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The interstellar lines and the energetics of the inner Doradus nebulafrom the ultraviolet spectrum of R 136a.
Feitzinger, J. V.; Hanuschik, R. W.; Schmidt-Kaler, Th.
An IUE short and long wavelength absorption line spectrum (1150 - 3000 Å) of the central superluminous object in the 30 Doradus nebula, R 136a, is analysed. Radial velocities and equivalent widths of the Magellanic interstellar components are given. The Magellanic interstellar components fall into four well-separated groups. The same groups show u…
IUE ultraviolet observations of narrow absorption components in the spectrum of dzeta Puppis.
Prinja, R. K.
Detailed IUE ultraviolet observations of multiple absorption components, observed superimposed on the Si IV λλ1393.76, 1402.77 P Cygni resonance line doublet in the O4ef star ζ Puppis, are presented. These components are observed in 16 out of 21 spectra at ≡0.75 and 0.82 of the terminal velocity over a period of three years up to 1981 and are stat…
Optical and ultraviolet study of five stars in the Pleiades open cluster
Dufton, P. L.; Younan, K. F.
Optical and ultraviolet observations of five low-reddened stars in the Pleiades open cluster have been obtained with an echelle spectrograph and the IUE satellite. The observed interstellar absorption lines have been analysed with different cloud models to estimate interstellar gas abundances for each line-of-sight. These results have been discuss…
Interstellar CO in the direction of the runaway star AE Aurigae.
Nandy, K.; McLachlan, A.
The detection of absorption by interstellar (C-12)(O-16) in a high-dispersion IUE spectrum of AE Aur is reported. Relative to an estimated total hydrogen column density of about 21.62 in the line-of-sight, the measured CO column density of 14.76 + or - 0.10, is consistent with the theoretical model of Federman et al. (1980) for gas-phase chemistry…
Correlation of gamma-ray fluxes with southern hemisphere CO data.
Manchester, R. N.; Wolfendale, A. W.; Whiteoak, J. B. +3 more
A new radio survey of the C-12O molecule in the Galactic plane covering the longitude range l:294 - 358 deg is compared with the flux of high energy gamma rays in the same region. A good correlation between the two is found, and it is shown that the data are consistent with the hypothesis that most of the gamma-ray flux is produced by the cosmic-r…
IUE observations of high velocity gas towards the M 16 nebula.
Welsh, B. Y.
The star HD 168183, which is part of the giant H II region-molecular cloud complex of M16 (NGC 6611), has been observed at high resolution using the IUE satellite. High velocity interstellar absorption components have been detected at velocities of -83, -38 and +40 km s-1 and it is proposed that a stellar wind-driven shock-front, intera…