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Puchinita5
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Homework Statement
I understand that [Fe/H] ratios can be used to describe metallicity in a galaxy... but I'm having trouble understanding what [element/Fe] ratios should tell you.
Anyone have an idea?
Puchinita5 said:am i heading in the right direction?
Astronomers use iron ratios in galaxies as indicators of the age and chemical evolution of the galaxy. Iron is created through nuclear fusion in stars, so the amount of iron present can tell us about the star formation history of the galaxy.
Astronomers use spectroscopy to measure the amount of iron present in a galaxy. This involves analyzing the light that is emitted from the galaxy and looking for specific signatures of iron in the spectrum.
Yes, astronomers have observed that galaxies with higher iron ratios tend to be older and have had more star formation activity. This is because as stars age and die, they release more iron into the galaxy, increasing the overall iron ratio.
Yes, iron ratios in galaxies can give us insight into the early stages of the universe's formation. As the universe expanded and cooled after the Big Bang, the first stars formed and produced iron. By studying the iron ratios in distant galaxies, astronomers can learn about the chemical composition of the early universe.
Iron ratios in galaxies tend to increase over time as more stars form and die, releasing more iron into the galaxy. However, there can be variations in this trend depending on the specific star formation history and chemical evolution of each galaxy.