Observing binaries with GAIA: large gains after much effort. Staffan Söderhjelm Lund Observatory. Millions of binaries of all kinds Complete statistics near sun Partial statistics over large parts of the Galaxy Orbits and masses. Increased size of sampling windows
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
Complete statistics near sun
Partial statistics over large parts of the Galaxy
Orbits and masses
Increased size of sampling windows
Greatly complicated reductions
Orbital p.m. bias in the galactic dynamics
Photometric bias from unresolved binariesPros and cons...
Observationally, a ‘typical’ star has a companion, but with dm > 5-10.
It will be easily discovered by GAIA if the period is less than 30 years, but not if it is above 100 years.