... from RS CVn binaries C.K. Mitrou, M. Mathioudakis, J.G. Doyle and E. Antonopoulou A&A, in press We performed a study of 104 RS CVn systems in the extreme ultraviolet (EUV) using the all--sky survey data obtained by the Extreme Ultraviolet Explorer (EUVE ...
... 348 Electron density diagnostics for solar ultraviolet lines of O v . E. O'Shea, T. O'Neill, F.P. Keenan and J.G. Doyle . ... 336 Rotational modulation of the ultraviolet line fluxes from the RS CVn star II Pegasi . L.M. Sarro and P.B. Byrne . ...
... pulsation properties have been determined from visual and ultraviolet spectrophotometry and from spectroscopy by Landolt (1975 ... Figure 3: The ultraviolet and radial velocity behaviour of HD168476=PVTel (from Jeffery et al. 2000). ...
... The surface of our active Sun, as seen in ultraviolet light, . and visitors enjoying the 3-D views of the Sun . ... well as hands-on material to illustrate magnetic fields and ultraviolet light, and an interactive slide show and live images of ...
... Abstract. The ultraviolet properties of seventeen extreme helium stars have been examined using 150 IUE spectra. ... degenerate, and in the case of the cooler stars with large E_bv, where the total flux is no longer dominated by the ultraviolet ...
... The spectra were obtained with the Solar Ultraviolet Measurements of Emitted Radiation spectrometer flown on the Solar and ... Sun: Corona -Ultraviolet: SOHO--Sun: waves . To Appear in Astronomy & Astrophysics, 1998 . Dipankar Banerjee . ...
... Ultraviolet and optical data are used to look at surface inhomogeneities on the active close binary system SZ Piscium. ... of this system in the optical U-band and the ultraviolet lines such as C IV 1550 $\AA$, indicates frequent high energy (10$^{35 ...
... These have been supplemented by archival ultraviolet and visual spectrophotometry and used to make a time-dependent study of ... Masses measured without reference to the ultraviolet fluxes turn out to be unphysically low ($\sim0.18\Msolar$). ...
... The O IV and S IV intercombination lines in solar and spectra ultraviolet spectra J.W. Cook, F.P. Keenan, P.L. Dufton, A.E ... Subject headingss: atomic data Sun: spectra ultraviolet: spectra stars: latetype 1. ...
... Topics investigated include ultraviolet (UV) explosive events, UV/X-ray bright points, evidence for magnetic reconnection, plus a new proposed blinker model. ...