ALGOL (Beta Persei). Surely one of the most remarkable stars of the sky and appropriately one of the most famed, Algol is the second magnitude Beta star of Perseus, the great mythological hero who rescued Andromeda from Cetus the Sea Monster.
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stars.astro.illinois.edu/sow/Algol.html
stars.astro.illinois.edu/sow/Algol.html
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Algol A is a famous variable star and is the first and title member of the well-known class of Algol-type eclipsing variables. The star is separated from its close companion "B" on average by only 0.062 AUs (a semi-major axis of 0.00218" at a HIPPARCOS distance estimate of 92.8 ly).
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www.solstation.com/stars2/algol3.htm
www.solstation.com/stars2/algol3.htm
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This type of variable star is called an eclipsing binary system, and Algol was the first system of this kind to be discovered. ... Algol also has a third star 1.5 times the mass and radius of the sun which orbits once in 1.86 years, and, as Kepler was clever enough to point out, the longer the orbit, bigger the orbit,
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www.astro.cornell.edu/~brs/algol/main.html
www.astro.cornell.edu/~brs/algol/main.html
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Algol is a specific type of binary, called an eclipsing binary star. These are very interesting because they orbit each other in such a way that it can be viewed from earth. Periodically, one star will appear to pass in front of the other, causing a minor eclipse in the night sky.
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www.phantasy-star.net/algol.txt
www.phantasy-star.net/algol.txt
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In the constellation Perseus there is a moderately bright star called Algol. It is remarkable in that every 68.75 hours its light dims rather suddenly for several hours before returning just as quickly to its former brightness.
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csep10.phys.utk.edu/astr162/lect/binaries/algol.html
csep10.phys.utk.edu/astr162/lect/binaries/algol.html
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Algol-type binary star systems contain a cool Sun-like star and a hotter blue star. The cool star has a magnetic field many times more powerful than that of our Sun, with starspots that are similar to sunspots. The magnetic fields of Algol binaries are powered by the rapid rotation of the cool star. ... Personal Author(s) :
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stinet.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=h...
stinet.dtic.mil/oai/oai?verb=getRecord&metadataPrefix=html&identifier=ADA308095
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Algol is an eclipsing binary star system 93 light-years away as determined by the Hipparcos satellite. The main star is a B8 main-sequence star 3 times as large as our sun and the secondary star is a K2-type subgiant.
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www.aavso.org/vstar/vsots/0199.shtml
www.aavso.org/vstar/vsots/0199.shtml
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A stage of rapid mass transfer occurs in the early history of the Algol-type star, which soon reverses the mass ratio of the system. Thus, the loser (subgiant) quickly becomes the less massive component. Mass transfer continues through the L1 point towards the gainer (main-sequence star), but at a much slower rate.
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mintaka.sdsu.edu/faculty/quyen/node11.html
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Algol star - Definition of Algol star from A Dictionary of Astronomy at Encyclopedia.com ... Algol star A type of eclipsing binary with periods of constant (or almost constant) brightness between well-defined eclipses; abbr. EA. This feature is an indication that the system is a detached binary or semidetached binary.
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www.encyclopedia.com/doc/1O80-Algolstar.html
www.encyclopedia.com/doc/1O80-Algolstar.html
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