Search Publications

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…