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| courses:phy100:7 [2023/11/25 23:07] – asad | courses:phy100:7 [2023/11/25 23:08] (current) – [3.2 High-mass stars] asad | ||
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| We are born to die. Life is nothing but a bridge between the stations of birth and death. Same is true for stars. What happens to a star as it goes from birth to death through the bridge of life? | We are born to die. Life is nothing but a bridge between the stations of birth and death. Same is true for stars. What happens to a star as it goes from birth to death through the bridge of life? | ||
| - | {{: | + | {{: |
| It depends on the mass of the star as shown above. Key events in the life of a low-mass and medium mass star (A, F, G, K and M-types) are shown above, and key events in the life of a high-mass star (O and B-types) are shown below. | It depends on the mass of the star as shown above. Key events in the life of a low-mass and medium mass star (A, F, G, K and M-types) are shown above, and key events in the life of a high-mass star (O and B-types) are shown below. | ||
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| After a while, the planetary nebula will disperse into space, go away and only the tiny core will remain. When the envelope was expanding into a nebula, the core was contracting. As it contracts, it heats up even more and becomes white-hot. At that point it is called a **white dwarf**. This is the final fate of a poor star like our sun. | After a while, the planetary nebula will disperse into space, go away and only the tiny core will remain. When the envelope was expanding into a nebula, the core was contracting. As it contracts, it heats up even more and becomes white-hot. At that point it is called a **white dwarf**. This is the final fate of a poor star like our sun. | ||
| - | ==== - High-mass | + | ==== - Heavyweight |
| But if a star is more massive, the fate will be different as you see in the lower panels of the diagram above. | But if a star is more massive, the fate will be different as you see in the lower panels of the diagram above. | ||
courses/phy100/7.1700978874.txt.gz · Last modified: 2023/11/25 23:07 by asad