Astronomers inspect two galactic open clusters

Tomasz Nowakowski is a member of the physics.org community.

Astronomers from Turkey used the Tubitak National Observatory to look at Berkeley68 and Stock 20. The study's results were presented on the arXiv pre-print server.

A group of stars are bound to each other by a giant cloud of atoms. More than a thousand of them have been found in the Milky Way, and scientists are still looking for more. Studying them in detail could help us understand the formation and evolution of our universe.

Berkeley 68 is a Trumpler type IV2p OC with an estimated age of 2.1 billion years, which is some 11,000 light years away from Earth. It has a low central stellar concentration.

The Trumpler type II2p OC is found in Stock 20. The cluster is located in the middle of the universe. It is thought to be 19 million years old.

A research project is being conducted by a team of astronomer led by the Istanbul University, Turkey. They looked at Berkeley 68 and Stock 20 by analyzing the data from two different sources.

The Berkeley 68 and Stock 20 star clusters were analyzed. The paper stated that this was based on ground and space based data.

The team determined the limits for the OCs. The light years for Berkeley 68 and Stock 20 were calculated. More than 200 stars for Berkeley 68 and 51 stars for Stock 20 were identified as probable members.

The age and distance of Berkeley 68 were found to be approximately 9,800 light years and 2.4 billion years old. There is a metallicity of -0.13 and reddening of 0.52. The cluster came from a relatively metal-poor region of the Milky Way, based on the integration of Berkeley 68.

The results show that Stock 20 is 50 million years old. The cluster's reddening was thought to be around 0.4 and its metallicity was found to be around -0.05.

The relaxation times of Berkeley 68 and Stock 20 were calculated to be 32.55 and 23.17 million years, which is less than the ages of the two.

There is an investigation of open clusters Berkeley 68 and Stock 20. There is a book titled "arxiv.2211.09825."

Journal information: arXiv

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