- hydrogen stars
- звезды, относящиеся к спектральному классу «А» и характеризующиеся интенсивными линиями поглощения водорода
English-russian astronautics dictionary. - M.: Military Publishing house. Compiled by F. P. Suprun, K. V. Shirokov. 1964.
hydrogen stars
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Hydrogen cyanide — IUPAC name … Wikipedia
Hydrogen — This article is about the chemistry of hydrogen. For the physics of atomic hydrogen, see Hydrogen atom. For other meanings, see Hydrogen (disambiguation). ← hydrogen → helium … Wikipedia
Hydrogen line — For hydrogen lines in general, see Hydrogen spectral series. The hydrogen line, 21 centimeter line or HI line refers to the electromagnetic radiation spectral line that is created by a change in the energy state of neutral hydrogen atoms. This… … Wikipedia
Hydrogen burning process — In the context of stellar nucleosynthesis, a hydrogen burning process can refer to either the proton proton chain reactions dominant in main sequence stars lighter than at most 5 solar masses, or to the CNO cycle dominant in heavier stars. Both… … Wikipedia
Hydrogen anion — The hydrogen anion is a negative hydrogen ion, H−. It is an important constituent of the atmosphere of stars, such as the Sun, where it is the dominant absorber of photons with energies in the range 0.75 0.4 eV, ranging from the infrared into the … Wikipedia
hydrogen cloud — ▪ astronomy also spelled H I region or H i region in astronomy, interstellar matter composed of neutral hydrogen atoms. Most of the matter between the stars in the Milky Way Galaxy, to which the Earth belongs, as well as in other spiral … Universalium
hydrogen burning — noun the nucleosynthesis process, in stars of less than 1.2 solar mass, in which hydrogen is converted to helium, deuterium and some lithium … Wiktionary
Herbig Ae/Be stars — are pre main sequence stars young ( … Wikipedia
List of nearest stars — Artist s conception of a red dwarf star, the most common type of star in the Sun s stellar neighborhood, and in the universe. Although termed a red dwarf, the surface temperature of this star would give it an orange hue when viewed from close… … Wikipedia
Revolt in the Stars — is a science fiction film screenplay written by Scientology founder and science fiction writer L. Ron Hubbard in 1977.cite book | last =Atack | first =Jon | authorlink =Jon Atack | title = | publisher =Carol Publishing Group | date =1990 |… … Wikipedia
Timeline of white dwarfs, neutron stars, and supernovae — Timeline of white dwarfs, neutron stars, and supernovaeNote that this list is mainly about the development of knowledge, but also about some supernovae taking place. For a separate list of the latter, see the section Notable supernovae in the… … Wikipedia
