UVIT Open Cluster Study

UV provides a unique tool to identify and characterise hot subluminous compact stars (such as white dwarfs and subdwarfs). We used multi-wavelength spectral energy distributions to identify these cooler+hotter component systems. 

Many of the cooler components were blue stragglers (BSS) and main sequence (MS) stars. Importantly, many of the hot components are extremely low mass WD candidates (which are a result of mass transfer). This also resulted in the classification of the MS stars as blue lurkers (which are post-mass-transfer accreters on the main sequence).

Spectroscopic and time-domain follow-ups are ongoing.