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Spectrum of a star

Spectrum of a star


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Science Photo Library

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Spectrum of a star

Spectrum of Arcturus. Visible light spectrum of the orange giant star Arcturus. The spectrum is created by allowing light exiting a telescope to pass though a prism, a technique called objective prism spectroscopy. Many dark absorption lines may be seen especially in the blue region. Spectra such as this help astronomers understand the elemental composition of stars and other objects. Arcturus (alpha Bootis) is a spectral class K star in the constellation Bootes, and the fourth- brightest star in the night sky

Science Photo Library features Science and Medical images including photos and illustrations

Media ID 6444251

© DR JUERG ALEAN/SCIENCE PHOTO LIBRARY

Astrophysics Cosmology Field Spectrum Star Star Field Stars Arcturus


EDITORS COMMENTS
This print showcases the mesmerizing spectrum of Arcturus, an orange giant star located in the constellation Bootes. Through the technique of objective prism spectroscopy, this image unveils a stunning array of colors representing the visible light spectrum emitted by this celestial body. By allowing light to pass through a prism after exiting a telescope, astronomers are able to observe and analyze various dark absorption lines present in the blue region. These distinct absorption lines, known as Frauenhofer lines, provide valuable insights into the elemental composition of stars and other cosmic entities. They serve as crucial tools for scientists studying stellar physics and seeking to unravel the mysteries of our vast universe. Arcturus itself holds significant astronomical importance as it is classified as a spectral class K star and ranks as the fourth-brightest star in our night sky. Its radiant presence amidst a field of countless stars adds depth and allure to this extraordinary photograph. As we delve into this image captured by Science Photo Library, we are reminded of humanity's relentless pursuit of knowledge about our cosmos. This snapshot serves not only as a testament to scientific progress but also ignites curiosity within us all about what lies beyond our earthly realm.

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