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 Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We explore the possible connection between the open cluster IC 2391 and theunbound Argus association identified by the SACY survey. In addition to commonkinematics and ages between these two systems, here we explore their chemicalabundance patterns to confirm if the two substructures shared a common origin.We carry out a homogenous high-resolution elemental abundance study of eightconfirmed members of IC 2391 as well as six members of the Argus associationusing UVES spectra. We derive spectroscopic stellar parameters and abundancesfor Fe, Na, Mg, Al, Si, Ca, Ti, Cr, Ni and Ba.  All stars in the open cluster and Argus association were found to sharesimilar abundances with the scatter well within the uncertainties, where [Fe/H]= -0.04 +/-0.03 for cluster stars and [Fe/H] = -0.06 +/-0.05 for Argus stars.Effects of over-ionisation/excitation were seen for stars cooler than roughly5200K as previously noted in the literature. Also, enhanced Ba abundances ofaround 0.6 dex were observed in both systems. The common ages, kinematics andchemical abundances strongly support that the Argus association starsoriginated from the open cluster IC 2391. Simple modeling of this system findthis dissolution to be consistent with two-body interactions.

Search for Associations Containing Young stars (SACY): Chemical tagging IC 2391 & the Argus association