First results of an Hα based search of classical Be stars in the Perseus Arm and beyond
We investigate a region of the Galactic plane, between 120° ≤ ℓ ≤ 140° and -1° ≤ b ≤ +4°, and uncover a population of moderately reddened (E(B - V) ˜ 1)...
The GOLF experiment on the SOHO mission aims to study the internal structure of the Sun by measuring the spectrum of global oscillations in the frequency range...
First simultaneous UBVRI photopolarimetric observations of a sample of normal quasars
We present what we believe to be the first truly simultaneous UBVRI photopolarimetric results for a sample of eight 'normal' quasars. In five of these quasars...
First spectroscopic investigation of anomalous Cepheid variables
Context. Anomalous Cepheids (ACEPs) are intermediate-mass metal-poor pulsators that are mostly discovered in dwarf galaxies of the Local Group. However, recent...
First stars XI. Chemical composition of the extremely metal-poor dwarfs in the binary CS 22876-032
Context: Unevolved metal-poor stars constitute a fossil record of the early Galaxy, and can provide invaluable information on the properties of the first...
We present the first stellar spectroscopy in the low-luminosity (MV ˜ -9.3 mag), dwarf galaxy Leo P. Its significantly low oxygen abundance (3% solar) and...
The V-type asteroids are of major scientific interest as they may sample multiple differentiated planetesimals. Determination of their physical properties is...
First survey of Wolf-Rayet star populations over the full extension of nearby galaxies observed with CALIFA
The search of extragalactic regions with conspicuous presence of Wolf-Rayet (WR) stars outside the Local Group is challenging task owing to the difficulty in...