This newly released ESO image of the week shows the Vela ring galaxy, visible as a bright core surrounded by a baby blue halo.
As the name suggests, the Vela ring galaxy — located in the southern constellation of Vela (The Sails) — is notable due to its compact core and large circular belt of gas and stars.
It is thought that ring galaxies like this are created when larger galaxies are punctured by a smaller galactic aggressor, which, passing through the heart of its more sizeable victim, triggers a shock wave that spreads outwards. This pushes gas to the galaxy’s periphery, where it begins to collapse and form new stars. The Vela ring galaxy is unusual in that it actually exhibits at least two rings, suggesting that the collision was not a recent one.
This picture also features a galaxy known as ESO 316-33, seen just above and to the left of the Vela ring galaxy, and a bright star known as HD 88170.
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2 Comments
One again the specter of a fictional “collision” has rent another ‘science’ report. If you are not willing or worthy of a discussion about emergence
systems then just leave the deception to the peer ring cabals who do it
for a living. “Collision”s of stars and their collective objects don’t happen but you are welcome to put your hypothesis to a test – unlike your willingness
to accept emergent systems.
The Vela Ring Galaxy is not in Vela. It’s in Antila, but close to the border with Vela. Not sure why but perhaps the IAU changed the boundaries after it was named. Or perhaps precession has moved it across the boundary.jjjj