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EP: Extraterrestrische Physik

EP 15: Extrasolare Planeten

EP 15.4: Vortrag

Mittwoch, 9. März 2005, 09:30–09:45, TU BH349

Towards diect detection of young exo-planets — •Ralph Neuhaeuser¹, Eike Guenther², Guenther Wuchterl¹ und Markus Mugrauer¹ — ¹AIU Jena — ²TLS Tautenburg

Since several years, we obtain deep, high-resolution imaging observations of the surroundings of young (up to 100 Myrs) nearby (up to 150 pc) stars in order to detect sub-stellar companions directly, both brown dwarfs and massive planets. Young stars are good targets, because their companions are also young and, hence, self-luminous due to ongoing contraction. For the observations, we used the speckle camera Sharp at the ESO 3.5m NTT and more recently the AO camera NaCo at the ESO 8.2m VLT. So far, several brown dwarfs were found and confirmed by astrometry, photometry, and spectroscopy. We will now also present the first two candidates for planets detected diretly, one in the TW Hya association, and one in the Lupus star forming region.