A “transit” occurs when we observe a planet moving across the disc of its star. Thus, during the transit the planet obscures a small portion of its star, slightly reducing its luminosity. While in the Solar System the only planets we can observe transiting in front of the Sun are Mercury and Venus, transits is still the most efficient method» Read more
Palermo Astronomical Observatory “Giuseppe S. Vaiana” is one of the research centres of the National Institute for Astrophysics (INAF). It works together with Palermo University through the Department of Physics and Chemistry.
OAPa’s main characteristic is its specific vocation in the field of space astrophysics. The network of activities also involves several frontier research fields both at the national and international level.
Chemical composition and elevation of the atmosphere of WASP-121b. The study: “Atmospheric Rossiter-McLaughlin effect and transmission spectroscopy of WASP-121b with ESPRESSO” of F. Borsa (INAF-OA Brera) recently appeared on A&A)
Ultra-hot Jupiters are gaseous planets orbiting at close distances from their central stars, with rotation periods shorter than 3 days. Their atmospheres are thus heated, more than 2000 degrees, by the incident radiation emitted by the central star. For this reason, the atmospheres of ultra-hot Jupiters shows peculiar properties compared with planets of other types. For instance, they are affected» Read more
Winds and jets from protoplanetary disks. The study: “The Evolution of Disk Winds from a Combined Study of Optical and Infrared Forbidden Lines” of I. Pascucci (The University of Arizona) recently appeared on A&A
The study of protoplanetary disks (which are disks orbiting around young pre-main sequence stars) is of great interest since planets formation occurs in these structures. Disks are dispersed in a few million years (typically less than 10 Myrs) by the planets formation itself, the accretion of material onto the central star, and the loss of material launched in a highly» Read more
(Italiano) Un nuovo strumento di fruizione dei beni culturali dell’INAF-Osservatorio Astronomico di Palermo
Sorry, this entry is only available in Italian.