Search Publications
Modulation of Galactic Cosmic Ray Particles Observed on Board the ULYSSES Spacecraft
Kunow, H.; Wibberenz, G.; Heber, B. +9 more
Line Profile Variations in M Giants: Clues to Mass-Loss and Chromospheric Heating Mechanisms
Judge, P. G.; Stencel, R. E.; Cuntz, M. +2 more
Analysis is presented of time-series, high dispersion spectra of the Mg II, k, Ca II H, and K lines of the semiregular giants Rho Per (M4 II-III, periodicity of about 50 days), R Lyr (M5 III, period of about 46 days), and g Her (M6 III, period of about 90 days). The fine error sensor on the IUE satellite and ground based UBV photometry was used to…
Maximum entropy restoration of blurred and oversaturated Hubble Space Telescope imagery
Dorband, J. E.; Bonavito, N. L.; Busse, T.
Multifrequency Comparison of Cepheids and Nonvariable Supergiants
Evans, Nancy R.; Jiang, Jonathan H.; Campins, Humberto +1 more
New IUE data and infrared J, H, K, L, and M observations have been obtained for nonvariable yellow supergiants and the prototype classical Cepheid Delta Cephei. These data have been combined with data in the literature to make a comparison between nonvariable yellow supergiants and Delta Cephei from the UV through the near-IR. The supergiant seque…
Ulysses measurements of energetic H3 molecules in Jupiter's magnetosphere
Lanzerotti, L. J.; Maclennan, C. G.; Feldman, D. M.
The Voyager 2 measurements of energetic (~1 MeV/nucleon) H3 molecules in Jupiter's magnetosphere provided strong evidence that the planet's ionosphere is an important plasma source in the Jovian environment (Hamilton et al., 1980). During the Ulysses spacecraft encounter with Jupiter in February 1992 the Heliosphere Instrument for Spect…
Ulysses observations of the planetary depletion layer at Jupiter
Smith, E. J.; Bame, S. J.; Phillips, J. L. +2 more
The repeated samplings of the Jovian magnetosheath during the Ulysses encounter with Jupiter provided an opportunity to probe the planetary depletion layer. Of the 10 complete crossings of the Jovian magnetopause, only three contained clear signatures of an overlying depletion layer. All of these occurred on the flanks of the magnetosphere near th…
Radiative energy flux changes of PLEIONE in the far-UV through the Be-shell ---> Be transition.
Mauron, N.; Doazan, V.; Barylak, M. +2 more
We present far UV observations of Pleione made with the IUE satellite in the time-interval 1979-1991 which show, for the first time in the wavelength range 1250-3000 A, the dramatic changes of the FUV radiative energy flux between the Be-shell and the Be phases of a Be star. Between 1979, when Pleione exhibited a strong shell spectrum, and 1991, w…
Spectroscopic binary orbits from ultraviolet radial velocities. Paper 11: delta Circini (HD 135240)
Stickland, D. J.; Pachoulakis, I.; Koch, R. H. +1 more
Spectrophotometric behavior of 56 Arietis.
Stepien, K.; Czechowski, W.
Archival IUE and published visual spectrophotometric data on the magnetic CP star 56 Ari are combined in nearly 20 energy distributions for different phases of the rotational cycle. Comparison with spectral variations shows that the light variations in the shortest wavelength region are strongly influenced by the nonuniformity of the silicon distr…
Far-Ultraviolet Stellar Photometry: A Field in Orion
Schmidt, Edward G.; Carruthers, George R.
Far-ultraviolet photometry for 625 objects in Orion is presented. These data were extracted from electrographic camera images obtained during sounding rocket flights in 1975 and 1982. The 1975 images were centered close to the belt of Orion while the 1982 images were centered approximately 9 deg further north. One hundred and fifty stars fell in t…