A OSIRIS/GTC emission-line survey of the rich cluster Cl0024+2654 at z = 0.4
In the framework of the GLACE project, we present the preliminary results of a mapping of emission lines (Hα+[NII], Hβ and [OIII]) in the rich cluster Cl0024...
A Parametric Model of the Solar Full-Disk Seismological Signal
Solar eigenmodes frequencies are most often determined using some kind of modelisation of the Fourier spectrum of the data in one or two dimensions. Many...
A Period Distribution for M31 X-ray Transients from Chandra and HST
All Galactic black hole binaries with low mass donor stars are transient X-ray sources; we expect most of the X-ray transients observed in external galaxies to...
We present two selected photoionization models of the extragalactic H ii region NGC 2363, and compare them with three sets of observational data. We discuss the...
A Photometric and Magnetic Analysis of the Wilson Effect
For two sunspot groups observed in June 1992 we analyze the center-to-limb variation and height dependence of various geometrical parameters describing the...
A photometric and spectroscopic study of the multi-tailed asteroid (6478) Gault
In this presentation, we describe several months of monitoring of Gault since January 2019 using various telescopes and instrumentation. The goal is to...
A photometric method to determine supermassive black hole masses
We report the discovery of a strong correlation between the shape of a bulge's light-profile and the mass of its central supermassive black hole (Mbh). We find...