Eclipsing binary (EB) systems showing double lines in their spectra are excellent sources of knowledge about structure and evolution of stars. The analysis of...
Swift X-ray Telescope (XRT) monitoring observations of V458 Vul (Nova Vul 2007, S. Nakano, IAUC 8861) have found it to be entering a new phase characterised by...
V471 Tau: mapping magnetic activity in a pre-CV binary system.
The technique of Doppler imaging enables us to map starspots at the surfaces of rapidly rotating cool stars. Starspots are probes of magnetic activity, thus the...
V823 Cas BV(RI)c differential photometry (Jurcsik+, 2006)
The observations were obtained with the automated 60cm telescope of Konkoly Observatory, Svabhegy, Budapest equiped with a Wright 750x1100 CCD using BV(RI)c...
V838 Mon and the new class of stars erupting into cool supergiants (SECS)
V838 Mon has undergone one of the most mysterious stellar outbursts on record. The spectrum at maximum closely resembled a cool AGB star, evolving toward cooler...