When binaries keep track of recent nucleosynthesis
We determine Zr and Nb elemental abundances in barium stars to probe the operation temperature of the s-process that occurred in the companion asymptotic giant...
When disks collide: major and minor mergers in disk galaxies
We present the surface brightness profile fitting of a sample of double nucleus disk galaxies, minor merger candidates. We have decomposed these systems into...
When stars speak too fast: probing the first dredge up beyond the Nyquist frequency
Using asteroseismology, we analyse late subgiants and early red giants with long cadence data from Kepler. These two phases are key for studying the first...
Several recent studies indicate that bulges are more complex than merely structureless relaxed stellar systems. We study the HST images of a sample of 130...
We address the problem that dynamical masses of high-redshift massive galaxies, derived using virial scaling, often come out lower than stellar masses inferred...
White dwarf post common envelope binaries from the SDSS
Post common envelope binaries (PCEBs) consisting of a white dwarf and a main sequence star are ideal systems to calibrate current theories of angular momentum...