We present an integral field spectroscopic study of the central 2 × 2 kpc2 of the blue compact dwarf galaxy Mrk 409, observed with the Potsdam MultiAperture Spectrophotometer (PMAS). This study focuses on the morphology, two-dimensional chemical abundance pattern, excitation properties, and kinematics of the ionized interstellar medium in the

The preliminary results of STEPHI 2006 campaign are reported.

The proto-planetary nebula Hen 3-1475 (IRAS 17423--1755) shows a remarkable highly--collimated optical jet with a spectacular S-shaped string of shock-excited knots (Bobrowsky et al. 1995, Riera et al. 1995, Borkowski et al. 1997). Moreover, extremely high velocities have been observed in the innermost regions of its optical jet, which decreases

We present new tools for improving our abilities for disentangling relevant stellar population parameters in early-type galaxies. To develop these tools we use stellar population synthesis models predicting spectra for old and intermediate-aged stellar populations at moderately high resolution. We propose new indices to lift the age/metallicity

We present 45 photoelectric minima observations of 20 eclipsing binaries.

We summarise the current status of our project to identify and study z ˜ 6-10 galaxies thanks to strong gravitational lensing. Building on the detailed work from tet{sch:richard06}, we present results from new follow-up observations (imaging) undertaken with ACS/HST and the Spitzer Space Telescope and compare our results with findings from the