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Boss 1985 : mass loss investigation based on IUE spectra.
Reimers, D.; Che, A.
From recent IUE observations of Boss 1985 - a VV Cep type spectroscopic binary - the authors deduce the mass loss rate of the primary M star using a non-spherical three-dimensional line transfer code applied on Fe II UV mult. 9 lines. Best agreement between observed and computed line profiles is obtained using wind velocity of 10±5 km s-1
ESO 438 -G 9 : a Seyfert galaxy with unusual properties.
Kollatschny, W.; Fricke, K. J.
The authors discuss optical and UV spectroscopic data of the 1.5 Seyfert galaxy ESO 438-G9 found from a survey of barred galaxies. Its spectrum shows strong Fe II emission. A very steep continuum gradient in the UV is reflected in the absence of higher ionization lines. A double absorption feature is present shortward of the Hα and Hβ emission lin…
Interstellar proteins and the discovery of a new absorption feature at λ=2800 Å
Wickramasinghe, N. C.; Karim, L. M.; Hoyle, F.
The discovery of a broad interstellar absorption feature centred on λ2800 Å in the extinction curve of starlight confirms the presence of proteinaceous material in grains.
Sharp shortward-shifted features in the spectra of O subdwarfs.
Bruhweiler, F. C.; Dean, C. A.
Preliminary inspection of archival high-dispersion ultraviolet spectra obtained by the International Ultraviolet Explorer reveal sharp shortward-shifted features in the spectra of O subdwarfs. In three examples presented here, BD + 75.325 deg, HD 128220 B, and BD + 28.4211 deg, stable, multiple, discrete shortward-shifted components of the N V, C …
Ultraviolet and optical observations of two stars belonging to the blue horizontal branch of the globular cluster M 15.
Seaton, M. J.; Auriere, M.; Adams, S.
Two stars belonging to the blue horizontal branch of the globular cluster M 15 have been observed in the ultraviolet with lUE and measurements have been made of their U B and V magnitudes. Measurements have also been made of B and V magnitudes for all the other stars which were in the JUE aperture and which are resolved in optical observations. Co…
IUE observations of stars in the M8 nebula.
Welsh, B. Y.
The early-type stars HD 164794, 164816, 164906 and 165052 belonging to the M8 nebula have been observed at high resolution using the IUE satellite. High velocity interstellar absorption components have been detected in each star's spectra at velocities of -32 and -53 km s-1. Such features must span across at least 8 pc in the nebula. A …
IUE observations of the eclipsing binaries TV CAS and YZ Cas.
de Landtsheer, A. C.; Mulder, P. S.
Two high resolution IUE spectra of the primaries of the eclipsing binaries TV Cas and YZ Cas are used to derive iron group abundances. YZ Cas shows clear metallicity effects (Fe is 6 times over abundant), while TV Cas does not. The metals in YZ Cas add up to a Z value of over 0.03. The microturbulent velocities are 6.5 km s-1 (TV Cas) a…
The temperature of the pulsating DB white dwarf GD 358.
Koester, D.; Weidemann, V.; Vauclair, G.
IUE observations of the DB white dwarf GD 358, which has recently been shown to be pulsating, combined with an evaluation of multichannel photometry demonstrate that this star has an effective temperature of about 26000 + or - 2000 K. This is considerably higher than predicted by Winget et al. (1982), but is still in qualitative agreement with pul…
Identification of the soft X-ray source H1011-47 (= E1013-477): a newmagnetic variable?
Reichert, G. A.; Bowyer, S.; Córdova, F. A. +4 more
A variable blue emission-line star is determined to be the probable counterpart of the HEAO-1 soft X-ray source H1011-47 on the basis of an improved position derived with the Einstein satellite. The star is found to vary between magnitudes of 16.7 and 17.7 on a time scale of approximately 100 minutes and by as much as 0.6 magnitude on a time scale…
Two new possible planetary nebulae.
Gull, T. R.; Heckathorn, J. N.; Fesen, R. A.
The authors have identified two new possible planetary nebulae using the Parker, Gull, and Kirshner (1979) emission-line survey of the galactic plane. Both objects exhibit very strong [O III] λ5007 line emission, a symmetrical morphology, and a faint blue central star.