Spectra in the wavelength range 4230-9150 Å and the first light curves of Z Vul in the infrared J, H and K bands are presented. Our infrared JHK light curves...
Absolute parameters of the short-period binary HY Virginis from JHK light curves and spectroscopy
We present the first light curves in the infrared J, H and K filters of HY Vir. Based on HY Vir and template stars spectra in the region 8440 8870 Å, we...
Absorption and emission coefficients of non-equilibrium plasmas
In non-equilibrium plasma spectroscopy it may happen to have to deal with ensembles of particles, whose velocity distribution is not the equilibrium (i.e...
Absorption at the dust sublimation radius and the dichotomy between X-ray and optical classification in the Seyfert galaxy H0557-385
In this work, the analysis of multi-epoch (1995-2010) X-ray observations of the Seyfert 1 galaxy H0557-385 is presented. The wealth of data presented in this...
Absorption signatures of warm-hot gas at low redshift: O VI
We investigate the origin and physical properties of O VI absorbers at low redshift (z= 0.25) using a subset of cosmological, hydrodynamical simulations from...
Absorption-line strengths of 18 late-type spiral galaxies observed with SAURON
We present absorption line strength maps for a sample of 18 Sb-Sd galaxies observed using the integral-field spectrograph SAURON operating at the William...
Abundance analysis of a sample of evolved stars in the outskirts of ω Centauri
The globular cluster ω Centauri (NGC 5139) is a puzzling stellar system harboring several distinct stellar populations whose origin still represents a unique...
Spectrophotometric observations in the optical and near-infrared of six giant H II regions in the high metallicity spiral galaxy M51 are presented. Five of the...