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An Evaluation of the Membership Probability of 212 λ Boo Stars. I. A Catalogue

Murphy, Simon J.; Cheng, Kwang-Ping; Neff, James E. +6 more

The literature on the λ Boo stars has grown to become somewhat heterogenous, as different authors have applied different criteria across the UV, optical, and infrared regions to determine the membership status of λ Boo candidates. We aim to clear up the confusion by consulting the literature on 212 objects that have been considered as λ Boo candid…

A FUSE View of Winds from the Central Stars of Planetary Nebulae

Guerrero, Martín A.; Ramos-Larios, Gerardo; Massa, Derck

Since the IUE satellite produced a vast collection of high-resolution UV spectra of the central stars of planetary nebulae (CSPNe), there has not been any further systematic study of the stellar winds of these stars. The high spectral resolution, sensitivity and large number of archival observations in the FUSE archive allow the study of the stell…

A Survey of IUE Spectra of the Active Binary System UX Arietis

Ekmekçi, Fehmi

To investigate the ultraviolet (UV) activity of the bright, non-eclipsing, double-lined spectroscopic binary system UX Ari, IUE spectra (194 images) were taken from the IUE archive. The spectra, obtained during the period 1978-1996, show emission lines originating in the chromosphere and transition region. The long-wavelength low dispersion spectr…

UBV Photometry of the Massive Eclipsing Binary TT Aur

Demircan, O.; Saygaç, A. T.; Özdemir, S. +5 more

UBV observations of the massive binary system TT Aur were carried out mainly at the Turkish National Observatory (TUG). These observations, together with IUE spectra and times of eclipse minima collected from the literature, were used to study the system parameters. Simultaneous solution of the light curves by the Wilson-Devinney code allows a sem…

Winds in central stars of planetary nebulae.

Patriarchi, P.; Perinotto, M.

IUE spectral analysis of the Be star HD 184279.

Hirata, R.; Dawanas, D. N.

SN 1987A in the UV : the progenitor star, the reddening and the possible detection of a UV light echo.

Gilmozzi, Roberto

Lyman: A new window on the universe - The phase A science report of the Australian Lyman Science Working Group

Cropper, M.; Tuohy, I. R.; Dopita, M. A. +2 more

The scientific objectives, technical feasibility, and engineering implementation of the Lyman high-orbit UV space observatory are discussed. The Lyman observatory is designed to study the waveband between 900 and 1250 A. The objectives of the mission include stellar research, the study of stellar evolution, planetary nebulae, the study of binaries…

Ultraviolet observations of SN 1987A.

Panagia, N.

Results are presented from IUE observations of SN 1987A. The general UV spectral evolution of the supernova is described. The UV and optical photometric data for SN 1987A are examined, focusing on the importance of the data for supernova energetics. It is concluded that SN 1987A is a normal Type II explosion with an unusually compact initial confi…