Fomalhaut


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Fomalhaut

(fō`məlhôt'), brightest star in the constellation Piscis Austrinus (southern fish); Bayer designation Alpha Piscis Austrini; 1992 position R.A. 22h57.3m, Dec. −29°39'. A white, main-sequence star of spectral classspectral class,
in astronomy, a classification of the stars by their spectrum and luminosity. In 1885, E. C. Pickering began the first extensive attempt to classify the stars spectroscopically.
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 A3 V, its apparent magnitudemagnitude,
in astronomy, measure of the brightness of a star or other celestial object. The stars cataloged by Ptolemy (2d cent. A.D.), all visible with the unaided eye, were ranked on a brightness scale such that the brightest stars were of 1st magnitude and the dimmest stars
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 of 1.16 makes it one of the 20 brightest stars in the sky. Fomalhaut is one of the nearer bright stars, lying at a distance of 25 light-years. The star, also known as Fomalhaut A, is part of a triple-star system. Images made in 2004 and 2006 by the Hubble Space Telescope were believed to show a planet orbiting the star, but subsequent study has questioned that interpretation. The star's name is from the Arabic meaning "mouth of the southern fish."

Fomalhaut

(foh -măl-hawt) (α PsA) A white star that is the brightest in the constellation Piscis Austrinus. In 1983 the infrared satellite IRAS detected a shell of cool matter surrounding this star. The shell, which has a temperature of about 50 K, is thought to be solid material orbiting the star and forming a protoplanetary system. See also Vega. mv : 1.16; Mv : 2.0; spectral type: A3 V; distance: 6.7 pc.

Fomalhaut

 

(also a Piscis Austrinus), the brightest star in the constellation Piscis Austrinus. With a visual stellar magnitude of 1.2, Fomalhaut is 14 times brighter than the sun. It is located at a distance of seven parsecs from the sun.

Fomalhaut

[′fō·mə‚lȯt]
(astronomy)
α Piscis Australis
References in periodicals archive ?
Fomalhaut, Beta Pictoris, and our own sun are main-sequence stars because they fuse hydrogen into helium to generate energy.
Even the dim Fomalhaut Hour has the bright Summer Triangle in the west connected by a Milky-Way-backed arc of constellations stretching to bright Auriga and Taurus in the northeast and east-northeast.
Fomalhaut is the only 1st-magnitude star visible from mid-northern latitudes across a span of 8 hours of right ascension, from Deneb to Aldebaran.
Fomalhaut has a ICuiper-Belt-like disk of dust and rubble about 140 astronomical units from the star, as seen in the Hubble image at right.
Observations spanning several years in visible light revealed that the object, known as Fomalhaut b, is moving with the star on the sky (meaning they share a common proper motion), confirming its physical association.
altitudes of Fomalhaut and Antares, respectively, and they manage to
ALMA had first observed dusty debris surrounding the young star Fomalhaut in 2012, when the telescope was still being built.
I think scientists have made their profession more complex than it needs to be by giving stars such preposterous names as Fomalhaut, Gacrux and Miaplacidus.
Exuberant Internet voters could stick Fomalhaut b with the label Leisurely Fish because it moves slowly through the constellation Pisces.