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

Aims: Time series of high-resolution spectra of the late B-type star HD 11753exhibiting HgMn chemical peculiarity are used to study the surface distributionof different chemical elements and their temporal evolution. Methods:High-resolution and high signal-to-noise ratio spectra were obtained using theCORALIE spectrograph at La Silla in 2000, 2009, and 2010. Surface maps of YII,SrII, TiII, and CrII were calculated using the Doppler imaging technique. Theresults were also compared to equivalent width measurements. The evolution ofchemical spots both on short and long time scales were investigated. Results:We determine the binary orbit of HD 11753 and fine-tune the rotation period ofthe primary. The earlier discovered fast evolution of the chemical spots isconfirmed by an analysis using both the chemical spot maps and equivalent widthmeasurements. In addition, a long-term decrease in the overall YII and SrIIabundances is discovered. A detailed analysis of the chemical spotconfigurations reveals some possible evidence that a very weak differentialrotation is operating in HD 11753.

Chemical surface inhomogeneities in late B-type stars with Hg and Mn peculiarity I Spot evolution in HD 11753 on short and long time scales