... Neutral and ionised hydrogen in NGCТљ4214 . V.J. McIntyre, PASA, 15 (1), 157 . ... Title/Abstract Page: Neutral and ionised hydrogen . Previous Section: Background . ... The H emission implies a local ionized gas density of 2-3Тљcm . ...
... to investigate how the efficiency of supernovae (SNe) feedback, AGN feedback and the strength of the photo-ionizing background during cosmological reionization affect the abundance and spatial clustering of neutral atomic hydrogen (HI) in galaxies at z=0 ...
... mass-loss has reduced the hydrogen abundance in the atmosphere, thereby raising the Fe/H ratios to the observed levels. the stars have normal s-process abundances, but because of their low 2nd ionization potentials, these elements are selectively over ...
... for the individual clumps, it is difficult to measure the velocity field of the diffuse ionized gas surrounding the bar ... bar is not as prominent in the distribution of the neutral hydrogen gas, the deviations from circular motions caused by the bar ...
... is less than 300 AU § Pumped by collisions with hydrogen and helium Need searches of various class I masers to develop a pumping model the spectrum of this offset component is plotted in red ¦ A molecular hydrogen image of the source obtained by Brooks et ...
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... and a case-A hydrogen recombination rate coefficient, . , at 20,000б K. The ionizing radiation field is . with . and . ... and a case-A hydrogen recombination rate coefficient, . , at 20,000б K. The ionizing radiation field is . with . and . ...