Hot Subdwarfs: Magnetic, Oscillatory and Other Physical Properties
Hot subdwarf stars (hot sds) are blue subluminous objects. Only a few determinations are available to date regarding the study of such aspects as rotation...
H_α luminosities of a sample of galaxies in nearby compact groups are presented. Our purpose is to study the influence of the group environment on the star...
We carried out optical and Hα photometry of two contact binaries (V861 Herculis, EQ Tauri). The light curve modeling revealed stellar spots in both contact...
IMF and Velocity-Dispersion Effects on Optical Spectroscopic Absorption Features
We explore the behaviour of the most popular spectroscopic absorption features in the optical region as a function of the initial mass function (IMF), while...
Infrared Imaging of Perpendicular Nested Bars in Spiral Galaxies with the Infrared Camera at the Carlos Sánchez Telescope
Images are presented of some of the galaxies in the sample of the BARS `International Time Project' in the near-infrared JHK_s bands, obtained with the Infra...
Complete infraredJ andK light curves of the RS CVn system XY UMa have been obtained at the beginning of 1989. We point out some interesting morphological...
Integral Field Spectroscopy of Six Seyfert Galaxies
We summarize the main conclusions derived from integral field spectroscopy, with optical fibres, of six Seyfert galaxies. More than 95 spectra around the active...