... Ultraviolet spectra of BP Tau observed with HST/GHRS and IUE satellites were analysed. ... Key words. stars: pre-main sequence stars: individual: BP Tau ultraviolet: stars X-rays: stars 1. ...
... UV Eruptive variables of the UV Ceti type, these are K Ve-M Ve stars sometimes displaying flare activity with amplitudes from several tenths of a magnitude up to 6 mag in V. The amplitude is considerably greater in the ultraviolet spectral region. ...
... UV Eruptive variables of the UV Ceti type, these are K Ve-M Ve stars sometimes displaying flare activity with amplitudes from several tenths of a magnitude up to 6 mag in V. The amplitude is considerably greater in the ultraviolet spectral region. ...
... UV variables of the UV Ceti type, these are K Ve-M Ve stars sometimes displaying flare activity with amplitudes from several tenths of a magnitude up to 6 mag in V. The amplitude is considerably greater in the ultraviolet spectral region. ...
... star the hydrogen emission lines and ultraviolet NQ Gem continuous emission appeared ... 0.10008215d x E, D = 0.1P. V1250 Her Ultraviolet flare amplitude in excess of 1.4m ...