From the analysis of radial velocity measurements of the Sun, obtained at Izaña from 1976 to 1985, stable periods longer than 1 day, have been found in the...
The 17 August 2010 stellar occultation by the dwarf-planet 1 Ceres.
We will present preliminary results of the occultation of Tycho star 6833-00163-1 by the dwarf-planet 1 Ceres. The 11.8 visual magnitude star was occulted in...
The 1989 and 2015 outbursts of V404 Cygni: a global study of optical features
The black hole transient V404 Cygni exhibited a bright outburst in June 2015 that was intensively followed over a wide range of wavelengths. Our team obtained...
The 2011 Giacobinid Outburst: Meteoroid Flux Determination and Orbital Data by Using Video Imagery from the Spanish Fireball Network
The results for the 2011 Draconid outburst are presented. The peak flux of this meteor shower was recorded in solar longitude 195.03 (Oct. 8, 2011, at 20h00m UT...
The 2019 October 22nd multi-chord stellar occultation by (84922) 2003 VS2
IntroductionIn the last ten years, stellar occultations by Trans-Neptunian Objects (TNOs) have become one of the best techniques to gather information about the...
The 3-D topology of magnetic fields in and around sunspots
The most prominent features on the surface of the solar disc are the sunspots, which have been studied since their detection in the 17th century. Despite this...