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

Ultracool dwarfs have emerged as key targets for searches of transitingexoplanets. Precise estimates of the host parameters (including mass, age, andradius) are fundamental to constrain the physical properties of orbitingexoplanets. We have extended our evolutionary code CLES (Code Li\'egeoisd'Evolution Stellaire) to the ultracool dwarf regime. We include relevantequations of state for H, He, as well as C and O elements to cover thetemperature-density regime of ultracool dwarf interiors. For variousmetallicities, we couple the interior models to two sets of model atmospheresas surface boundary conditions. We show that including C and O in the EOS has asignificant effect close the H-burning limit mass. The typical systematic errorassociated with uncertainties in input physics in evolutionary models is $\sim0.0005 M_\odot$. We test model results against observations for objects whoseparameters have been determined from independent techniques. We are able toreproduce dynamical mass measurements of LSPM J1314+1320AB within $1\sigma$with the condition of varying the metallicity (determined from calibrations) upto $2.5\sigma$. For GJ 65AB, a $2\sigma$ agreement is obtained betweenindividual masses from differential astrometry and those from evolutionarymodels. We provide tables of ultracool dwarf models for various masses andmetallicities that can be used as reference when estimating parameters forultracool objects.

Evolutionary models for ultracool dwarfs