Origin of the Break and Mass-Dependence in the Wide-Binary Projected-Separation Distribution
| dc.creator | Gould, Andrew | |
| dc.creator | Eastman, Jason | |
| dc.date | 2006-10-26 | |
| dc.date | 2006-10-27 | |
| dc.date.accessioned | 2026-07-07T07:27:10Z | |
| dc.date.available | 2026-07-07T07:27:10Z | |
| dc.description | The distribution of Galactic-disk wide binaries shows a clear break in slope at projected separations of about r_\perp ~ 2500 AU in two basically independent surveys by Chaname & Gould and Lepine & Bongiorno. The latter also showed that the frequency of wide-binary companions to G-star primaries declines monotonically as a function of companion mass. We show that both effects can be explained by the operation of Heggie's law in the typical open-cluster environments where binaries form. One immediate conclusion is that most Galactic-disk stars formed in open clusters with internal dispersions of a few hundred meters per second and disruption times of a few hundred million years. | |
| dc.description | submitted to ApJ Letters, 4 pages + 1 figure | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0610799 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0610799 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/117282 | |
| dc.subject | Astrophysics | |
| dc.title | Origin of the Break and Mass-Dependence in the Wide-Binary Projected-Separation Distribution | |
| dc.type | text |