Timeline for What would happen with a supermassive planet?
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
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| S Jul 22, 2015 at 14:31 | history | suggested | BartekChom | CC BY-SA 3.0 |
the author suggested me to edit
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| Jul 22, 2015 at 14:23 | review | Suggested edits | |||
| S Jul 22, 2015 at 14:31 | |||||
| Jul 22, 2015 at 13:22 | comment | added | Resonating | White dwarves are post-star things, but given their composition (carbon-oxygen) we should look to them and perhaps to how they explode for hints on this. @BartekChom I encourage you to edit in all those details to the answer. | |
| Jul 22, 2015 at 10:43 | comment | added | BartekChom | 3) According to Wikipedia, fusion of carbon, oxygen, neon and silicon happens only in very heavy stars, and this also suggests that mega-planets made of them should be white dwarfs. Iron is most stable and heavier elements could undergo some nuclear reactions. Uranium undergoes nuclear fission and it could explode or shine similarly to typical fusing star. | |
| Jul 22, 2015 at 10:43 | comment | added | BartekChom | Generally I agree, but I would like to add three details (numbers from Wikipedia): 1) White dwarfs are also possible and probable at 1 sun mas. Chandrasekhar limit for white dwarf mass is $1.39 M_\odot$ and Tolman–Oppenheimer–Volkoff limit for neutron star mass is $1.5-3.0 M_\odot$. Heavier bodies without fusion become black holes (unless some exotic stars can exist). 2) Limit for brown dwarfs: Hydrogen fusion begins at $75-80 M_J$ and I have heard that with bigger amount of elements heavier than helium even lighter stars could ignite. | |
| Jul 22, 2015 at 6:20 | history | answered | Resonating | CC BY-SA 3.0 |