Star clusters are ideal platforms for categorising X-ray emitting stars and to study X-ray emission as a function of stellar age and activity .
We present a comprehensive study of an open star cluster , NGC2527 , by combining data from XMM-UVOT-Gaia .
Cluster membership of stars and their photometry are taken from Gaia and cross-matched with XMM and UVOT detections .
We estimate the age of NGC2527 as \sim 630 Myr , reddening as E ( B - V ) =0.13 mag , and a distance of 642 \pm 30 pc using PARSEC isochrones .
We detect 5 sub-subgiants and 5 bandgap stars , which defy single star evolution .
We estimate the temperature , mass , radius , and luminosity of 53 single stars and 10 potential binary stars using a python code which fits single and composite Kurucz spectra to broad-band Spectral Energy Distribution .
Among the 12 X-ray emitting members , we find 5 are potential RS CVn type binaries , 2 are potential FK Comae type of RGB stars , and 5 are main sequence ( MS ) stars with high coronal activity .
Members with strong UV emission comprise of 1 RGB star , and several MS stars with UV excess suggestive of chromospheric activity .
Based on comparison with other clusters , we tentatively suggest that X-ray luminosity of both RS CVn and contact binaries increases with age suggesting more active binaries are present in older clusters as compared to younger clusters .
This study suggests possible presence of W UMa and FK Comae type stars in younger ( age \simeq 630 Myr ) clusters .