ar X iv : a st ro - p h / 05 09 20 8 v 1 8 S ep 2 00 5 First AMBER / VLTI observations of hot massive stars

ar X iv : a st ro - p h / 04 09 20 3 v 1 8 S ep 2 00 4 Dynamic Tides and the Evolution of Stars in Close Binaries

In this talk, we review some recent advances in the theory of dynamic tides in close binaries. We particularly focus on the effects of resonances of dynamic tides with free oscillation modes and on the role of dynamic tides in the comparison of theoretically predicted and observationally inferred apsidalmotion rates.

ar X iv : a st ro - p h / 05 09 05 1 v 1 2 S ep 2 00 5 Why are massive O - rich AGB stars in our Galaxy not S - stars ?

We present the main results derived from a chemical analysis carried out on a large sample of galactic O-rich AGB stars using high resolution optical spectroscopy (R∼40,000–50,000) with the intention of studying their lithium abundances and/or possible s-process element enrichment. Our chemical analysis shows that some stars are lithium overabundant while others are not. The observed lithium ov...

ar X iv : a st ro - p h / 05 08 05 2 v 1 1 A ug 2 00 5 Observations of 51 Ophiuchi with MIDI at the VLTI

We present interferometric observations of the Be star 51 Ophiuchi. These observations were obtained during the science demonstration phase of the MIDI instrument at the Very Large Telescope Interferometer (VLTI). Using MIDI, a Michelson 2 beam combiner that operates at the N band (8 to 13 µm), we obtained for the first time observations of 51 Oph in the mid-infrared at high-angular resolution....

ar X iv : a st ro - p h / 00 09 34 8 v 1 2 1 Se p 20 00 EVN Observations of GRS 1915 +

ar X iv : a st ro - p h / 98 04 15 2 v 1 1 6 A pr 1 99 8 New aspects in the theory of magnetic winds from massive hot stars