114 citations · 238 across the 14 of their papers we have counts for
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The 2006 hot phase of Romano's star (GR 290) in M33
R. F. Viotti, S. Galleti, R. Gualandi +4
Understanding the nature of the instabilities of LBVs is important to understand the late evolutionary stages of very massive stars. We investigate the long term, S Dor-type variab…
The high energy X-ray tail of Eta Car revealed by BeppoSAX
R. F. Viotti, L. A. Antonelli, C. Rossi +1
We report on the June 2000 long (100 ks) BeppoSAX exposure that has unveiled above 10 keV a new very high energy component of the X-ray spectrum of Eta Car extending to at least 50…
Digitatio and Scientific Exploitation of the Italian and Vatican Astronomical Plate Archives
C. Barbieri
There is a widespread interest to digitize the precious information contained in the astronomical plate archives, both for the preservation of their content and for its fast distri…
UV and X-Ray Monitoring of AG Draconis During the 1994/1995 Outbursts
J. Greiner, K. Bickert, R. Luthardt +3
The recent 1994-1995 active phase of AG Draconis has given us for the first time the opportunity to follow the full X-ray behaviour of a symbiotic star during two successive outbur…
A forgotten episode of the light curve in 1860-1865
V. F. Polcaro, R. Viotti
We have found previously unreported observations of the galactic Luminous Blue Variable covering the period 1860-1865. Contrary to the current belief, these data suggest th…
AG Carinae III. The 1990 hot phase of the star and the physical structure of the circumstellar environment
R. Viotti, V. F. Polcaro, C. Rossi
Long slit spectra of the region around the Luminous Blue Variable AG Car obtained in June 1990, just before the onset of its new brightening phase, indicate that AG Car was in the…