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Stellar astronomy > Stellar types > Chemically peculiar stars > Magnetic stars > Mercury-manganese stars
Stellar astronomy > Stellar types > Chemically peculiar stars > Mercury-manganese stars
Stellar astronomy > Stellar types > Stellar spectral types > B stars > Mercury-manganese stars
Stellar astronomy > Stellar types > Early-type stars > B stars > Mercury-manganese stars

Preferred term

Mercury-manganese stars  

Definition

  • Chemically peculiar stars of late B-types. The most distinctive features of Mercury-manganese stars are extreme atmospheric overabundance of Hg (up to 5 dex) and of Mn (up to 3 dex). The origin of abundance anomalies observed in late B-type stars with HgMn peculiarity is still poorly understood. More than two thirds of the HgMn stars are known to belong to spectroscopic binaries with a preference of orbital periods ranging from 3 to 20 days. (en)

Broader concept

Entry terms

  • Mercury manganese stars (en)

Contributor

Editorial note

URI

http://astrothesaurus.org/uat/1025

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RDF/XML TURTLE JSON-LD Last modified 11/10/20