[ad_1]
Ten years ago, ultraviolet light was detected at the edge of several spiral galaxies.
A glow that can only be traced to extremely large stars, which don’t have a chance to form in the outer regions of the galaxies where the glow has been discovered, because there is probably cold, dense gas there.
However, scientists around the world have so far had to find the explanation that stars still formed there. Massive stars have a relatively short lifespan and therefore don’t have the opportunity to move as much as they need to to end up on the edge of the galaxy.
Travel at 100 kilometers per second
That conclusion has put prior knowledge of how stars form in disturbances. But now three researchers at Lund University believe they are closer to an answer to the mystery.
– Now we can show that these stars may have been created in the same way as other stars, but they got a little nudge along the way, says Eric Andersson, an astronomy doctoral student at Lund University, in a press release.
A new study, using computer simulations, has concluded that stars have been “blown” out of the places where they first formed, due to the gravitational forces of other young stars.
“The speed of their involuntary separation is estimated to be about 100 kilometers per second.“Lund University writes in the press release.
The study is described as a further step towards a complete theory of how stars form and how galaxies evolve.
