Format:
1 Band (verschiedene Seitenzählungen)
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Illustrationen, Diagramme
Content:
During a dark night, it is possible to observe thousands of stars by eye. All these stars are located within the Milky Way, our home. Not all stars are the same, they can have different sizes, masses, temperatures and ages. Heavy stars do not live long (in astronomical terms), only a few million years, but stars less massive than the Sun can get more than ten billion years old. Such small stars that formed in the beginning of the Universe still shine today. These ancient stars are very helpful to learn more about the early Universe, the First Stars and the history of the Milky Way. But how do you recognise an ancient star? Using their chemical fingerprints! In the beginning of the Universe, there were only two chemical elements: hydrogen and helium (and a tiny bit of lithium). All the heavier elements like carbon, calcium and iron were only made later within stars and their explosions. The amount of chemical elements in the Universe increases with the number of stars that are born, evolve and explode. Stars that form later are born ...
Note:
kumulative Dissertation
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Dissertation Universität Potsdam 2020
Additional Edition:
Erscheint auch als Online-Ausgabe Arentsen, Anke Galactic archaeology with the oldest stars in the Milky Way Potsdam, 2020
Language:
English
Keywords:
Hochschulschrift
Author information:
Christlieb, Norbert 1966-
Author information:
Steinmetz, Matthias 1966-