Definitions for vegaˈvi gə, ˈveɪ-
This page provides all possible meanings and translations of the word vega
Vega, Lope de Vega, Lope Felix de Vega Carpio(noun)
prolific Spanish playwright (1562-1635)
the brightest star in the constellation Lyra
A measurement of the sensitivity of the value of an option to changes in the implied volatility of the price of the underlying product.
Origin: Perhaps chosen arbitrarily as a word beginning with "v" (for "volatility") that sounds as if it could be a Greek letter (like the related risk parameters "delta", "gamma" etc.)
a brilliant star of the first magnitude, the brightest of those constituting the constellation Lyra
Vega is the brightest star in the constellation Lyra, the fifth brightest star in the night sky and the second brightest star in the northern celestial hemisphere, after Arcturus. It is a relatively close star at only 25 light-years from Earth, and, together with Arcturus and Sirius, one of the most luminous stars in the Sun's neighborhood. Vega has been extensively studied by astronomers, leading it to be termed "arguably the next most important star in the sky after the Sun." Vega was the northern pole star around 12,000 BCE and will be so again around the year 13,727 when the declination will be +86°14'. Vega was the first star other than the Sun to be photographed and the first to have its spectrum recorded. It was one of the first stars whose distance was estimated through parallax measurements. Vega has served as the baseline for calibrating the photometric brightness scale, and was one of the stars used to define the mean values for the UBV photometric system. Vega is only about a tenth of the age of the Sun, but since it is 2.1 times as massive its expected lifetime is also one tenth of that of the Sun; both stars are at present approaching the midpoint of their life expectancies. Vega has an unusually low abundance of the elements with a higher atomic number than that of helium. Vega is also a suspected variable star that may vary slightly in magnitude in a periodic manner. It is rotating rapidly with a velocity of 274 km/s at the equator. This is causing the equator to bulge outward because of centrifugal effects, and, as a result, there is a variation of temperature across the star's photosphere that reaches a maximum at the poles. From Earth, Vega is being observed from the direction of one of these poles.
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