Flare activity on UV Ceti : visible and IUE observations.
Bromage, G. E.; Dufton, P. L.; Keenan, F. P.; Phillips, K. J. H.; Kingston, A. E.
United Kingdom
Abstract
Simultaneous far-ultraviolet (IUE) spectroscopy and optical photometry and spectrophotometry of a flare on UV Ceti are reported. The flare reached ΔU = 2 mag but showed only modest enhancements in the IUE spectra. The optical spectrophotometry indicated broadened Balmer line profiles during the flare, with Hβ and Hγ clearly showing red wings (≡100 km s-1). The results are compared with other IUE and optical observations of UV Ceti, and their solar analogues.