Spiral galaxy NGC 4945

Numéro d’image : 11591515
Spiral galaxy NGC 4945
Spiral galaxy NGC 4945. Optical image of the galaxy NGC 4945,a Seyfert 2 spiral galaxy in the constellation Centaurus. Seyfert galaxies have an unusually bright nucleus. The nucleus of this galaxy is a Seyfert type 2,which does not appear unusually bright at visible wavelengths,but is a powerful emitter of infrared radiation. The power source for a Seyfert nucleus is thought to be a large black hole. NGC 4945 hides a supermassive black hole behind the thick,ring-shaped structure of dust visible in this image. Image obtained by the Danish telescope at the ESO (European Southern Observatory) La Silla Observatory,Chile
Licence : Droits gérés
Crédit: Science Photo Library / EUROPEAN SOUTHERN OBSERVATORY
Taille de l’image : 5409 px × 3278 px
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Property Release : Non requis
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