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The brightest star in the constellation Piscis Austrinus, 24 light years from Earth.

[Arabic fam al-ḥūt, mouth of the fish, Fomalhaut : fam, mouth; see p in Semitic roots + al-, the + ḥūt, fish.]


(Astronomy) the brightest star in the constellation Piscis Austrinus, possessing a protoplanetary disc. Distance: 25 light years. Spectral type A3V
[C16: from Arabic fum'l-hūt mouth of the fish, referring to its position in the constellation]
References in periodicals archive ?
Now, astronomers have used a French radio telescope to map the dust encircling nearby Fomalhaut, the second star proved conclusively to have such a disk.
These observations reveal the debris ring around the star Fomalhaut in exceptional detail.
The first three relatively nearby main-sequence stars with imaged planets all belong to spectral type A: HR 8799, Fomalhaut, and Beta Pictoris.
At the bottom of the pile is Piscis Austrinus, the Southern Fish, which lays claim to Fomalhaut, the region's only 1st-magnitude star.
The sidereal time shown on our all-sky map can be called the Fomalhaut Hour, after the most prominent star of the traditional autumn constellations.
Ironically, little Piscis Austrinus, the Southern Fish, possesses a "big" star in 1st-magnitude Fomalhaut.
Finally, HST produced the first direct visible-light image of a planet orbiting another star--the bright southern star Fomalhaut (S&T: March 2009, page 22).
One of IRAS's most surprising discoveries was the finding by Fred Gillett (Kitt Peak National Observatory) and George Aumann (JPL) that some familiar stars such as Vega and Fomalhaut have excess emission at 25 microns.
A single fish lies lower right of Cetus, far below the Circlet and the Square, but Piscis Austrinus is uninteresting save for 1st-magnitude Fomalhaut, which means "Mouth of the Fish.
If you extend that line southward for 45 [degrees]--about 31/2 times its own length--it brings you to Fomalhaut.
For example, infrared satellite observatories--which can see into the dusty birthplaces of stars--revealed cold disks of gas and dust orbiting many familiar stars like Vega, Fomalhaut, and Beta Pictoris.