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- Organizing and summarizing search results for youAlgol, also known as Beta Persei, is a prototype of a class of variable stars called eclipsing binaries. It is the second brightest star in the northern constellation Perseus, with an apparent visual magnitude that changes over the range of 2.1 to 3.4 with a period of 2.87 days. Algol is a triple-star system that dims on a regular basis and when at its brightest it shines three times that as when it’s dimming. Its name is derived from the Arabic language (ra’s al-ghul) meaning, “the demon’s head”.2 Sources
Algol - Star Facts – Stars: A guide to the night sky
Beta Persei is a triple star system consisting of Beta Persei Aa1, a hot blue-white main sequence star of the spectral type B8V, Beta Persei Aa2, a cooler orange subgiant with the stellar classification K0IV, and Beta Persei Ab, a white star of the spectral type A7m. The components are sometimes referred to … See more
Observations of Algol have challenged the basic theories of stellar evolution. A fundamental belief is that the more massive the star, the faster it evolves, leaves the main … See more
Algol is a prototype for a class of eclipsing variable stars known as Algol variables. These are semidetached binary star systems consisting of … See more
The Algol Star – Features and Facts About The …
Algol (Beta Persei, B Persei) is the second brightest star in the Constellation Perseus, after Mirfak (alpha Persei), and one of the best known variable stars in the night sky. Algol variable stars have a spherical shape. It is a popular sight …
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Algol - Wikipedia
Algol /ˈælɡɒl/, designated Beta Persei (β Persei, abbreviated Beta Per, β Per), 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.
Algol is a three-star system, consisting of Beta Persei Aa1, Aa2, and Ab – in which the hot luminous primary β Persei Aa1 and the larger, but cooler and fai…Wikipedia · Text under CC-BY-SA license- Estimated Reading Time: 8 mins
Algol the Demon Star … but why is it called that?
Oct 31, 2024 · Early astronomers nicknamed it Algol the Demon Star for its strange behavior. Shivers! When you look at Algol, it doesn’t appear any scarier than any other star, at least not at first. But,...
Star Facts: Algol (Demon Star) - Type, Size, & Location
Jan 29, 2018 · Algol (Beta Persei), known informally as the Demon Star, is a triple star system in which the components are designated Beta Persei Aa1, Aa2, and Ab, respectively.
Algol - Star Facts - Online Star Register
Apr 8, 2016 · Algol is a triple-star system which dims on a regular basis and when at its brightest it shines three times that as when it’s dimming. This star represents the head of mythological monster, Medusa. In fact, its name is derived from …
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Algol star system | Star Facts - Star Facts – Stars: A guide to the ...
Apr 22, 2020 · The Algol system as it appeared on 12 August 2009. This is not an artistic representation, but rather is a true two-dimensional image with 1/2 milli-arcsecond resolution in …
Algol (β Persei) | Facts, Information, History & Definition
Feb 4, 2020 · Algol, known as Beta Persei, is a multiple star system located in the constellation of Perseus. It is one of the first non-nova variable stars to be discovered and it is also colloquially known as the Demon Star. Key Facts & …
Algol AB - Star Facts
Apr 21, 2020 · Algol (β Persei) is a triple-star system (Algol A, B, and C) in the constellation Perseus, in which the large and bright primary Algol A is regularly eclipsed by the dimmer Algol B every 2.87 days.
Algol (Beta Persei): Eclipsing Variable Star in Perseus …
Apr 28, 2019 · Algol, Beta Persei, is a bright multiple star located in Perseus. It is the second brightest star in the constellation, after Mirfak, Alpha Persei. The star is also known as Gorgona, Gorgonea Prima, Demon Star and El Ghoul.
Algol | Variable, Binary, Binary System | Britannica
Algol, prototype of a class of variable stars called eclipsing binaries, the second brightest star in the northern constellation Perseus. Its apparent visual magnitude changes over the range of …
A history of star Algol, the winking 'Demon Star' in Perseus
Ask any astronomer to name the most famous variable star in the sky and many will say Algol, the eclipsing binary in Perseus whose variations were first reported in 1670 by the Italian …
Meet Algol, the Demon Star - Sky & Telescope
Oct 31, 2024 · The primary, Algol A, is a hot, blue, main-sequence star, while Algol B is a cooler K2 giant with a yellowish cast. You can’t separate the two visually — they orbit each other far …
Algol, the ghoul star - Universe Guide
Feb 4, 2025 · Algol (Beta Persei) is a blue main sequence star in the constellation of Perseus. It can be seen in the northern hemisphere night sky. Algol distance from Earth is 89.93 light …
Algol - β Persei (beta Persei) - Star in Perseus - TheSkyLive
Algol, also designated as β Persei (beta Persei), is a variable and multiple main-sequence star of spectral class B8 in the constellation of Perseus. Algol visual magnitude is 2.12, making it the …
Algol facts for kids - Kids encyclopedia
Algol, also known as the Demon Star, is a bright star in the Perseus constellation. It is one of the best known double stars that can only be seen in spectroscopes, the first star of its type …
Algol, the Demon Star - nightskyinfo.com
Beta Persei, better known as Algol, is the premier eclipsing binary star of the northern sky. This is because it can be observed with the unaided eye and it has a relatively short period of less …
Algol - (Intro to Astronomy) - Vocab, Definition, Explanations
Algol is a well-known eclipsing binary star system, where two stars orbit each other and periodically eclipse one another from our perspective on Earth. This phenomenon is closely …
Algol - Students | Britannica Kids | Homework Help
the beta, or second brightest, star in the constellation Perseus. Algol is actually a three-star system that is classified as an eclipsing binary. This means that as the three stars revolve …
When Algol Winks, Will You Wink Back? - Sky & Telescope
Nov 19, 2014 · Algol A, the primary star, is 3.7 times more massive than the Sun, while lightweight Algol B boasts only a mass of 0.81 solar. Yet as stars go, the primary is youthful, while its less …
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