Titre du document

Extremely Young Stars

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Nom du Corpus

AstroConcepts

Auteur(s)
  • W. Wenzel
Affiliation(s)
  • Institut für Sternphysik, Sternwarte Sonneberg, DDR
Résumé

It is not so easy to give an Introductory Report on a topic like that, where during the last years new empirical material grew rapidly, a topic which is still too young for a consolidation of our knowledge. I must therefore concentrate on some partial questions which, according to my opinion, seem of some importance. When we speak now of extremely young variables we mean, of course, the evolutionary age (which is very short) and not the absolute age of the objects. In this way a B-type star of 106 years is no longer young, contrary to a K- or M-type star of the same age. Let us therefore call those stars very young ones which during their evolution have not yet reached the age zero main sequence, that is to say the gravitationally contracting stars.

Langue(s) du document
Anglais
Année de publication
1969
Revue

Non-Periodic Phenomena in Variable Stars

Éditeur
Springer (e-books)
Type de publication
book
Type de document
chapter
Présence de XML structuré
Non
Version de PDF
1.4
Score de qualité du texte
6.106
Nom du concept
  • FU Orionis stars
Identifiant ISTEX
F9A58FD12F73C9759FBA3F1A2433AEF0E8B42146
ark:/67375/HCB-T08B6HBR-8
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