European Space Agency (ESA) is planning to launch the Gaia mission by the end of 2013. That mission will study the ultra-cool dwarfs, which are the group of stars in the Milky Way, with a temperature below 2500K. They are among the most ancient celestial objects in our Galaxy and can help in the study of the most primitive chemical composition.
Actually the objectives of this astronomical study are “to create the largest and most precise three dimensional chart of our Galaxy by providing unprecedented positional and radial velocity measurements for about one billion stars in our Galaxy and throughout the Local Group.”
In a research paper, published in the journal Astronomy & Astrophysics, researchers have designed a method allowing Gaia to detect tens of ultra-cool dwarfs in the Milky Way. They have also developed the method to detect the physical parameters such as the temperature and gravity with little errors. These accurate descriptions will also increase the number of detected ultra-cool dwarfs.
Gaia will provide about one petabyte of information that will be processed and analyzed to get the results. About 400 scientists will collaborate in the project.