English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

We present deep J,H,Ks photometry and accurate Color Magnitude Diagrams downto K ~18.5, for a sample of 13 globular clusters in the Large Magellanic Cloud.This data set combined with the previous sample of 6 clusters published by ourgroup gives the opportunity to study the properties of giant stars in clusterswith different ages (ranging from ~80 Myr up to ~3.5 Gyr). Quantitativeestimates of star population ratios (by number and luminosity) in theAsymptotic Giant Branch, the Red Giant Branch and the He-clump, have beenobtained and compared with theoretical models in the framework of probing theso-called phase transitions. The AGB contribution to the total luminositystarts to be significant at ~200 Myr and reaches its maximum at ~5-600 Myr,when the RGB Phase Transition is starting. At ~900 Myr the full developing ofan extended and well populated RGB has been completed. Both the occurrence ofthe AGB and RGB Phase Transitions are sharp events, lasting a few hundreds Myronly. These empirical results agree very well with the theoretical predictionsof simple stellar population models based on canonical tracks and thefuel-consumption approach.Comment: 32 pages, 11 figures, accepted to Ap

Red Giant Stars in the Large Magellanic Cloud Clusters