Aldebaran emission spectrum

Aldebaran emission spectrum

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Credit: DR JUERG ALEAN/SCIENCE PHOTO LIBRARY

Caption: Aldebaran emission spectrum. This multicoloured band is obtained by recording what wavelengths of light (each seen as a different colour) are emitted by the red giant star Aldebaran. White light is a combination of a range of light wavelengths and can be separated into its components using a prism. The dark vertical lines (called Fraunhofer absorption lines) show that some wavelengths of light emitted outwards from the hot interior of the star were absorbed by atoms within the cool gases that make up the star's outer layer.

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Keywords: absorbed, absorption, absorption lines, aldebaran, alpha tauri, astronomical, astronomy, astrophysical, astrophysics, band, bands, cosmology, emission, emission spectrum, emitted, fraunhofer absorption line, fraunhofer lines, k-type star, light, line, lines, multicolored, multicoloured, optics, physics, red giant star, space, spectrum, star, stellar, universe, wavelengths, white light

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