... Molecular hydrogen emission in the interstellar medium of the Large Magellanic Cloud . ... We present the detection and analysis of molecular hydrogen emission towards ten interstellar regions in the Large Magellanic ...
... An Extremely Large Excess of 18O in the Hydrogen-deficient Carbon Star HD 137613 . ... discovery of a uniquely large excess of 18O in the hydrogen-deficient carbon (HdC) star HD 137613 based on a spectrum of the ...
... The HIPASS H-alpha survey is a project to measure ionized hydrogen in a sample of 500 galaxies selected via their 21-cm neutral hydrogen emission. ...
... Sun is powered by nuclear fusion: hydrogen `burns' to form helium, releasing energy ... but the supply of hydrogen is not infinite. ~10% of the Sun's mass is available as ...
... An Arecibo Search for Broad 21 cm Lines of Atomic Hydrogen in Clusters of Galaxies. ... which is allowed by the observations makes it unlikely that there is very much atomic hydrogen in the ICM of these clusters ...
... Simulated Pure Hydrogen Spectrum . Simulated Hydrogen and Helium Only Spectrum. ... Simulated Pure Hydrogen Spectrum . Simulated Hydrogen and Helium Only Spectrum. ... here could be identified as due to Hydrogen and Helium, while many of the other ...
... The hydrogen component in a highly inhomogeneous universe is completely reionized when the number of ionizing photons emitted in one recombination time equals the mean number of hydrogen atoms. ...
... The hydrogen line is the most pronounced absorption feature in spectra of B-type ... Theoretical profiles of the hydrogen line are calculated for Kurucz's (1979) models ...