Search Publications
An ultraviolet line list for O star spectra.
Bruhweiler, F. C.; Dean, C. A.
Archival high dispersion UV spectra obtained by the IUE satellite, together with laboratory data for the Fe peak ions, reveal more than 550 identifiable spectral features in the far-UV region in the cases of the O subdwarfs BD +75 deg 325 and BD +28 deg 4211, as well as the sharp lined main sequence star HD 46202. The wide range of effective tempe…
Line identifications, line strengths and continuum flux measurements in the ultraviolet spectrum of Arcturus.
Carpenter, K. G.; Stencel, R. E.; Wing, R. F.
The ultraviolet spectrum of Arcturus has been observed at high resolution with the IUE satellite. Line identifications, mean absolute 'continuum' flux measurements, integrated absolute emission-line fluxes, and measurements of selected absorption line strengths are presented for the 2250-2930 A region. In the 1150-2000 A region, identifications ar…
IUE spectra of GO V-G5 V solar-type stars.
Basri, G.; Haisch, B. M.
An atlas of IUE short-wavelength spectra for a set of 14 bright G0 V-G5 V stars are presented, and it is shown that these manifest a range of qualitatively different chromospheric and transition region spectra and significant differences in radiative flux originating at the temperature minimum level. A comprehensive survey of observational data an…
High-dispersion ultraviolet spectra of the peculiar star RX Puppis.
Kafatos, M.; Michalitsianos, A. G.; Fahey, R. P.
High spectral resolution observations of the peculiar star RX Puppis obtained with the International Ultraviolet Explorer suggest the presence of a complex gaseous ring system which surrounds an accreting hot secondary. The anomalous line intensity ratio of the C IV 1548, 1550 A doublet during the observations exceeded the optically thick limit, i…
The early-type strong emission-line supergiants of the Magellanic Clouds : a spectroscopic zoology.
Shore, S. N.; Sanduleak, N.
The results of a spectroscopic survey of 21 early-type extreme emission line supergiants of the Large and Small Magellanic Clouds using IUE and optical spectra are presented. The combined observations are discussed and the literature on each star in the sample is summarized. The classification procedures and the methods by which effective temperat…
The S201 far-ultraviolet imaging survey. III. A field in Sagttarius.
Page, T.; Carruthers, G. R.
Far-ultraviolet imagery of a 20 deg diameter field in Sagittarius, centered near (1950) R.A. 18 h 34 m, decl. -30 deg 25 arcmin, was obtained by the S201 far-ultraviolet camera during the Apollo 16 mission. In a 10-minute exposure covering the 1250-1600 A wavelength range, 1034 star images are detectable, with a limiting ultraviolet magnitude of a…
Comparison of variations in the visible and ultraviolet spectra of a Centauri.
Fahey, R. P.
Equivalent-width and central depth measurements of some ultraviolet absorption lines from the spectrum of the He I spectrum variable star a Cen (HD 125823) are presented. The measurements are from 53 short-wavelength and 52 long-wavelength, high-resolution spectrographs taken with the IUE satellite over a 25d period during 1978 July and…
Ultraviolet spectroscopic observations of some Be stars of later typeand A-F type shell stars.
Carpenter, K. G.; Slettebak, A.
High-dispersion IUE spectra of 18 later type Be and A-F type shell stars as well as eight standard nonemission line stars have been analyzed for anomalous ionization and mass loss effects. It is found that superionization in the Be stars extends to the latest spectral subtypes but does not seem to be present in the A-F type stars. The superionized…
Abundances of carbon-bearing diatomic molecules in diffuse interstellar clouds.
Blades, J. C.; Whittet, D. C. B.; Somerville, W. B. +2 more
In order to test in detail theories concerning the gas-phase chemistry of light interstellar molecules, it is necessary to have a coherent body of observational data for a large number of sight lines. In the present investigation new and previously published data for 22 stellar lines of sight are combined to provide a basis for the study of the re…
IUE observations of SI and C lines and comparison with non-LTE models.
Kamp, L. W.
Classical model atmosphere techniques are applied to analyze IUE spectra, and to determine abundances, effective temperatures and gravities. Measurements of the equivalent widths and other properties of the line profiles of 24 photospheric lines of Si II, Si III, Si IV, C II, C III and C IV are presented in the range of 1175-1725 A for seven B and…