04/11/2004 – Auditório 2 – IAG/USP
Dr. Andreas Quirrenbach
Observatório de Leiden/Países Baixos
Título/Title: Stellar interferometry: A look at the milliarcsec Universe
Resumo/Abstract:
| Stellar interferometry at visible and infrared wavelengths gives direct access to astrophysical phenomena on angular scales as small as a few milliarcseconds, and enables measurements of stellar positions and motions with microarcsecond precision. The current large ground-based interferometers have made first spectacular observations of stars, circumstellar material, and galactic nuclei. Astrometric interferometers on the ground and in space will soon perform detailed studies of the dynamics of planetary systems, and make a wealth of fundamental measurements in the local universe. The development of nulling interferometry will lead to the discovery of Earth-like planets around nearby stars, and tell us whether they may be capable of supporting life. |
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