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 present optical lightcurves of 428 periodic variable stars coincident withROSAT X-ray sources, detected using the first run of the SuperWASP photometricsurvey. Only 68 of these were previously recognised as periodic variables. Afurther 30 of these objects are previously known pre-main sequence stars, forwhich we detect a modulation period for the first time. Amongst the newlyidentified periodic variables, many appear to be close eclipsing binaries,their X-ray emission is presumably the result of RS CVn type behaviour. Othersare probably BY Dra stars, pre-main sequence stars and other rapid rotatorsdisplaying enhanced coronal activity. A number of previously cataloguedpulsating variables (RR Lyr stars and Cepheids) coincident with X-ray sourcesare also seen, but we show that these are likely to be misclassifications. Weidentify four objects which are probable low mass eclipsing binary stars, basedon their very red colour and light curve morphology.

New periodic variable stars coincident withROSATsources discovered using SuperWASP