(Submitted November 12, 1996)
I was looking on the Internet for in ashesation on the opus of stars and was not strikeing some(prenominal) information. I looked at a site you put together and thought maybe you might know where I can find whatever good information. If you bedevil the opportunity I would appreciate any help you might have.
The Answer
The area you are interested in, the composition of stars, is a very important and interesting field for astronomers. It touches on many related questions, such as how do stars form? How do stars shine? Why are the amounts of different elements in the Universe the percentage that they are? It is not easy to find WWW references simply on chemic composition of stars, nevertheless if you pick one of the related areas of interest to you then it is manageable to find some information about this on the WWW.
Stars suffer their life when an ordinary dense cloud of interstellar emergence becomes unstable and begins to collapse. The composition of such a cloud of weigh determines the composition of the star which results from the collapse. Lets start by looking at the chemical composition of the star we know the most about, our Sun.
Astronomers matter the spectrum of the Sun to determine its chemical composition. In the visible realm alone, from 4000 to 7000 angstroms (10-10 meters), there are thousands of absorption lines in the solar spectrum.
These lines have been cataloged, and tell us that there are 67 chemical elements identified in the Sun. There are probably tied(p) more elements in the Sun that are present in such a small amount that our instruments cant detect them. present is a table of the 10 most common elements in the Sun:
Element Abundance (% of total Abundance
be of atoms) (% of total mass)
Hydrogen 91.2 71.0
Helium 8.7 27.1
Oxygen 0.078 0.97
Carbon 0.043 0.40
northward 0.0088 0.096
Silicon 0.0045 0.099
Magnesium 0.0038 0.076
Neon 0.0035 0.058
Iron 0.030 0.014
Sulfur 0.015...If you compulsion to get a full essay, order it on our website: Ordercustompaper.com
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