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| Paper: |
The distribution of comets around stars |
| Volume: |
36, Planets Around Pulsars |
| Page: |
335 |
| Authors: |
Tremaine, Scott |
| Abstract: |
The distribution of comets around stars surrounded by planetary systems that formed from disks is analyzed. Results reveal that stars similar to the sun can only generate an Oort-type cloud efficiently if they contain planets at semimajor axis greater than approximately 3 AU. The typical semimajor axis in an Oort-type cloud around a solar-type star will be 10 exp 4 AU. Halo stars are found to require planets that are smaller by about a factor of 3 at a given semimajor axis, and produce larger cloud, with a semimajor axis of about 2 x 10 exp 4 AU. |
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