Concept information
Terme préférentiel
O-type star
Définition(s)
- An O star, or O-type star, is a massive, luminous, blue star of spectral type O. O stars have surface temperatures of 30,000°–50,000°C and masses of 20–100 solar masses. Their spectra are dominated by emission lines of singly ionized helium (these lines forming the so-called Pickering series). Most other lines are from at least doubly ionized elements, although H and He I lines are also present. (Encyclopedia of Science, by David Darling, https://www.daviddarling.info/encyclopedia/O/Ostar.html)
Concept(s) générique(s)
Synonyme(s)
- O star
Traductions
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français
-
étoile O
URI
http://data.loterre.fr/ark:/67375/MDL-JDTMJ098-8
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