Search Publications
The IUE spectral atlas of two normal B stars : pi Ceti and nu Capricorni (125-198 nm).
Lanz, T.; Borsenberger, J.; Artu, M. -C.
The ultraviolet spectra of two main-sequence B stars, Pi Cet (HD 17081) and Nu Capricorni (HD 193432) recorded by the IUE satellite have been used to elaborate a reference atlas, with line identification, in the low wavelength range 125-198 nm. To obtain realistic identifications and to select the dominant contributors in blends, a synthetic calcu…
Atlas of wavelength dependence of ultraviolet extinction in the galaxy.
Greenberg, J. M.; Patriarchi, P.; Perinotto, M. +3 more
The paper presents a collection of 115 extinction curves derived from low dispersion IUE spectra. The spectra have been reduced with the use of techniques designed to reduce the effects of random noise and the influence of residual spectral features due to classification mismatch. The magnitudes of other instrumental and interpretational uncertain…
Long slit spectroscopy of emission line galaxies. I. The sample.
Durret, F.; Bergeron, J.
We present optical long slit spectroscopy for a sample of fifteen emission line galaxies with nuclei showing a sequence of activity levels in the radio, X-ray and/or optical ranges. They are presented in order of increasing activity in the optical range: LINERs, Seyfert 2s, obscured Seyfert 1s and Seyfert 1s. The existence of extended ionized enve…
Spectroscopy of the present extraordinary bright outburst phase of the LMC S DOR variable R 127.
Stahl, O.; Wolf, B.; Smolinski, J. +1 more
We observed the S Dor variable R 127 in 1986, August 22, when it was the visually brightest star of the LMC at high dispersion in the optical range with CASPEC. We discuss this echelle spectrogram together with spectra taken at earlier epochs with the same instrument to study the spectral evolution of R 127 during outburst. In addition a high disp…
The far UV spectrum of the Be star 88 Herculis.
Danezis, E.; Theodossiou, E.
A high-resolution FUV spectrum of 88 Her, obtained with the IUE short-wavelength primary instrument on May 23, 1984, is analyzed. Line identifications for the 110-210-nm range, determined on the basis of the multiplet tables of Moore (1968) and Kelly and Palumbo (1979) are presented in a table, and a list of unidentified lines is also provided. Th…
Ultraviolet observations of cataclysmic variables : the IUE archive.
Verbunt, F.
A comparative study of the ultraviolet properties of cataclysmic variables is made on the basis of the IUE data archive. The reddening to 51 systems is determined from the 2200 Å feature. The spectral flux distribution of cataclysmic variables does not depend on system type, orbital period or (for dwarf novae) average length of interval between ou…
The final COS-B database - In-flight calibration of sensitivity and instrumental background behaviour
Strong, A. W.; Hermsen, W.; Lebrun, F. +3 more
This is one in a series of papers prepared in association with the release of the final COS-B database. Various aspects of the performance of the COS-B gamma-ray telescope are studied using in-flight data. First, the time-variation of the sensitivity and background over the 6.7 years of the mission is investigated. COS-B observed many regions of t…
Spectral features of the B2e star EW Lac before and during the variable shell phase.
Floquet, M.; Hubert, A. M.; Chauville, J. +1 more
An examination of the spectral characteristics of the B2e shell star EW Lac before and during the variable shell phase is presented based on 93 spectrograms obtained between 1960 and 1984 with the Haute Provence Observatory coude spectrograph. Characteristics of the prevariable shell phase include radial velocity fluctuations of shell lines of wea…
Identification lists of the far UV spectra of 7 solar chemical composition main sequence stars in the spectral range B2-B9.5.
Pasian, F.; Castelli, F.; Morossi, C. +2 more
The authors present the identification lists for the far UV spectrum of 7 main-sequence stars with solar chemical composition, covering the spectral type range B2 - B9.5, to be used for comparison purposes in the analysis of UV spectra. The lists have been obtained by means of an automatic procedure developed by the authors consisting of the autom…
The ultraviolet spectrum of the peculiar emission-line star GG Carinae : the line identifications.
Gosset, E.; Brandi, E.
Line features as well as the continuum of GG Carinae in the ultraviolet wavelength domain were described by Brandi et al. (1986) on the basis of a series of high and low resolution IUE spectra for which the line identifications are detailed here. The present contribution is thus the complement to the above-mentioned paper and enables the disentang…