parejkoj,

You are confusing the two rings of stars that encircle the galactic core which are farther from the galactic core with the s-stars which are referred to as the “paradox of youth stars”.

I agree, that in situ formation is possible for the two rings of stars, however as the authors of the ring paper note, a collision of two galactic gas clouds is required to explain the observation, which is possible, but unlikely. Requiring special condition weakens the hypothesis. As noted above there is no explanation as to why the stars all formed at the same time, which seems to invalidate the hypothesis, if the hypothesis is required to explain all observations. Perhaps you have an explanation, for the simultaneous formation paradox, which is a problem for each group of stars in the core area as they formed very, very, rapidly at specific intervals.

There are two rings, at 90 degrees to each other, formed at same time based on analysis of the star life. The the rings of stars rotate in the opposite direction.

There is as of yet no conventional explanation for the “paradox of youth stars”. Authors have also appealed to another gas cloud collision; however, tidal forces in that s-star area are two too high even with a gas cloud collision to create the necessary conditions for large star formation.

There is no explanation provided for the unusual number of large stars formed in both locations. But I guess if you really want to believe, the gap between observation and theory isn’t a problem.