UOCS VII. Blue Straggler Populations of Open Cluster NGC 7789 with UVIT/AstroSat

@inproceedings{Vaidya2022UOCSVB,
  title={UOCS VII. Blue Straggler Populations of Open Cluster NGC 7789 with UVIT/AstroSat},
  author={Kaushar Vaidya and Anju Panthi and Manan Agarwal and Sindhu Pandey and Khushboo K. Rao and Vikrant V. Jadhav and Annapurni Subramaniam},
  year={2022}
}
NGC 7789 is a ∼1.6 Gyr old, populous open cluster located at ∼2000 pc. We characterize the blue straggler stars (BSS) of this cluster using the Ultraviolet (UV) data from the UVIT/AstroSat. We present spectral energy distributions (SED) of 15 BSS candidates constructed using multi-wavelength data ranging from UV to IR wavelengths. In 8 BSS candidates, a single temperature SED is found to be satisfactory. We discover hot companions in 5 BSS candidates. The hot companions with Teff ∼11750–15500 K… 

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