The Hollywood Strategy for Microlensing Detection of Planets
| dc.creator | Gould, Andrew | |
| dc.date | 1996-08-09 | |
| dc.date.accessioned | 2026-07-07T02:21:43Z | |
| dc.date.available | 2026-07-07T02:21:43Z | |
| dc.description | Follow the big stars! I review the theory of detection and parameter measurement of planetary systems by follow-up observations of ongoing microlensing events. Two parameters can generically be measured from the event itself: the planet/star mass ratio, $q$, and the planet/star separation in units of the Einstein ring. I emphasize the advantages of monitoring events with giant-star sources which are brighter (thus easier to monitor) and bigger (thus offering the prospect of measuring an additional parameter from finite-source effects: the proper motion $μ$). There is potentially a strong degeneracy between $q$ and $μ$. I present a simple analytic representation of this degeneracy. I then describe how it can be broken using accurate single-band photometry from observatories around the world, or optical/infrared photometry from a single site, or preferably both. Both types of observations are underway or will be soon. Monitoring of giant-star events seen toward the bulge is also the best way to determine the content and structure of the inner Galaxy. | |
| dc.description | 6 pages, no figures, Talk given at the 12th IAP Colloquium: Variable Stars and the Astrophysical Returns of Microlensing Surveys | |
| dc.identifier | https://arxiv.org/abs/astro-ph/9608045 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/9608045 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/10610 | |
| dc.subject | Astrophysics | |
| dc.title | The Hollywood Strategy for Microlensing Detection of Planets | |
| dc.type | text |