what are the different types of variable star?
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There are two basic types of variable stars: intrinsic variables, whose luminosity actually changes, and extrinsic variables, whose apparent changes in brightness are due to changes in the amount of their light that can reach Earth. A star could be an intrinsic variable because it periodically swells and shrinks.
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['Radio.', 'Microwaves.', 'Infrared.', 'Visible light.', 'Ultraviolet.', 'X-rays (but they are waves)', 'Gamma rays.']
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A star during most of its life is a main-sequence star, which consists of a core, radiative and convective zones, a photosphere, a chromosphere and a corona.
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A G-type main-sequence star (Spectral type: G-V), often (and imprecisely) called a yellow dwarf, or G dwarf star, is a main-sequence star (luminosity class V) of spectral type G. Such a star has about 0.84 to 1.15 solar masses and surface temperature of between 5,300 and 6,000 K., Tables VII, VIII. Like other main- ...
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['Coronal hole.', 'Coronal mass ejection.', 'Geomagnetic storm.', 'Solar flare.', 'Solar particle event.', 'Solar prominence.', 'Sunspot.', 'Space Weather.']
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['Andromeda Galaxy.', 'Canis Major Dwarf Galaxy.', 'Cygnus A.', 'Maffei I and II.', 'Magellanic Clouds.', 'Milky Way Galaxy.', 'Virgo A.']
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["The Big Dipper/Ursa Major, 'The Great Bear' This may be 'cheating' a little bit because the Big Dipper is not technically a constellation, but part of a constellation known as Ursa Major. ... ", "The Little Dipper/Ursa Minor, 'The Little Bear' ... ", "Orion, 'The Hunter' ... ", "Taurus, 'The Bull' ... ", "Gemini, 'The Twins'"]
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['Milky.', 'Spiral.', 'Elliptical.', 'Galactic.', 'Interstellar.', 'Stellar.', 'Gravitational.', 'Dwarf.']
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Characteristics of Stars. The five characteristics used to classify stars are color, temperature, size, composition, and brightness. A stars color depends on its temperature. Super Giants are very large stars, and use their hydrogen very fast and die young.
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A type Ia supernova (read "type one-a") is a type of supernova that occurs in binary systems (two stars orbiting one another) in which one of the stars is a white dwarf. The other star can be anything from a giant star to an even smaller white dwarf.
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['Mercury.', 'Venus.', '[Earth]', 'Mars.', 'Jupiter.', 'Saturn.']
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['Brightness. Two characteristics define brightness: luminosity and magnitude. ... ', "Color. A star's color depends on its surface temperature. ... ", 'Surface Temperature. ... ', 'Size. ... ', 'Mass.']
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['Alidade.', 'Armillary sphere.', 'Astrarium.', 'Astrolabe.', 'Astronomical clock.', 'the Antikythera mechanism, an astronomical clock.', 'Blink comparator.', 'Bolometer.']
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['Pisces. [02:18]', 'Virgo. [04:12]', 'Capricorn. [05:24]', 'Scorpio. [08:42]', 'Libra. [09:08]', 'Taurus. [10:39]', 'Sagittarius. [14:51]', 'Leo. [14:54]']
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Characteristics used to classify stars include color, temperature, size, composition, and brightness. Stars vary in their chemical composition. Astronomers use spectrographs to determine the elements found in stars.
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['Corellia.', 'Kessel.', 'Iridium.', 'Savareen.', 'Vandor.']
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Familiar types of continuous variables are income, temperature, height, weight, and distance. There are two main types of continuous variables: interval and ratio.