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PLATO as it is : A legacy mission for Galactic archaeology

Strassmeier, K. G.; Rauer, H.; Gilmore, G. +102 more

Deciphering the assembly history of the Milky Way is a formidable task, which becomes possible only if one can produce high-resolution chrono-chemo-kinematical maps of the Galaxy. Data from large-scale astrometric and spectroscopic surveys will soon provide us with a well-defined view of the current chemo-kinematical structure of the Milky Way, bu…

A TGAS/Gaia DR1 parallactic distance to the σ Orionis cluster

Caballero, José A.

With the new Tycho-Gaia Astrometric Solution (TGAS), I derive a new parallactic distance to the young σ Orionis open cluster, which is a cornerstone region for studying the formation and evolution of stars and substellar objects from tens of solar masses to a few Jupiter masses. I started with the list of the 46 brightest cluster stars of Caballer…