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Comparison of Einstein and EXOSAT Observations of SS 433

Band, David L.

Observations with the Einstein telescope which show SS 433 to be a flaring X-ray source with a variable power-law spectrum are compared to Exosat observations which show a relatively quiescent X-ray spectrum with a prominent blueshifted iron line consistent with thermal emission in the jets. Models to explain the differences between the two studie…

The UV Spectrum of Pluto-Charon: IUE Observations from 2600 to 3100

Stern, S. A.; Skinner, T. E.; Trafton, L. M. +2 more

Observations of the UV spectra of the Pluto-Charon system were obtained between 1987 and 1988 using the large aperture of the IUE long-wavelength prime spectrograph. At the resolution and SNR of the data, no gas-phase spectral identifications were made. The present data indicate a geometric albedo of 0.35 + or - 0.05. Curve fitting the geometric a…

IUE Observations of the Interstellar Medium toward beta Geminorum

Moos, H. W.; Murthy, J.; Linsky, J. L. +4 more

A dispersion IUE spectrum of the hydrogen Ly-alpha emission line of the nearby late-type star Beta Gem is presented. Values are determined for the density, velocity, dispersion, and bulk velocity of the interstellar H I toward the star, showing agreement with previous IUE results for stars in the same general direction (Murthy et al., 1987). It is…

Analysis of the Velocity Law in the Wind of the Be Star lambda Pavonis

Sahade, Jorge; Kondo, Yoji; Chen, Haiqi +1 more

This paper reanalyzes the IUE spectra of Lambda Pavonis secured in 1982 (Sahade et al.). It is found that the profiles of the broad UV lines are either rotationally broadened or nonrotationally broadened and that the rotationally broadened profiles can be sorted out in two groups characterized by rotational velocity values of 170 km/s and of 210 k…

Galactic Interstellar Abundance Surveys with IUE. III. Silicon, Manganese, Iron, Sulfur, and Zinc: Erratum

Shull, J. Michael; van Steenberg, Michael E.

Sanduleak's Star (LMC Anonymous): Its Similarity in the Far-Ultraviolet with the Luminous Object eta Carinae and SN 1987A

Kafatos, M.; Michalitsianos, A. G.; Shore, S. N.

Spectra obtained in the far UV wavelength range 1200-2000 A with the International Ultraviolet Explorer (IUE) of the peculiar emission object LMC Anonymous, or Sanduleak's Star in the Large Magellanic Cloud, indicate the presence of circumstellar-high-excitation gas, which is rich in CNO processed material. Although LMC Anonymous is a field star w…

A New Narrow-Line Seyfert 1 Galaxy: IRAS 1652+395

Malkan, M. A.; Mandolesi, N.; Partridge, B. +3 more

Multiwavelength observations--from radio to X-rays--of IRAS 1652+395, a far-infrared and X-ray source serendipitously discovered in the field of the BL Lac object Mrk 501, are reported. They show that IRAS 1652+395 is a new Seyfert 1 galaxy at a redshift of z = 0.069. The Balmer emission lines are only slightly broader (~ 1000 km s^-1^ FWHM) than …

An Interpretation of the Line Profile Variations in the IUE Spectrum of the Wolf-Rayet Binary gamma 2 Velorum: Erratum

Sahade, Jorge; Brandi, Estela; Ferrer, Osvaldo