V382 Carinae

150,000 L ☉

V382 Carinae, also known as x Carinae, is a supergiant of spectral type G in the constellation keel of the ship. He is one of the largest known stars.

Name

The first part of the name " V382 " follows the rules for naming variable stars and states that V382 Carinae is the 382nd star in the constellation keel of the ship, to the variability could be detected. The second part of the name " Carinae " is the genitive of the Latin name of the constellation ship's keel ( Latin ' Carina ').

Position

V382 Carinae is part of the ship's keel (Latin Carina ), a ligand is located in the plane of the Milky Way constellation that can be observed from the southern hemisphere from almost all year round. From Europe, the star never appears in the night sky.

The distance from V382 Carinae is about 6000 light years, it is very obvious that a large part of its light by surrounding it, or between it and the sun located -free dust clouds is attenuated and the star therefore much darker appear in the sky when he actually be would have. So far could not be clearly determined whether V382 Carinae is part of a cluster. The center of the Carina Nebula (NGC 3372), the region around the luminous binary star system Eta Carinae and HD 93129 is of V382 Carinae from about 2,000 light- years away. Only one every 0.253 seconds rotating pulsar at a distance of about 20 light-years, has so far been found. This could also indicate that V382 Carinae is one of the last active stars of a previous cluster.

Physical Properties

The physical values ​​of V382 Carinae are as common in heavy stars of this class, very uncertain and therefore can not be clearly defined.

V382 Carinae is a giant star and is divided because of its luminosity in the Hertzsprung -Russell diagram in the luminosity class Ia -0, its properties are above the level of a typical supergiant its spectral type, however, is V382 Carinae not as highly luminous as Rho Cassiopeiae or V509 Cassiopeiae, hypergiants The summit surface temperature.

The mass of V382 Carinae is estimated to be 50 times the sun, its diameter is probably about a billion kilometers. Would V382 Carinae in the center of our solar system, it would reach to the orbit of Jupiter.

V382 Carinae is one of the classical Cepheids, a sub-class of pulsating variables, named after the star Delta Cephei, the prototype of this class. The surface temperature of such stars varies strictly periodic, hence also vary their spectral class, in the case of V382 Carinae, from G0 to G4. For this type of variable stars, it is unusually difficult. For example, one of the V509 Cassiopeiae comparable to the semi- regular variable stars. Thus, V382 Carinae is not the end of his life and could swell over time and significantly increase its luminosity.