Concept information
Terme préférentiel
A-type star
Définition(s)
- An A star is a star of spectral type A, white in color, with a spectrum dominated by the Balmer series of hydrogen. Lines of heavy elements, such as iron and calcium, are noticeable at the cooler end of the range. Main sequence A stars have surface temperatures of 7,500 to 9,900 K, luminosities of 7 to 80 times that of the Sun, and masses of 1.5 to 3 solar masses. Familiar examples include Sirius, Vega, and Altair. (Encyclopedia of Science, by David Darling, https://www.daviddarling.info/encyclopedia/A/Astar.html)
Concept(s) générique(s)
Synonyme(s)
- A star
Traductions
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français
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étoile A
URI
http://data.loterre.fr/ark:/67375/MDL-RDDKPJKV-M
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