The Westerbork Coma Survey

We present the blind Westerbork Coma Survey probing HI content of galaxy cluster with Synthesis Radio Telescope. The survey covers inner $\sim$ 1 Mpc around centre, extending out to 1.5 towards south-western NGC 4839 group. probes atomic gas in entire volume down a sensitivity 10$^{19}$ cm$^{-2}$ and 10$^8$ M$_{\odot}$. Combining automated source finding extraction at optical redshifts visual verification, we obtained 40 detections which 24 are new. Over half sample displays perturbed morphologies indicative an ongoing interaction environment. With use ancillary UV mid-IR, data measured their stellar masses star formation rates compared properties set field galaxies spanning similar mass rate range. find that 75 % HI-selected have simultaneously enhanced (by 0.2 dex) deficient 0.5 same mass. According our toy model, simultaneous deficiency activity can be attributed either stripping already highly forming on very short timescale, while H$_2$ remains largely unaffected, or coupled temporary boost HI-to-H$_2$ conversion, causing brief starburst phase triggered by ram pressure before eventually quenching galaxy.