... Using the radio telescope GMRT (India) and the 6 m telescope of SAO RAS, maps of the distribution of neutral and ionized hydrogen have been obtained in 60 nearby dwarf galaxies whose luminosities range from 1/100 to 1/10000 of that of the Milky Way. ...

... The nebula in Orion's constellation is the cloud of ionized hydrogen, luminiscenting due to reworking of four stars irradiation (these stars are seen because of the great brightness of the central part of nebula). ...

... ionizing radiation from O stars manage to escape to such great distances from the Galactic midplane despite all of the ... were necessarily simplistic and because they only treated hydrogen ionization, they could not address the anomalously high [SII ...

... These stars pulsate because the hydrogen and helium ionization zones are close to ... ejected their remaining hydrogen envelope, which forms an ionized nebula surrounding ...

... one narrow band filter centered on an emission line from ionized hydrogen, we 'see' the gas brighter than the star light by a ...

... is above 10,000 K, hydrogen is completely ionized: This makes the gas fairly opaque ... For regions of the disk further out, hydrogen is not ionized and the disk is fairly ...

... calculating Calcium line profiles, we first re­ evaluate the Hydrogen ionization equilibrium in our mod­ els by using the code ... As a by­product of the Hydrogen ionization equilib­ rium calculation, we obtain synthetic Hff profiles. ...

... Ionization of hydrogen atom by a strong laser pulse This archetypical case is used to probe different schemes for numerical calculations of the corresponding Schroedinger equation. ...

... mode do not have labile hydrogens, while compounds ionizing in negative-ESI mode ... in negative mode and one hydrogen detached during ionization. dx.doi.org/10.1021 ... have exactly one labile hydrogen and this hydrogen detaches during ionization ...

... comes from requiring that some part of the accretion disc has a temperature below the hydrogen ionization temperature ... sufficient to require that the effective temperature at the outer edge of the disk is below the hydrogen ionization temperature ...