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The astrophysical S-factor of the reaction Be-7(P,gamma)B-8 in the direct capture model
(1993)
The astrophysical S-factor for the reaction Be-7(p, gamma)B-8 up to an energy of 2 MeV (c.m.) and the capture cross section of Li-7(n, gamma)Li-8 up to 1 MeV (c.m.) are calculated using the Direct Capture model (DC). Both ...
New 325 MHz observations of H II galaxies - The mechanisms that shape the unusual radio spectra
(1993)
The B array of the VLA has observed a sample of seven H II galaxies at 325 and 1489 MHz; the radio continuum spectra thus obtained exhibit a wide variety of spectral shapes, but four show a significant flattening toward ...
An H I absorption survey of M31 and M33 - The mixture of warm and cool phases in the interstellar media of spiral galaxies
(1993)
The VLA in A-array is used to survey the nearby spiral galaxies M31 and M33 in the 21-cm line in order to measure absorption by the H I toward background continuum sources. Spectral line cubes with rms noise less than 1.2 ...
Static Instruction Scheduling for the HARP Multiple-Instruction-Issue Architecture
(1993)
HARP is a new multiple-instruction-issue architecture developed at the University of Hertfordshire. This paper describes the essential features of the HARP machine model and presents two compile-time scheduling techniques, ...
Discovery of another Am-Herculis Variable in the Period Gap
(1993)
Recently, Buckley et al. drew attention to a new AM Her variable, RE1938 - , discovered by the ROSAT survey with a period of 2.33 h which places it in the middle of the usual 2-3 h period gap for cataclysmic variables. ...
Excited hydrogen and the formation of molecular-hydrogen via associative ionization. 1 : Physical processes and outflows from young stellar objects
(1993)
Rates for the associative ionization reaction H(n=2)+H→H2++e- are calculated. This reaction is found to be a greater contributor to the H2 formation rate than the direct radiative association reaction H(n=2)+H→H2+hν in ...
Convective overshooting and the observed width of the main-sequence band
(Astronomical Society of the Pacific, 1993)
For many years we are witnessing a lively debate on the existence and extent of convective overshooting, mainly in the cores of main-sequence stars. This is an important issue, since even a small amount of overshooting ...
Evidence for an Obscured Broadline Region in the Early Type Radio Galaxy IC5063
(1993)
We report the detection of strong, broad Hα emission seen in polarized flux from the early-type radio galaxy IC 5063. This suggests that the galaxy has a broad-line region which is obscured from our direct view, with the ...