The Pleiades in X-rays

[M45 in X-ray, Rosat] [PNG]

Rosat image of the Pleiades in X-rays. Colors represent different X-ray colors (energy bands): lowest energies red, intermediate green, highest blue. The optically brightest stars are indicated by the green squares. The brightest X-ray stars are those with the hottest atmospheres or coronas.

Credit: Thomas Preibisch, Würzburg (Germany)

  • This image was featured as Astronomy Picture of the Day (APOD) March 18, 1997, April 5, 1998 and August 28, 1999
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    Hartmut Frommert
    Christine Kronberg
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    Last Modification: January 3, 2001