Is it possible for a star cluster to change it metallicity during time by YSO's appearance? -Space

Is it possible for a star cluster to change it metallicity during time by YSO's appearance? -Space
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1 Answer

Answer :

yes,Since all the stars in a cluster formed at the same time, they are all the same age. A very young cluster will have a HR diagram with a cluster of T-Tauri stars evolving towards the main sequence. As time passes the most massive stars at the top of the main sequence evolve into red giants.When stars are born they develop from large clouds of molecular gas. This means that they form in groups or clusters, since molecular clouds are composed of hundreds of solar masses of material. After the remnant gas is heated and blow away, the stars collect together by gravity. During the exchange of energy between the stars, some stars reach escape velocity from the protocluster and become runaway stars. The rest become gravitationally bound, meaning they will exist as collection orbiting each other forever.  thank you
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he first space rocket brought back to earth after orbiting the moon -Space

Description : he first space rocket brought back to earth after orbiting the moon -Space

Last Answer : Zond-5 is the right answer

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Description : The first unmanned moon buggy to explore surface of the moon -Space

Last Answer : Lunakhod-1 (U.S.S.R.) is

The first space-vehicle to orbit the moon -Space

Description : The first space-vehicle to orbit the moon -Space

Last Answer : Luna-10 (U.S.S.R.) is answer

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Description : The first country to send man to the moon -Space

Last Answer : This includes both crewed and robotic missions. The first human-made object to touch the Moon was the Soviet Union's Luna 2, on 13 September 1959. The United States' Apollo 11 was the first crewed mission to land on the Moon, on 20 July 1969.

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Description : The first spaceship which carried three American astronauts to land two of them on the moon -Space

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Description : The first manned space vehicle to land on the moon -Space

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