"White Dwarf" Essays and Research Papers

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White Dwarf

known as critical mass. At this point the gas will be hot enough to glow. but ​ since  there is still a large amount of dust surrounding the gas there isn’t much radiation given off in the  visible spectrum(light humans can see)      Brown Dwarf:  A brown dwarf is when a protostar has not been able to reach critical mass, this means that  fusion was never able to begin, these objects range in size from 13 ­ 90 times the mass of Jupiter.      Main Sequence:  Most stars in the universe for most of ...

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Term Paper Outline Death of Stars

massive stars live for billions of years. When a star reaches about middle age, it starts fusing hydrogen into helium. Once it has run out of usable hydrogen that it can convert into helium, it can then take on one of several paths. It can lead to white dwarfs, novae, supernovae, neutron stars or even black holes. II. When a star begins the phase of dying, it is deprived of the energy that is needed to prevent it from collapsing in on its core. The size of the star depends on what happens next in...

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The Universe Life and Death of a Star

equilibrium? gravity; nuclear fusion, in the form of pressure 6. How hot a star is relates to the ______________ it emits. ___________ stars are hotter and ______________ stars are cooler. color; blue; red 7. What are red dwarfs? Why are they not seen in the night sky? Red dwarfs are small, common stars with lower surface temperature. They are not seen in the night sky because they are dim stars. 8. __________ is the fundamental thing that drives the life history of stars. Mass 9. Why do more massive...

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force, interstellar clouds of dust and gases condenses into a huge globule of gas and dust to form a glowing Protostar. If there is not enough material in the protostar, one possible outcome is a large, notvery-luminous celestial body called brown dwarf. Stage 3–If a protostar contains enough matter the central temperature reaches 15 million ˚C. At this temperature, Hydrogen nuclei start to fuse together to form Helium and the star begins to release energy. This energy radiation production prevents...

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Science of the Stars

diagram is a graph that can be used to classify stars such as giant or super giant stars, white dwarfs and main sequence stars. It can also determine the luminosity and spectral types of many stars. * The HR graph allows astronomers to sort stars into categories. These categories are Supergiants, Bright Giants, Giants, Subgiants and Main-sequence stars. The location of main sequence, red giants, blue giants, white dwarves, and red dwarves are within the H-R diagram most stars fall in the main sequence...

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Gilles Fontaine

university of Rochester in New York. (Fraser, Cain.2009) .He is a world expert on looking at aging stars called White Dwarf stars. A white dwarf star is the end stage of a star; it is about huge as the sun only a little bigger than the earth, it uses up its energy and becomes much smaller. After a billion years the star cools down and dies. Gilles Fontaine makes $97,320 per year in studying white dwarfs. His first interest took place when he became a star looker at the time he was a teen. Gilles Fontaine...

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indentified as being redshift sources of electromagnetic sources. Most quasars are known to be three billion light years away. When stars die they leave behind compact objects of some sort like white dwarf or neutron stars. White dwarf is a stellar remnant composed of electron degenerate matter, white dwarfs are the final evolution of a star, and they are very hot when formed but since they have no more energy they would eventually cool down. Dark matter composes the majority of the universe, Dark...

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The Science of the Stars Paper

Maxwell Telescope, (Tools, 2004). The Hertzspurg-Russel diagram was the most renowned diagram in astronomy. The diagram is a plot of absolute magnitude verses the coloration of the stars of the stars that will vary from the high temperature the blue-white stars would be on the left of the diagram and the weak temperature, the red stars are on the right, (Sparks, 2012). Practically all of the stars, with the involvement of the Sun, are concluded to be in the region defined as the Main Sequence. The...

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The Stellar Lives of Stars

star like the Sun never gets hot enough to fuse carbon in its core, because degeneracy pressure stops the gravitational collapse of its core. The star expels its outer layers into space as a planetary nebula, leaving its exposed core behind as a white dwarf that is supported by degeneracy pressure” (Bennett, 2013, p. 357). A high mass star fuses hydrogen into helium by way of the carbon, nitrogen, and oxygen cycle (CNO cycle). After exhausting its core hydrogen, a high mass star begins hydrogen...

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Science of Stars SCI/151

enables it to ultimately be removed. The core will then be a white dwarf, and the external regions will be planetary nebula. Conclusively, this white dwarf will discharge all of its residual heat, and will developing into a dark cold mass or a black dwarf (Villanueva, 2010). Where the Sun is in its Lifecycle The suns entire lifecycle is made up of the following stages: protostar, main sequence, red giant, and lastly a white dwarf. Currently, the age of the Sun is approximately 5 billion years;...

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