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Stars are grouped into three different populations based on their metallicity.
Population III stars (first protostar) are made up entirely of hydrogen and helium (with a very small amount of lithium). These stars created the first 26 elements up to iron via Nucleosynthesis. They are hypothetical, and were supposed to exist only in the early Universe, when there were only light elements. None exist today.
Population II stars (Early protostar) are made up of the remnants of a population III star and will contain relatively small amounts of metals. These stars, via a supernova created the rest of the elements, including gold.
Population I star (Current, including our Sun) are made up of all of the above and will have the highest metal content.
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Which are the oldest stars in the Milky Way population 1 or 2 stars?
Population II stars are the oldest in our Milky Way. Population III stars were the first stars in the Universe, but have yet to be discovered. See related question
How are population II stars different than the Sun a population I star?
Population II stars are lower in "metals" than population I stars. By metals, astronomers mean anything other than hydrogen and helium.
How do Population One and Population Two stars compare to each other?
Population I stars have more metals (heavier elements), and are generally younger, than the Population II stars. It is postulated that there are still older Population III stars, that have even less metals and are even older, but none have been discovered yet.
Where are the Population One and Population Two stars located in the Milky Way Galaxy?
Population I stars (metal-rich stars) are common in the Milky Way's spiral arms; Population II stars are more common in the galactic halo.For more details, you may want to read the Wikipedia article on "Metallicity". Note that in astronomy, "metal" is an informal name for elements other than hydrogen and helium. This usage is quite different from the usage in chemistry.
What population stars are found in a sprial galaxy?
Population I (High metal content) stars are generally found in the arms of spiral galaxies, whereas population II (Medium metal content) are generally found towards the centre of the galaxies.
Which are the oldest stars in the Milky Way population 1 or 2 stars?
Population II stars are the oldest in our Milky Way. Population III stars were the first stars in the Universe, but have yet to be discovered. See related question
How are population 1 stars and population 2 stars different?
Population 1 stars are typically young and metal-poor, found in the halo of a galaxy and formed from pristine gas. Population 2 stars are older and metal-rich, located in the disk of a galaxy and formed from gas enriched by supernova explosions of earlier stars.
What are the two population stars in the milky way?
Population I stars are young and luminous like the Sun. Population II stars consist of globular clusters that are generally much older.
How are population II stars different than the Sun a population I star?
Population II stars are lower in "metals" than population I stars. By metals, astronomers mean anything other than hydrogen and helium.
What contain most of the heavier elements in the Milky Way population stars 1 or 2?
Population I stars
How do Population One and Population Two stars compare to each other?
Population I stars have more metals (heavier elements), and are generally younger, than the Population II stars. It is postulated that there are still older Population III stars, that have even less metals and are even older, but none have been discovered yet.
The heavier elements in the milky way are contained in population 1 stars or 2?
Population 1 stars are metal rich stars. See related question.
The group of stars that are bluer and located in the disk of galaxies?
Population I stars
What are the oldest types of stars in the universe?
The oldest stars are classified as population III stars [See related question]
What type of stars are the oldest in the universe?
The oldest stars are classified as population III stars [See related question]
Where can young metal-rich stars be found in the milky way?
The so-called "Population I" stars are found in the galactic suburbs, which is where we live. Population II stars are concentrated toward the galactic bulge.
The brightest stars in aging globular clusters will be?
The hottest stars. Generally, globular clusters contain mainly old stars, population II stars
