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Computer Model Simulation Explains Star Distributions in Galaxy Discs

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A galaxy.

A new computer model is showing astrophysicists how gas clouds contribute to the exponential fade in galaxy discs with regard to star distribution.

Credit: Flickr

Researchers at Iowa State University used a new computer model to show the impact of gas clouds on the exponential fade in galaxy discs in an effort to explain star distributions.

Using a GADGET 2 computer model, the researchers simulated the evolution of a galaxy disc with the presence of massive gas clouds.

The model helped support previous theories, including analytic theories that favor the Jeans/Poisson equations zero entropy gradient solution.

Iowa State's Jian Wu said the model explains the formation of exponential discs all across the universe.

Said Wu, "Close encounters between stars and clumps can produce abrupt changes in stellar orbits and shift stars radially. These events can make trajectories more eccentric, but many leave eccentricities little changed."

From Iowa State Daily
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