89 citations · 497 across the 24 of their papers we have counts for
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Detection of the white dwarf and the secondary star in the new SU UMa dwarf nova HS 2219+1824
P. Rodriguez-Gil, B. T. Gaensicke, H. -J. Hagen +4
We report the discovery of a new, non-eclipsing SU UMa-type dwarf nova, HS 2219+1824. Photometry obtained in quiescence (V ~ 17.5) reveals a double-humped light curve from which we…
Sc substitution for Mg in MgB2: effects on Tc and Kohn anomaly
S. Agrestini, C. Metallo, M. Filippi +9
Here we report synthesis and characterization of Mg_{1-x}Sc_{x}B_{2} (0.12<x<0.27) system, with critical temperature in the range of 30>T_{c}>6 K. We find that the Sc doping moves…
Multi-band optical micro-variability observations of the BL Lac object S4 0954+658
I. E. Papadakis, V. Samaritakis, P. Boumis +1
We have observed S4 0954+658 in the BVRI bands in 2001, and in the BI bands in 2002. The observations resulted in almost evenly sampled light curves, 3-8 hours long, with an averag…
On the use of photometric redshifts for X-ray selected AGNs
S. Kitsionas, E. Hatziminaoglou, A. Georgakakis +1
(Abridged) In this paper we present photometric redshift estimates for a sample of X-ray selected sources detected in the wide field (~2 deg^2), bright [f_{X} (0.5-8 keV)~10^{-14}…
The kinematics of the bi-lobal supernova remnant G 65.3+5.7 - Paper II
P. Boumis, J. Meaburn, J. A. Lopez +4
Further deep, narrow-band images in the light of [O III] 5007 A have been added to the previous mosaic of the faint galactic supernova remnant G 65.3+5.7. Additionally longslit spa…
Candidates for giant lobes projecting from the LBV stars P Cygni and R 143
J. Meaburn, P. Boumis, M. P. Redman +2
Deep, wide-field, continuum-subtracted, images in the light of the Halpha+[NII] 6548 & 6584 A and [O III] 5007 A nebular emission lines have been obtained of the environment of the…