The observations were obtained with the automated 60cm telescope of Konkoly Observatory, Svabhegy, Budapest equiped with a Wright 750x1100 CCD using BV(RI)c filters, between 25 September and 14 December in 2003. (5 data files).

Context. The detection of pulsational frequencies in stellar photometry is required as input for asteroseismological modelling. The second short run (SRa02) of the CoRoT mission has provided photometric data of unprecedented quality and time-coverage for a number of O-type stars. Aims: We analyse the CoRoT data corresponding to three hot O-type

Context. After years of modest optical activity, the quasar-type blazar 4C 38.41 (B3 1633+382) experienced a large outburst in 2011, which was detected throughout the entire electromagnetic spectrum, renewing interest in this source. Aims: We present the results of low-energy multifrequency monitoring by the GLAST-AGILE Support Program (GASP) of

This table presents optical UBVRI broadband photo-polarimetry of the EXPORT sample obtained at the 2.5m Nordic Optical Telescope. The database consists of multi-epoch photo-polarimetry of 68 pre-main-sequence and main-sequence stars. (2 data files).

We carried out multi-object spectroscopic observations of A610, A725, and A796 in November 2004 and January 2005. We used AF2/WYFFOS, the multi-object, wide-field, fiber spectrograph working at the prime focus of the 4.2m William Herschel Telescope (WHT, Island of La Palma, Spain). (3 data files).

The stratification with geometrical height of the velocity and temperature 5 minute oscillation through the solar photosphere is obtained after the inversion of a time series of KI 7699 Å line spectra taken at disk center.