TNOs: could some have formed elsewhere? |
TNOs: could some have formed elsewhere? |
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#1
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![]() Administrator ![]() ![]() ![]() ![]() Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 ![]() |
I got a question today for Planetary Radio Q&A that I couldn't answer, being pretty ignorant about solar system formation research. Can anybody help?
QUOTE We know from the metal composition of our solar system that the Sun is at least a second or third generation star. It made me wonder if it was possible that some of the comets or other KBOs that we witness might be from the Sun's predecessor star or stars. If not, could such bodies exist a bit further out? I should think it would be fantastic to be able to investigate such objects. --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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#2
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 3516 Joined: 4-November 05 From: North Wales Member No.: 542 ![]() |
Another angle on Emily's query. The recent paper on the capture of Triton begs the question: could the sun have captured objects in a similar way? If there is an interstellar population of planetary sized bodies then perhaps some of them are double or multiple systems. This would greatly enhance the probability of solar capture. The orbits of any such captured objects would presumably be arbitrarily distributed in size, inclination and eccentricity - in fact rather Sedna-like.
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#3
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![]() Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 ![]() |
The recent paper on the capture of Triton begs the question: could the sun have captured objects in a similar way? Alan already dismissed this as highly improbable, see previous posts: QUOTE As to larger (KBO-sized) bodies-- forget it, the odds ar there isn't even one object that is from a passing star UNLESS the Sun was born as a double or in a cluster-- which is possible but controversial.
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