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image/svg+xml Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Closed Access logo, derived from PLoS Open Access logo. This version with transparent background. http://commons.wikimedia.org/wiki/File:Closed_Access_logo_transparent.svg Jakob Voss, based on art designer at PLoS, modified by Wikipedia users Nina and Beao Astrophysics and Spa...arrow_drop_down
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Astrophysics and Space Science
Article . 1969 . Peer-reviewed
License: Springer TDM
Data sources: Crossref
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Horizontal-branch star models

Authors: Alvio Renzini; Vittorio Castellani; P. Giannone;

Horizontal-branch star models

Abstract

Evolutionary tracks of 0.9M ⊙, 0.7M ⊙ and 0.6M ⊙ models for Population II stars have been computed in the post-red giant phase. The stars are initially composed of a helium core containing a mass fraction equal to 0.9 and of a hydrogen-rich envelope. They represent hypothetical remnants of stars after substantial mass loss in previous evolutionary phases or/and at the helium flash. В работе рассчитаны эволюционные пути сдедуюшие за σтадией красных иγантов для моделей звёзд с массами 0,9M ⊙, 0,7M ⊙ и 0,6M ⊙ населения П типа. Исходние модели состгят из гелиевого ядра, содержащего 90% общей массы, и водородной ободочки. Их можно считать ‘остатками’ звезд, потерявших в акте предшествующей эволюции существенную частъ общей массы. E stata calcolata per modelli di stelle di 0,9M ⊙, 0,7M ⊙ e 0,6M ⊙ di Popolazione II l'evoluzione successiva allo stadio di gigante rossa. Inizialmente i modelli constano di un nucleo di elio contenente il 90% della massa totale e di un inviluppo idrogenico. Essi possono interpretarsi come i ‘resti’ di stelle che abbiano perso una frazione di massa considerevole in fasi evolutive precedenti, o all'innesco violento dell'elio al centro.

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
9
Average
Top 10%
Top 10%
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