16 citations · 61 across the 7 of their papers we have counts for
5 papers · 1 filter
Line formation regions of the UV spectrum of CI Cygni
J. Mikolajewska, M. Friedjung, C. Quiroga
We have examined radial velocities and fluxes of ultraviolet emission lines at different epochs, deduced from archival IUE and GRHS/HST spectra. The line fluxes give electron densi…
The effect of dust obscuration in RR Tel on optical and IR long-term photometry and Fe II emission lines
D. Kotnik-Karuza, M. Friedjung, P. A. Whitelock +4
Infrared and optical photometric and spectroscopic observations of the symbiotic nova RR Tel are used to study the effects and properties of dust in symbiotic binaries containing a…
Analysis of the circumstellar environment of the B[e] star HD 45677 (FS CMa)
Gérard Muratorio, Corinne Rossi, Michael Friedjung
We studied the circumstellar environment of the B[e] star HD 45677 through the analysis of the emission lines from ionized metals. We used the statistical approach of the self abso…
The possible orbital period of the nova V1493 Aquilae
Andrej Dobrotka, Michael Friedjung, Alon Retter +2
Period analysis of CCD photometry of V1493 Aql (Nova Aql 1999 no. 1) performed during 12 nights through I and R filters a few weeks after maximum is presented. The PDM method for p…
The Active Quiescence of HR Del (Nova Del 1967)
Pierluigi Selvelli, Michael Friedjung
This new UV study of the ex-nova HR Del is based on all of the data obtained with the IUE satellite, and includes the important series of spectra taken in 1988 and 1992 that have n…