Timeline for Can protoplanetary disks form main-sequence stars?
Current License: CC BY-SA 3.0
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| Nov 27, 2013 at 13:40 | comment | added | called2voyage♦ | @AlexeyBobrick Possibly, but there are already catalogued binary star systems where one companion is a smaller star with different composition. For example, Gilese 777 has two (possibly three) stars of varying sizes and compositions. I would actually consider it a fairly good candidate for a system where the companions of the largest star formed from the circumstellar disk, not from traditional gravitational collapse. | |
| Nov 27, 2013 at 13:26 | comment | added | Alexey Bobrick | Thanks a lot! One point to add here is that the stars, formed in PPDs are most likely less massive and possibly a bit different in composition from the normal binary companions formed through gravitational collapse. | |
| Nov 27, 2013 at 13:11 | comment | added | called2voyage♦ | @AlexeyBobrick I don't really feel qualified to speculate in my answer based on the data I have, but I would guess that such a system would not be entirely different from a binary system which formed the conventional way. | |
| Nov 26, 2013 at 23:44 | comment | added | Alexey Bobrick | Thank you very much for your answer and the reference! Can you speculate on whether a planet turning into a MS star could affect the dynamics of the whole planetary system? (perhaps, in a less violent case than that of WR stars) And also, I presume, there are no existing estimates on the occurence rate of such events in general? | |
| Nov 26, 2013 at 17:50 | history | answered | called2voyage♦ | CC BY-SA 3.0 |