variable star

İngilizce - Türkçe

variable star teriminin İngilizce Türkçe sözlükte anlamı: (Astronomi) değişen yıldız; değişken yıldız
irregular variable star: düzensiz değişen yıldız
magnetic variable star: manyetik değişken yıldız
eclipsing variable star: (Astronomi) örten değişen yıldız
eruptive variable star: (Astronomi) patlayan değişen yıldız
periodic variable star: (Astronomi) dönümlü değişen yıldız

İngilizce - İngilizce

variable star teriminin İngilizce İngilizce sözlükte anlamı: Any star whose brightness varies; A star whose brightness varies because of internal changes or periodic eclipsing of mutually revolving stars. Star whose observed brightness varies noticeably in intensity. Pulsating variables expand and contract in cycles, pulsating rhythmically in brightness and size. Explosive variables include novas and supernovas, which brighten rapidly due to sudden outbursts of radiant energy; the increased brightness lasts a short time, followed by relatively slow dimming. Eclipsing variable stars are variable only because light from one star is blocked by another in Earth's direction. Hundreds of thousands of variable stars are known. See also binary star; Cepheid variable; flare star; pulsar; T Tauri star; a star that varies noticeably in brightness
variable stars: plural form of variable star
a variable star: variable
eclipsing variable star: or eclipsing binary Binary star in an orbit whose plane passes through or very near Earth. An observer on Earth sees one star pass periodically in front of the other and diminish its light through an eclipse. The star Algol, in the constellation Perseus, was the first such star recognized (1782); thousands are now known. By combining the brightness variations with spectroscopic information for both stars, astronomers can determine the mass and size of each star. See also variable star