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Why is the presence of large amount of helium in the spectrum of a star considered to be a sign of age?
Wiki User
∙ 15y ago
Stars fuse hydrogen into helium, and then fuse the helium into carbon. For a star to have more than about 50% helium, we know that the star has already burned up half of its natural fuel, and that the end is near.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoThe most abundant element in the Universe is hydrogen, so it is to be expected that usually, a star will start its life with a large percentage of hydrogen. As the star gets older, more and more hydrogen will be converted to helium.
The most abundant element in the Universe is hydrogen, so it is to be expected that usually, a star will start its life with a large percentage of hydrogen. As the star gets older, more and more hydrogen will be converted to helium.
The most abundant element in the Universe is hydrogen, so it is to be expected that usually, a star will start its life with a large percentage of hydrogen. As the star gets older, more and more hydrogen will be converted to helium.
The most abundant element in the Universe is hydrogen, so it is to be expected that usually, a star will start its life with a large percentage of hydrogen. As the star gets older, more and more hydrogen will be converted to helium.
Wiki User
∙ 12y agoIm no astrophysicist but an older star would consume more of its hydrogen over time in comparison to helium through its fusion process. Over time concetrations would change resulting in a higher helium to hydrogen ratio.
Wiki User
∙ 13y agoA star "burns" hydrogen and creates helium; the helium is sort of like the ashes in the bottom of the fireplace; what's left over from normal stellar hydrogen fusion.
So you would probably expect that there would be more helium "ash" at the end of the star's life than at the beginning.
Wiki User
∙ 14y agoThe most abundant element in the Universe is hydrogen, so it is to be expected that usually, a star will start its life with a large percentage of hydrogen. As the star gets older, more and more hydrogen will be converted to helium.
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What is the element first found in the Sun's spectrum?
Helium
What type of spectrum do we see from the sun?
some of the light from the corona produces a continuous spectrum that lacks absorption lines. however the type is absorption spectrum
Is the ratio of the amount of hydrogen and helium in the sun increasing or decreasing?
Since hydrogen atoms in the sun are fused into helium atoms, the amount of helium is increasing and the amount of hydrogen is decreasing.
What is the first element found in the Sun's spectrum then on Earth 30 years later?
helium
Will the amount of hydrogen and helium in the sun increase or decrease over the next few million years?
The amount of hydrogen will decrease and the amount of helium will increase.
Why is the presence of large amounts of helium in the spectrum of a star generally considered a sign of age?
Stars begintheir lives burning hydrogen and converting it to helium. If there are large amounts of helium in a stellar spectrum, it would indicate that the star has been making helium for a long time - hence age.
Why is the presence of large amounts of helium in the spectrum of a star generally considered to be asign of age?
When stars form they are mostly made up of hydrogen. Main sequence stars derive their energy from converting hydrogen in helium in the cores. As the star ages the ration of helium to hydrogen increases. A star with a lot of helium there for must be old. When the hydrogen has exhausted in the core the star begins to collapse due to gravity until it reaches a point that the temperature of the core is sufficient to fuse Helium into Carbon.
How does the spectrum of helium differ from the spectrum of white light from the Sun?
what r u on about
What is the element first found in the Sun's spectrum?
Helium
Does helium mean the first?
Helium is derived from the Greek for the sun, helios, as it was discovered in the spectrum of the sun
Does helium have an explosion?
Helium is a neutral gas and will not explode by itself or in the presence of Oxygen.
How was helium dicovered?
It was discovered by finding lines in the spectrum of the Sun that corresponded to calculations for the electronic transitions in helium.
How did Sir Norman Lockyer discover helium?
He observed helium spectroscopically as a yellow line in the spectrum of the sun.
What type of spectrum do we see from the sun?
some of the light from the corona produces a continuous spectrum that lacks absorption lines. however the type is absorption spectrum
What has the author Frank Leigh Robeson written?
Frank Leigh Robeson has written: 'The infra-red spectrum of helium in a long discharge tube ..' -- subject(s): Accessible book, Infrared spectra, Helium 'The infra-red spectrum of helium in long discharge tubes ..' -- subject(s): Helium, Infrared spectra, Spectra
Is the ratio of the amount of hydrogen and helium in the sun increasing or decreasing?
Since hydrogen atoms in the sun are fused into helium atoms, the amount of helium is increasing and the amount of hydrogen is decreasing.
What is helium considered as?
Helium is considered as totally inert and unreactive. It is the first element of the noble gases.
