Why do Population II stars contain lesser amounts of metals than population I stars?
Formation of the observable stars The oldest observed stars, known as Population II, have very low metallicities; as subsequent generations of stars were born they became more metal-enriched, as the gaseous clouds from which they formed received the metal-rich dust manufactured by previous generations.
What is the difference between a population 1 and Population II stars in what sense can the stars of one population be regarded as the children of the other population?
In what sense can the stars of one population be regarded as the children of the other population? Population I stars are those are metal rich. Population II stars are those that are metal poor. Population I stars formed from expelled material of Population II stars.
What is the difference between population 1 and 2 stars?
Population I stars are metal rich stars; they contain about 2-3 percent metals. Intermediate Population I stars (like the Sun) are located through the disk. They are slightly less metal rich. Population II stars are metal poor stars; they contain about 0.1 percent metals.
How are Population II stars different than the sun a population I star?
How are population II stars different than the sun, a population I star? Population II stars are lower in metals than population I stars. Which of the following are problems facing the traditional hypothesis of the formation of the Milky Way? Not all globular clusters have the same age.
Why are metals less abundant in older stars than in younger stars?
Why are metals less abundant in older stars than in younger stars? Metal-poor stars formed longer ago when there wasn’t as many supernovae to supply them with metal, at this time the galaxy’s motions weren’t organized randomly shaping orbits.
Why do younger stars have more heavy elements?
Why do younger stars have heavier elements than old stars? Because young stars are formed from the explosions of other stars, and those stars build up layers over time and have these heavy elements in them. So when they explode, you mainly have those heavy elements in molecular clouds for stars to form out of those.
How are population I stars different than Population II stars quizlet?
Population I stars include the sun and tend to be luminous, hot and young, concentrated in the disks of spiral galaxies. Population II stars tend to be found in globular clusters and the nucleus of a galaxy. They tend to be older, less luminous and cooler than Population I stars.
What are Population I stars How do they differ from Population II stars quizlet?
Population I stars are usually the blue younger stars. They orbit in the disk and they are relatively rich in metals. Population II stars are the red, older stars that lies in the bulge and halo of the Galaxy. They orbits in the elliptical orbits in the halo.
What do astronomers consider metals or heavy elements quizlet?
What do astronomers consider “heavy elements”? All elements besides hydrogen and helium.
Which is more metal rich population I or population II?
They are slightly more metal rich than the extreme Population II stars, but less metal rich than the intermediate Population I stars. The differences in metalicity and age between the two Populations suggests that the Population II stars formed early during the formation of the Galaxy.
How is the stellar population determined by metal content?
Stellar population. By definition, each population group shows the trend where decreasing metal content indicates increasing age of stars. Hence, the first stars in the universe (very low metal content) were deemed Population III, old stars (low metallicity) as Population II, and recent stars (high metallicity) as Population I.
Where are population II stars found in the Galaxy?
Population II stars are metal poor stars; they contain about 0.1 percent metals. They are found in the spherical component of the Galaxy (the halo and the bulge). They have randomly tipped, elliptical orbits which can plunge through the disk of the Galaxy and which take some of them (the halo stars) to large distances from the center.
Where are intermediate Population 1 and 2 stars located?
Intermediate Population I stars (like the Sun) are located through the disk. They are slightly less metal rich. Population II stars are metal poor stars; they contain about 0.1 percent metals. They are found in the spherical component of the Galaxy (the halo and the bulge).