А жұлдызы

А жұлдызы

Star with spectral type A in which the spectrum of the Balmer lines of hydrogen attain their greatest strength. Helium lines can no longer be seen. Some metallic lines are present; in late A stars the H and K lines of ionized calcium appear. A0 stars have a color index of zero.

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Μέρος του λόγου: noun
Συνώνυμο(α):
Blossary:
Κλάδος/Τομέας: Αστρονομία
Category: Γενική αστρονομία
Company: Caltech
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Αστρονομία; Γενική αστρονομία

One of about a dozen of the strongest Fraunhofer lines seen in the Solar spectrum, the A band at 7600 angstoms is due to telluric lines of molecular oxygen in the Earth's ...

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Αστρονομία; Γενική αστρονομία

Trojan asteroid (60° ahead of Jupiter. It was the first Trojan to be discovered.

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Αστρονομία; Γενική αστρονομία

The number of protons in an atom's nucleus. This determines the type of element.

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Αστρονομία; Γενική αστρονομία

the light produced by excited atoms and ions in the upper atmosphere of a planet

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Αστρονομία; Γενική αστρονομία

1) Angular distance from the north point eastward to the intersection of the celestial horizon with the vertical circle passing through the object and the zenith. 2) Directional ...