Tuesday, May 17, 2016

Spiral Seyfert Galaxy NGC 6814

Spiral Seyfert Galaxy NGC 6814
Click on the image for full resolution (7.3 MB)

Spiral galaxies together with irregular galaxies make up approximately 60% of the galaxies in the local Universe. However, despite their prevalence, each spiral galaxy is unique – like snowflakes, no two are alike. This is demonstrated by the striking face-on spiral galaxy NGC 6814, whose luminous nucleus and spectacular sweeping arms, rippled with an intricate pattern of dark dust, are captured in this Hubble Space Telescope image. NGC 6814 has an extremely bright nucleus, a telltale sign that the galaxy is a Seyfert galaxy. These galaxies have very active centers that can emit strong bursts of radiation. The luminous heart of NGC 6814 is a highly variable source of X-ray radiation, causing scientists to suspect that it hosts a supermassive black hole with a mass about 18 million times that of the Sun. As NGC 6814 is a very active galaxy, many regions of ionised gas are studded along its spiral arms. In these large clouds of gas, a burst of star formation has recently taken place, forging the brilliant blue stars that are visible scattered throughout the galaxy.
Image Credit: ESA/Hubble and NASA
Acknowledgement: Judy Schmidt (Geckzilla)
Image enhancement: Jean-Baptiste Faure

1 comment(s):

Osmar Cesar Pires said...

Ilustríssimo Senhor (a) estou promovendo o meu livro Orbe Teorum .
Através do, com o nome do livro, o livro contem novas teorias sobre formação das galáxias e dos sistemas planetários e como a vida surgiu na Terra, com um novo enfoque topológico e metodológico de campos de partículas.
Meus agradecimentos
Osmar Cesar Pires

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