- helium variable stars
- estrellas variables de helio
English-Spanish dictionary of astronomy terms. 2014.
helium variable stars
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Variable star — A star is classified as variable if its apparent brightness as seen from Earth changes over time, whether the changes are due to variations in the star s actual luminosity, or to variations in the amount of the star s light that is blocked from… … Wikipedia
Helium-Blitz — Ein Helium Blitz (engl. Helium Flash) ist die explosionsartige Fusion von Helium im Drei Alpha Prozess (Heliumbrennen). Dies kann geschehen im Kern von Sternen mittlerer Masse von bis zu 2,2 Sonnenmassen, an der Oberfläche von weißen Zwergen oder … Deutsch Wikipedia
Variable cataclysmique — Vue d artiste d une variable cataclysmique Une étoile variable cataclysmique (CV en anglais) est un type d étoile binaire. Elle est constituée de deux étoiles : une primaire naine blanche, et une secondaire lui transférant sa masse. On… … Wikipédia en Français
Helium flash — A helium flash is the runaway fusion of helium in the core of low mass stars of less than about 2.25 solar masses and greater than about 0.5 solar mass, or on the surface of an accreting white dwarf star. They may also occur in the outer layers… … Wikipedia
Étoile variable cataclysmique — Variable cataclysmique Vue d artiste d une variable cataclysmique Une étoile variable cataclysmique (CV en anglais) est un type d étoile binaire. Elle est constituée de deux étoiles : une primaire naine blanche, et une secondaire transférant … Wikipédia en Français
Cepheid variable — This article is about a class of pulsating stars. For the similarly named constellation, see Cepheus (constellation). Cepheids redirects here. For the fictional species, see Blind Alley . A Cepheid ( /ˈs … Wikipedia
Delta Scuti variable — A Delta Scuti variable (sometimes termed dwarf cepheid) is a variable star which exhibits variations in its luminosity due to both radial and non radial pulsations of the star s surface. Typical brightness fluctuations are from 0.003 to 0.9… … Wikipedia
Semiregular variable star — Semiregular variable stars are giants or supergiants of intermediate and late spectral type showing considerable periodicity in their light changes, accompanied or sometimes interrupted by various irregularities. Periods lie in the range from 20… … Wikipedia
Orion variable — An Orion variable is a variable star which exhibits irregular and eruptive variations in its luminosity and is typically associated with diffuse nebulae. It is thought that these are young stars which will later become regular, non variable stars … Wikipedia
List of most luminous stars — Below is a list of stars arranged in order of decreasing luminosity (increasing bolometric magnitude). Accurate measurement of stellar luminosities is quite difficult in practice, even when the apparent magnitude is measured accurately, for three … Wikipedia
Cataclysmic variable star — Cataclysmic variable stars (CV) are stars which irregularly increase in brightness by a large factor, then drop back down to a quiescent state. They were initially called novae, from the Latin new , since ones with an outburst brightness visible… … Wikipedia
