Most high mass X-ray binaries contain neutron stars as companions to an OB star, while high mass black hole binaries are very rare. We use rapid binary population synthesis to predict the number and properties of OB stars with compact companions, while varying uncertain physics assumptions. We find that synthetic populations which agree with the

Bars are prominent features observed in most disc galaxies, having a crucial role in the secular evolution of their hosts. Indeed, they redistribute material within the galaxies, while rotating around the centre at a given angular frequency, the bar pattern speed. When formed in an isolated galaxy, a bar is expected to be born as fast rotating with

La creación y uso de modelos es una parte fundamental de la ingeniería. En esta charla se presentará una visión descriptiva de alto nivel sobre los modelos creados para el diseño preliminar del telescopio solar europeo (EST). "Desfilarán" modelos de EST creados con herramientas como Simulink, ANSYS, DASP, Zemax etc. Sin entrar en detalles de