The QUIJOTE (Q-U-I JOint Tenerife) CMB Experiment is operating at the Teide Observatory with the aim of characterizing the polarization of the CMB and other...
The QUIJOTE-CMB experiment: studying the polarisation of the galactic and cosmological microwave emissions
The QUIJOTE (Q-U-I JOint Tenerife) CMB Experiment will operate at the Teide Observatory with the aim of characterizing the polarisation of the CMB and other...
The Radial Velocity Projection Factor in the Pulsating Helium Star V652 Her
The behavior of the velocity projection factor was studied for three individual Lines, He I 4438 Å, Si III 4553 Å, and N II 4442 Å, and for the complete...
We report on a rapid fading of GX 339-4 to its lowest ever observed X-ray flux level. In response to the recent report of the start of an outburst of GX 339-4...
The rapid fading of V1647 Orionis: the sudden end of a FUor-type eruption?
The young eruptive star V1647 Ori started a rapid fading in October 2005 and now is only 1 mag above the pre-outburst level. Colour changes indicate that the...
The Rapid Growth of the Fingertips of Preplanetary Nebula CRL618
HST images taken over a time span of 11 years show that the tips of its bright optical fingers have proper motions exceeding 1". At the presumed distance of 0.9...