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 Plus annual

Presents the access of premium content as premium feature

Premium Content

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 Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this paper we combine WFC3/UVIS F275W, F336W, and F438W data from the "UVLegacy Survey of Galactic Globular Clusters: Shedding Light on TheirPopulations and Formation" (GO-13297) HST Treasury program with F606W, F625W,F658N, and F814W ACS archive data for a multi-wavelength study of the globularcluster NGC 6352. In the color-magnitude and two-color diagrams obtained withappropriate combination of the photometry in the different bands we separatetwo distinct stellar populations and trace them from the main sequence to thesubgiant, red giant, horizontal and asymptotic giant branches. We infer thatthe two populations differ in He by Delta Y=0.029+/-0.006. With a new method,we also estimate the age difference between the two sequences. Assuming nodifference in [Fe/H] and [alpha/Fe], and the uncertainties on Delta Y, we founda difference in age between the two populations of 10+/-120 Myr. If we assume[Fe/H] and [alpha/Fe] differences of 0.02 dex (well within the uncertainties ofspectroscopic measurements), the total uncertainty in the relative age rises to~300 Myr.

monthly notices of the royal astronomical society

The Hubble Space Telescope UV Legacy Survey of Galactic Globular  Clusters. IV. Helium content and relative age of multiple stellar populations  within NGC 6352