Term
| A low-mass (Sun-like) star evolves in the following sequence |
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Definition
| Protostar, main-sequence, red giant, white dwarf |
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Term
| Low mass stars (Sun-like) do not form iron cores during their evolution because |
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Definition
| their cores never become hot enough to create iron by nucleosynthesis |
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Term
| In the late phase of evolution a star's core |
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Definition
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Term
| Triple-alpha fusion chain converts |
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Definition
| helium into carbon and oxygen |
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Term
| a Sun-like star exhausts its hydrogen fuel it takes ____ years to expand into red giant stars |
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Definition
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Term
| A planetary nebula is a result of |
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Definition
| ejection of stellar material from a star via stellar winds and excitation and ionization of atoms via UV radiation with subsequent recombination of electrons |
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Term
| A white dwarfs represents |
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Definition
| the final phase of evolution of a low-mass star, an Earth-sized body, ultra-dense C and O-rich star, and a star glowing at temperatures of 10,000–20,000 K |
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Term
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Definition
| the result of accretion of matter from a main-sequence stars or an evolved red giant star onto a white dwarf |
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Term
| In the final phase of evolution of a high-mass star |
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Definition
| further collapse of its core ignites carbon burning |
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Term
| :___ is the heaviest element produced in a series of fusion reactions inside of a high-mass stars (greater then 8 solar masses) |
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Definition
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Term
| The latest phase of evolution of a high-mass star (greater then 8 solar masses) results in formation of |
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Definition
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Term
| Sun and other young stars have high abundance of heavy elements contributing about |
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Definition
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Term
| The cooler the star on the main-sequence, the |
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Definition
| larger (wider) its convection region |
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Term
| Onion-like structure of the latest phase of a massive star is caused by the fact that |
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Definition
| hot plasma in central region burns heavier elements, while cooler plasma in outer regions of the star burns lighter elements |
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Term
| Supernova explosion occurs at the latest phase of evolution of |
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Definition
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Term
| Supernova explosion may create |
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Definition
| a super-dense degenerate core and a supernova remnant |
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Term
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Definition
| a super-dense degenerate core, very compact object, very hot (700,000K) object, and extremely fast spinning object |
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Term
| A millisecond pulsar star is observed when |
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Definition
| a neutron stars spins at the rate of 1000 rotation periods every second and beams of radiation formed along the magnetic pole sweep past the line of sight |
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Term
| Event horizon of a 10-solar-mass black hole is |
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Definition
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Term
| Every atom of a heavy element in a human body was formed |
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Definition
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