Population II stars are lower in "metals" than population I stars. By metals, astronomers mean anything other than hydrogen and helium.
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.
Helium and metals (which basically means any element heavier than helium) are formed in the star's core.
The difference is the metallicity. Population I stars have more metals - meaning any element heavier than hydrogen or helium (such as iron, oxygen, carbon, etc.).
Stars are classified based on their temperature, color, size, and brightness. The most common classification system is the Harvard spectral classification, which categorizes stars into groups ranging from hot and blue (O-type stars) to cool and red (M-type stars). This classification system helps astronomers understand the characteristics and evolution of stars.
Metals are relatively more abundant in old stars compared to new stars. This is because metals are created through the fusion of lighter elements in the cores of stars, so as stars age and go through multiple cycles of nucleosynthesis, they accumulate more metals. New stars, on the other hand, form from the remnants of previous generations of stars and may have lower metal content.
Population II stars are lower in "metals" than population I stars. By metals, astronomers mean anything other than hydrogen and helium.
The early Universe had hydrogen and helium, but no metals (heavier elements). Metals were produced by fusion in stars; in the case of a supernova, significant amounts of those metals get out of the star, and participate in the formation of future solar systems.
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.
shooting stars are meteors which are made from rock and other metals like iron
Metals are obtained primarily through mining, where ore deposits are extracted from the Earth's crust. These ores are then processed through techniques like smelting and refining to extract the metal in its pure form. Recycling of metals also plays a significant role in obtaining metals for everyday use.
Mainly hydrogen and helium. Stars also have small amounts of the so-called "metals", which is the name astronomers give to heavier elements.
Stars contain hydrogen and helium and some other minor constituents as metals.
Yes. Please note that when astronomers speak about "metals", or the "metallicity of a star", they usually mean any element other than hydrogen or helium - so these "metals" include carbon, oxygen, etc. However, they also include metals in the more common sense.
Metals are formed inside stars through nuclear fusion processes. When a star reaches the end of its life cycle and explodes in a supernova, it releases these metals into space where they eventually accumulate and form part of new stellar systems, including planets like Earth.
Helium and metals (which basically means any element heavier than helium) are formed in the star's core.
The difference is the metallicity. Population I stars have more metals - meaning any element heavier than hydrogen or helium (such as iron, oxygen, carbon, etc.).