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what occurs if a white dwarf exceeds the chandrasekhar limit?

Instead, Eddington's heavy-handed intervention lent weighty support to the conservative community astrophysicists, who steadfastly refused even to consider the idea that stars might collapse to nothing. Michael Nauenberg, e. c and d the expelled outer envelope of a medium mass star.Mass can flow from one star in a binary system to its companion through the first _________ point.The age of a star cluster can be determined from the _________ of the cluster.A gas in which the pressure no longer depends on the temperature of the gas is said to be _________.The maximum mass of a white dwarf is _________ solar masses.Electrons moving in a strong magnetic field emit _________ radiation.What observations confirm the existence of protostars?What evidence do we have that some stars lose mass?Why can't lower main sequence stars become giant stars?How does a gas cloud become hot enough to ignite nuclear reactions?Explain what keeps the nuclear reaction in a star under control.What are the four laws of stellar structure discussed in class?Name the three methods of energy transfer discussed in class.What observations indicate the presence of dust in the interstellar medium?If the sun and stars are supported by gas pressure, what supports a white dwarf?If white dwarfs have exhausted their fuel, why are they hot?Why do nuclear reactions in a star occur only near its center?The _________ of the galaxy contains population I stars, open clusters, and gas clouds.The rotation curve of the galaxy provides evidence for the existence of the _________ which extends beyond the halo of the galaxy._________ are groups of 100,000 to 1,000,000 population II stars firmly bound by gravity.The _________ states that the universe is both isotropic and homogeneous.The _________ are theories that unify the electromagnetic, weak and strong forces at extremely high energiesWhat is the difference between a population I star and a population II star?Population I: New stars, contain heavy elements, primarly located in the disc of the galaxy.

A. occurs when a white dwarf's mass exceeds the Chandrasekhar limit B. is the result of helium flash C. is characterized by a spectrum that shows hydrogen lines D. occurs when the iron core of a massive star collapses E. c and d "Edmund C. Stoner and the Discovery of the Maximum Mass of White Dwarfs," The Chandrasekhar limit came into greater prominence in astrophysics with the recognition of its role in Type-1a supernovae. The Chandrasekhar limit is the maximum mass of a stable white dwarf star. The currently accepted value of the Chandrasekhar limit is about 1.4 M☉ (2.765×10 kg). b. is the result of helium flash. As a result, Chandra's work was almost forgotten.The core of a star is kept from collapsing by the heat generated by the If a main-sequence star is not too massive (less than approximately 8 A strong indication of the reliability of Chandrasekhar's formula is that the Since the observation of the Champagne Supernova in 2003, several more Sean Carroll, Ph.D., Caltech, 2007, The Teaching Company, Eric G. Blackman, "Giants of physics found white-dwarf mass limits", the material is no longer gravitationally bound to the star.a. is characterized by a spectrum that shows hydrogen lines.Due to the dust in the interstellar medium, a star will appear to an observer on Earth to beMassive stars cannot generate energy through iron fusion because__________ is the thermonuclear fusion of hydrogen to form helium operating in the cores of massive stars on the main sequence.Stars with masses between 0.4 Mmc030-1.jpg and 4 Mmc030-2.jpga. Helium fusion does not begin until the star has entered the giant region of the HR diagramThe thermal motions of the atoms in a gas cloud can make it collapse to form a protostarNo known white dwarf has a mass greater than the Chandrasekhar limitEven in degenerate matter, pressure depends on temperatureBecause more massive stars have more gravitational energy, they can fuse heavier nuclear fuels.Hydrostatic equilibrium refers to the balance between weight and pressureA nova destroys the star and leaves behind a white dwarfType II supernovae are believe to occur when the cores of a massive star collapseThe dust in the interstellar medium can make distant stars look redder than they really areThe sun has a core in which energy travels outward primarily by radiationGiant and supergiant stars are rare because that stage of stellar evolution is shortStars less massive than 0.4 solar mass never become giant starsOnce a star ejects a planetary nebula, it becomes a white dwarfNinety percent of all stars fuse helium to form carbon and lie on the main sequence.Young star clusters have bluer turn-off points than old clustersc. In the nonrelativistic case, electron degeneracy pressure gives rise to an As the mass of a model white dwarf increases, the typical energies to which degeneracy pressure forces the electrons are no longer negligible relative to their rest masses. Chandrasekhar limit a white dwarf gaining mass in a binary star system exceeds the Chandrasekhar limit of 1.4M and collapses. the white dwarf's mass is just slightly less 1.4 M, the infalling matter will cause the mass to exceed the Chandrasekhar Limit. As the collapse begins the temperature and density shoot up and the entire star is destroyed. These supernovae are thought to occur when a white dwarf accretes enough mass to tip it over the Chandrasekhar limit, leading to catastrophic collapse. they give us a method to test the our theories and models of stellar evolution.The lowest mass object that can initiate thermonuclear fusion of hydrogen has a mass of aboutWhen material expanding away from a star in a binary system reaches the Roche surfacec. The limit was first published by Wilhelm Anderson and E. C. Stoner, and was named after Subrahmanyan Chandrasekhar, the Indian-American astrophysicist who improved upon the accuracy of the calculation in 1930, at the age of 19. c. is characterized by a spectrum that shows hydrogen lines. At that point the process of inverse beta decay occurs, and the white dwarf …

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