α-antiaroside - traduction vers
![Polaris pictured in the flag of [[Nunavut]]](https://commons.wikimedia.org/wiki/Special:FilePath/Flag of Nunavut.svg?width=200 "Polaris pictured in the flag of [[Nunavut]]")
![integrated flux nebula.]]](https://commons.wikimedia.org/wiki/Special:FilePath/Integrated Flux Nebula Surrounding Polaris - Kush Chandaria.jpg?width=200 "integrated flux nebula.]]")
![Polaris components as seen by the [[Hubble Space Telescope]]](https://commons.wikimedia.org/wiki/Special:FilePath/Polaris alpha ursae minoris.jpg?width=200 "Polaris components as seen by the [[Hubble Space Telescope]]")
![[[Big Dipper]] and [[Ursa Minor]] in relation to Polaris](https://commons.wikimedia.org/wiki/Special:FilePath/Ursa Major - Ursa Minor - Polaris.jpg?width=200 "[[Big Dipper]] and [[Ursa Minor]] in relation to Polaris")
![A typical Northern Hemisphere [[star trail]] with Polaris in the center.](https://commons.wikimedia.org/wiki/Special:FilePath/Star Trail above Beccles - geograph.org.uk - 1855505.jpg?width=200 "A typical Northern Hemisphere [[star trail]] with Polaris in the center.")
![alpha spectrum]].](https://commons.wikimedia.org/wiki/Special:FilePath/Alpha decay energies example.svg?width=200 "alpha spectrum]].")
![Alpha radiation detected in an isopropanol [[cloud chamber]] (after injection of an artificial source radon-220).](https://commons.wikimedia.org/wiki/Special:FilePath/Alpha radiation in a cloud chamber.jpg?width=200 "Alpha radiation detected in an isopropanol [[cloud chamber]] (after injection of an artificial source radon-220).")
![Energy-loss ([[Bragg curve]]) in air for typical alpha particle emitted through radioactive decay.](https://commons.wikimedia.org/wiki/Special:FilePath/Bragg Curve for Alphas in Air-PT-en.svg?width=200 "Energy-loss ([[Bragg curve]]) in air for typical alpha particle emitted through radioactive decay.")
![A physicist observes alpha particles from the decay of a polonium source in a [[cloud chamber]]](https://commons.wikimedia.org/wiki/Special:FilePath/Physicist Studying Alpha Rays GPN-2000-000381.jpg?width=200 "A physicist observes alpha particles from the decay of a polonium source in a [[cloud chamber]]")
![[[Reference ranges for blood tests]], comparing lactate content (shown in violet at center-right) to other constituents in human blood](https://commons.wikimedia.org/wiki/Special:FilePath/Blood values sorted by mass and molar concentration.png?width=200 "[[Reference ranges for blood tests]], comparing lactate content (shown in violet at center-right) to other constituents in human blood")
Wikipédia
Alpha Volantis (Alpha Vol), Latinized from α Volantis, is a binary star system located in the southern constellation Volans. It has an apparent visual magnitude of +4.00, which is bright enough to be seen with the naked eye. Based upon parallax measurements made with the Hipparcos spacecraft, it is located at a distance of 125 light years from the Sun. As of 2010, the two components of this system had an angular separation of 0.0318″ along a position angle of 286.9°. The magnitude difference between the two components is 0.1. It is considered a member of the Sirius supercluster.
The primary component is an Am star with a stellar classification of kA3hA5mA5 V. This notation indicates the star has the weak calcium II K-line of an A3 star, and the hydrogen and metallic lines of an A5 star. It has an estimated age of 427 million years. In 1992, it was found to be emitting an infrared excess, suggesting the presence of a circumstellar disk of dust. However, subsequent observations have not confirmed this.
