Beta Persei
Related Category: Astronomy: Stars
(b´t pûr´s´´): see Algol.
More on Beta Persei
Algol - famous variable star in the constellation Perseus; Bayer designation &bgr; Persei; 1992 position R.A. 3h07.7m, Dec.
Beta Persei A
Algol A is a blue-white main sequence star of spectral and luminosity type B5-8 V. The star may have a mass 3.59 times Sol's (Molnar and Mutel, 1996, Table 1), 2.
Algol (Beta Persei)
A multiple star system in the constellation Perseus. Its Arabic name means "Demon Star", apparently a reference to its peculiar behavior.
Beta Persei (Algol) is a notable EA type eclipsing binary, changing from 2.12 to 3.39 every 2.8673 days (2d, 20h 48m 56s) as the companion eclipses the primary. The eclipse lasts roughly ten hours.
[6454] beta Persei is much better known by its traditional name, Algol, from the Arabic phrase "ra's al-ghul," meaning "head of the ogre." In the 16th century, the star was known by its Latin name, Caput Larvae, which means "spectre's head.
ALGOL
Algol (Beta Persei) is a star in the Perseus. Algol was the first known star. It has a magnitude that ranges from 2.1 to 3.4; the period is 2.9 days.
ALGOL
Algol (Beta Persei) is a star in the constellation Perseus. Algol was the first known eclipsing binary star. It has a magnitude that ranges from 2.1 to 3.4; the period is 2.9 days.
Finally, stars beta Persei, rho Persei, and pi Persei form Perseus' right leg and foot.
Reference
* H. A. Rey, The Stars — A New Way To See Them. Enlarged World-Wide Edition. Houghton Mifflin, Boston, 1997. ISBN 0-395-24830-2.
Stars ...
Dominated as it is by its two brightest stars, Mirfak and Algol (Alpha and Beta Persei), the next four stars of glorious Perseus, the mythical rescuer of Andromeda, are often ignored.
Algol Beta Persei
Algorab Delta Corvi
Alhajoth Alpha Aurigae
Alhena Gamma Geminorum
Alioth Epsilon Ursae Majoris
Alkaid Eta Ursae Majoris
Al Kurud Theta Columbae
Al Kalb al Rai Rho-2 Cephei
Alkalurops Mu Bootis
Al Kaphrah Chi Ursae Majoris ...
As an example, consider the star Algol (Beta Persei, the second brightest star in the constellation Perseus).
Materials from Encke apparently make up the stream of sky junk that create the "Beta Perseid" meteor shower, and the Tunguska event coincided with a peak in that shower.
The prototype of the Algol type variable stars is Algol, or beta Persei. Its variability was first recorded in 1667 by Geminiano Montanari. The mechanism for its being variable was first correctly explained by John Goodricke in 1782.
The star that Ptolemy called ‘the bright one in the Gorgon head' is Beta Persei, named Algol from the Arabic ra's al-ghul meaning ‘the demon's head'.
Gorgona; Gorgonea Prima; Demon Star; El Ghoul.
Beta Persei
HR 936
HD 19356 ...
Eclipsing binaries may therefore be detected by brightness variations of the binary system. The most famous are beta Persei (Algol), which varies from 3.4 to 2.1 over 2.87 days, and gamma Persei, which varies by three magnitudes over 14 years.
 See also: Algol, Star, Orbit, Constellation, Magnitude
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