background and objectives: oleaceae family contains approximately 20 species of small trees and ancient world of the mediterranean, north africa, southeast asia, north to southern china, scotland and east australia have a wide dispersion. they are evergreen and have small leaves that are integrated have been met and the fruit is drup. olive trees resistant to drought and adapt to poor soils and...

We analyze the dynamical properties of ?1500 very metal-poor (VMP; [Fe/H] ? ?2.0) halo stars, based primarily on medium-resolution spectroscopic data from HK and Hamburg/ESO surveys. These data, collected over past 30 yr, are supplemented by a number calibration stars other small samples, along with astrometric information Gaia DR2. apply clustering algorithm to 4D energy-action space sample, i...