Remote ring Galaxy discovered

The non amateur stuff. Hawking, black holes, that sort of thing

Moderators: joe, Brian, Guy Fennimore

Post Reply
brian livesey
Posts: 5838
Joined: Mon Jan 09, 2006 11:05 am
Location: Lancashire

Remote ring Galaxy discovered

Post by brian livesey »

Ring galaxies have been observed for some time. What makes them different is that they've been hollowed out in collisions with other galaxies, leaving them devoid of nuclei.
RR5519 is different in that it lies at the immense distance of 11 billion light years ( astrophysicists work in parsecs ), that's at a distance of just 3 billion years after the supposed Big Bang.
R5519 was discovered using spectroscopic data from the Keck Telescope and images recorded by the Hubble Space Telescope. The ring galaxy's hollowed out centre has a diameter 2 billion times greater than the distance of the Earth from the Sun, and the ring is producing stars at 50 times the rate of the Milky Way.
The discovery is expected to challenge current theories about the formation of galaxies and how their structures evolve. The discovery was published in the journal Nature Astronomy.
Post Reply