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Внешние кольца в дисковых галактиках ранних типов

Внешние кольца в дисковых галактиках ранних типов

Abstract

В работе исследована частота встречаемости текущего звездообразования во внешних звездных кольцах дисковых галактик ранних типов по представительной выборке близких галактик из каталога ARRAKIS. Показано, что в регулярных кольцах текущее звездообразование, с возрастом звездного населения менее 200 млн лет, наблюдается примерно в половине случаев. В псевдокольцах (разомкнутых кольцах), которые встречаются только в спиральных галактиках, текущее звездообразование наблюдается практически всегда.

We have studied the occurrence frequency of the current star formation in the outer stellar rings of early-type disk galaxies based on a representative sample of nearby galaxies from the ARRAKIS catalog. We show that regular rings reveal current star formation with a young stellar population age of less than 200 Myr in about half the cases, while in the pseudorings (open rings), which are only found in spiral galaxies, current star formation is present almost always.

Keywords

ГАЛАКТИКИ: СТРУКТУРА,ГАЛАКТИКИ: ЗВЕЗДООБРАЗОВАНИЕ,ГАЛАКТИКИ: ЭВОЛЮЦИЯ,ГАЛАКТИКИ: СТАТИСТИКА,GALAXIES: STRUCTURE,GALAXIES: STAR FORMATION,GALAXIES: EVOLUTION,GALAXIES: STATISTICS

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selected citations
These citations are derived from selected sources.
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!
0
Average
Average
Average