiants are among the most massive and most luminous stars. Supergiant stars occupy the top region of the Hertzsprung–Russell diagram, with absolute visual magnitudes between about −3 and −8. The
The four brightest stars in NGC 4755 are blue supergiant stars, with a red supergiant star at the centre. (ESO VLT)
The disc and atmosphere of Betelgeuse (ESO)
RS Puppis is a supergiant and classical Cepheid variable.
G299 Remnants Super Nova Type 1a 20150218
Rigel
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Rigel is a blue supergiant star in the equatorial constellation of Orion. It has the Bayer designation β Orionis, which is Latinized to Beta Orionis and abbreviated Beta Ori or β Ori. Rigel is the bri
Supergiant
…rare and short-lived stars, but their high luminosity means that there are many naked-eye examples, including some of the brightest stars in the sky. 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…
Orion, with Rigel at bottom right, at optical wavelengths plus the Hα (hydrogen-alpha) spectral line to emphasize gas clouds
Rigel A and Rigel B as they appear in a small telescope
Rigel and reflection nebula IC 2118 in Eridanus. Rigel B is not visible in the glare of the main star.
Orion illustrated in a copy of Abd al-Rahman al-Sufi's Book of Fixed Stars. The foot on the left is annotated rijl al-jauza al-yusra, the Arabic name from which Rigel is derived.