A study carried out by a team of researchers at the Instituto de Astrofísica de Canarias (IAC) has shown that an unusually thin structure of stars, recently discovered by the Hubble Space Telescope, could be a galaxy seen edge-on. This finding goes against the original interpretation in which a flee
, and this very long narrow structure has given rise to several explanations of its origin.
According to a controversial initial hypothesis, this trail of stars could be the result of the passage of a supermassive black hole through a huge cloud of gas. This idea quickly fired the imagination of the astronomical community, because it needs a large set of complex exceptional circumstances. For this reason, several scientific teams have continued to explore different, and less exotic scenarios which can explain the observations.
Comparison between this “object” and an edge-on galaxy in the local Universe : images the intensity along the track and its rotational velocity . This object and IC5249 turn out to be extremely similar in all their physical parameters, which supports the idea that the “object” is really an edge-on galaxy. Credit: IAC
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