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 present beryllium (Be) abundances in a large sample of 41extra-solar planet host stars, and for 29 stars without any knownplanetary-mass companion, spanning a large range of effective temperatures. TheBe abundances were derived through spectral synthesis done in standard LocalThermodynamic Equilibrium, using spectra obtained with various instruments. Theresults seem to confirm that overall, planet-host stars have ``normal'' Beabundances, although a small, but not significant, difference might be present.This result is discussed, and we show that this difference is probably not dueto any stellar ``pollution'' events. In other words, our results support theidea that the high-metal content of planet-host stars has, overall, a``primordial'' origin. However, we also find a small subset of planet-hostlate-F and early-G dwarfs that might have higher than average Be abundances.The reason for the offset is not clear, and might be related either to theengulfment of planetary material, to galactic chemical evolution effects, or tostellar-mass differences for stars of similar temperature.Comment: 15 pages, 9 figures, accepted for publication in Astronomy &  Astrophysic

Are beryllium abundances anomalous in stars with giant planets?