Gamma Trianguli Australis

γ TrAγ Trianguli Australis
Gamma Trianguli Australis (γ Trianguli Australis) is a single, white-hued star in the southern constellation of Triangulum Australe.wikipedia
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Triangulum Australe

Southern TriangleTrATrianguli Australis
Gamma Trianguli Australis (γ Trianguli Australis) is a single, white-hued star in the southern constellation of Triangulum Australe.
Completing the triangle are the two white main sequence stars Beta and Gamma Trianguli Australis.

Alpha Trianguli Australis

Atriaα TrAAlpha
Along with Alpha and Beta Trianguli Australis it forms a prominent triangular asterism that gives the constellation its name (Latin for southern triangle).
Alpha Trianguli Australis (Latinised from α Trianguli Australis, abbreviated Alpha TrA, α TrA), officially named Atria, is the brightest star in the southern constellation of Triangulum Australe, forming an apex of a triangle with Beta Trianguli Australis and Gamma Trianguli Australis that gives the constellation its name (Latin for southern triangle).

List of stars in Triangulum Australe

third-brightest member of this constellationTriangulum Australe
It is the third-brightest member of this constellation with an apparent visual magnitude of +2.87.

Flag of Brazil

Brazilian flagflagBrazil
γ TrA appears on the flag of Brazil, symbolising the state of Paraná.

Star

starsstellarmassive star
Gamma Trianguli Australis (γ Trianguli Australis) is a single, white-hued star in the southern constellation of Triangulum Australe.

Constellation

constellationsEuropean constellationModern constellation
Gamma Trianguli Australis (γ Trianguli Australis) is a single, white-hued star in the southern constellation of Triangulum Australe.

Beta Trianguli Australis

β TrAβ Trianguli AustralisBeta
Along with Alpha and Beta Trianguli Australis it forms a prominent triangular asterism that gives the constellation its name (Latin for southern triangle).

Asterism (astronomy)

asterismasterismsFalse Cross
Along with Alpha and Beta Trianguli Australis it forms a prominent triangular asterism that gives the constellation its name (Latin for southern triangle).

Latin

Latin languageLat.la
Along with Alpha and Beta Trianguli Australis it forms a prominent triangular asterism that gives the constellation its name (Latin for southern triangle).

Apparent magnitude

apparent visual magnitudemagnitudevisual magnitude
It is the third-brightest member of this constellation with an apparent visual magnitude of +2.87.

Parallax

trigonometric parallaxsolar parallaxmotion parallax
based upon parallax measurements, Gamma Trianguli Australis is located at a distance of about 184 ly from Earth.

Astronomical spectroscopy

spectrumspectroscopicspectra
The spectrum of this star matches a stellar classification of A1 V, which identifies it as an A-type main sequence star that is generating energy through the nuclear fusion of hydrogen at its core.

Stellar classification

spectral typeK-typeG-type
The spectrum of this star matches a stellar classification of A1 V, which identifies it as an A-type main sequence star that is generating energy through the nuclear fusion of hydrogen at its core.

A-type main-sequence star

A-type main sequence starwhite main sequence starwhite main-sequence star
The spectrum of this star matches a stellar classification of A1 V, which identifies it as an A-type main sequence star that is generating energy through the nuclear fusion of hydrogen at its core.

Nuclear fusion

fusionhydrogen fusionfusion reaction
The spectrum of this star matches a stellar classification of A1 V, which identifies it as an A-type main sequence star that is generating energy through the nuclear fusion of hydrogen at its core.

Europium

EuErEu 2+
An unusual abundance of the element europium demonstrates it to be a peculiar, or Ap star.

Ap and Bp stars

Ap starBp starsilicon star
An unusual abundance of the element europium demonstrates it to be a peculiar, or Ap star.

Stellar rotation

projected rotational velocityrotationrotational velocity
Most stars of this type are slow rotators, but Gamma Trianguli Australis displays a very high rate of rotation with a projected rotational velocity of 199 km s −1.

Infrared excess

excess of infrared radiationexcess emission of infrared radiationexcess infrared emission
This system shows an excess emission of infrared radiation, suggesting that there is a circumstellar disk of dust orbiting this star.

Kelvin

KkelvinsKelvin scale
The mean temperature of the emission is 50 K, corresponding to a separation from the star of 481 astronomical units.

Astronomical unit

AUastronomical unitsAUs
The mean temperature of the emission is 50 K, corresponding to a separation from the star of 481 astronomical units.

Paraná (state)

ParanáParaná statePR
γ TrA appears on the flag of Brazil, symbolising the state of Paraná.

List of brightest natural objects in the sky

brightest object in the Earth's skybrightest objects in the skyfourth brightest object in the sky