Bellatrix
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Bellatrix is the third-brightest star in the constellation of Orion, positioned 5° west of the red supergiant Betelgeuse. It has the Bayer designation γ Orionis, which is Latinized to Gamma Orionis. W
Bellatrix is a bright star in the constellation of Orion (top right).
Algol
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Algol, designated Beta Persei, known colloquially as the Demon Star, is a bright multiple star in the constellation of Perseus and one of the first non-nova variable stars to be discovered.
Bellatrix
…1.59 to 1.64, and appears to be a low amplitude, possibly irregular variable. Physical properties From left to right, the stars Bellatrix, the Sun, and Algol B The spectral types for O and early B stars were defined more rigorously in 1971, and Bellatrix was used as a standard for the B2 III type. The expected…
The Algol system on 12 August 2009. This is a CHARA interferometer image with 1/2-milliarcsecond resolution in the near-infrared H-band. The elongated appearance of Algol Aa2 (labelled B) and the round appearance of Algol Aa1 (labelled A) are real, but the form of Algol Ab (labelled C) is an artifact.
Algol is a bright star in the constellation of Perseus (upper right).
The constellation Perseus and Algol, the Bright Star in the Gorgon's head (Johannes Hevelius, Uranographia, 1690)