Aims: Previous studies have indicated that faint and bright early-type galaxies (ETGs) present different coefficients and dispersions for their Kormendy relation (KR). A recently published paper states that the intrinsic dispersion of the KR depends on the magnitude range within which the galaxies are contained, therefore we investigate here

The study of BL Lac environments is hindered by the lack of knowledge regarding the environments of their putative parents, the FRI/II radio galaxies. To rectify this we have assembled a complete sample of FRI/II radio galaxies with z

We lack a reliable scenario for the formation and evolution of stars and their planetary systems, involving key factors such as magnetic fields and turbulence. We present the case for a mission concept that will clarify these problems and give us a global view of the evolution of combined star and planetary systems. This will be achieved by

During the international OJ-94 campaign we have also monitored blazar 3C 66A. Since fall 1993 we have collected over 500 V-band observations. This constitutes more data than all the previous observations put together. During this monitoring the blazar was in outburst reaching V-magnitude 13.7 (JD 9414). This is the brightest it has ever been

We have studied the Lyα, Hβ, Hα, and Mg II λ2798 line profiles of the Seyfert 1 galaxy III Zw 2. The shapes of these broad emission lines show evidence of a multicomponent origin and also features that may be identified as the peaks due to a rotating disk. We have proposed a two-component broad-line region (BLR) model consisting of an inner

High-resolution spectra provide evidence of the Li-I 6707 line in 28 of the stars, and the significance of the results is discussed. The Li-I equivalent widths are presented after correcting for continuum veiling with actual measurements of the veiling itself. Surface spots are found to have a complex effect on the width of the photospheric lines