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A Needs Analysis Study of Amateur Astronomers For the National Virtual Observatory
A. Price, L. Cohen, J. Mattei +1
Through a combination of qualitative and quantitative processes, a survey was conducted of the amateur astronomy community to identify outstanding needs which the National Virtual…
The Variability of R,N,C Stars from HIPPARCOS and AAVSO Data
M. Grenon, J. A. Mattei, L. Eyer +1
Accurate photometry was obtained for all programme stars during the 3.3-year HIPPARCOS mission. The final observing programme included several hundred Mirae (M), semiregular (SR) l…
Optical and EUV Light Curves of Dwarf Nova Outbursts
Christopher W. Mauche, Janet A. Mattei, Frank M. Bateson
We combine AAVSO and VSS/RASNZ optical and Extreme Ultraviolet Explorer EUV light curves of dwarf novae in outburst to place constraints on the nature of dwarf nova outbursts. From…
The X-ray spectra of VW Hydri during the outburst cycle
H. W. Hartmann, P. J. Wheatley, J. Heise +2
We report six BeppoSAX X-ray observations of VW Hydri during and after the outburst of Sep 23 1998. The outburst flux is lower than the quiescent flux in the entire observed energy…