Gas Collisions Prevent the Formation of Stars in Galactic Bars

The NGC carries an impressive trait in the form of a bar that is present in the middle of the galactic core. However, despite an excess of available material, stars will not form in this region.

A team of researchers has harnessed advanced computer simulations in an attempt to learn more about this phenomenon, which is also present among other galaxies that have prominent bars. It is well-known that stars will form from the mixture of cosmic as and dust.

The gas clouds present near the bar clash intensely, and the sheer force of the impact prevents their accumulation into stars.

It is thought that such collisions have also limited the formation of stars immediately after the Big Bang. Most massive stars will start their lives by releasing a bright blue light.

Intense gas collisions prevent the formation of stars in galactic bars

Still, due to their increased size, they have a shorter lifespan. As no new stars form, the population will be dominated by yellow, orange, and red giant stars.

NGC 1300 resides at more than 68 million light-years away from Earth, in the Eridanus constellation. It is a spiral galaxy whose shape appears to follow an inverted S. Spiraling blue arms can be seen around the galaxy while the center is dominated by yellow and orange stars.

That means that new stars continue to surface In the arms, but very few can be found in the bar, which has an approximate length of 50,000 light-years. The scientists decided to conduct a simulation focused on the orbit of the gas clouds that can be found around the center of the galaxy.

While the clouds tend to follow a circular path in most areas, the gravitational pull exerted by the stars present in the bar will force the clouds to follow a different path and collide. In the aftermath, the resulting turbulence will hinder stat formation. A paper was published in a scientific journal.

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