Short paper: Photometric and spectroscopic observations of the outburst of the symbiotic star AG Draconis between 2016 March and June
The symbiotic star AG Draconis experienced a double-peaked outburst of 0.6 magnitudes in 2016 April and May. Photometry and spectroscopy through the outburst showed the B-V colour index varying linearly with the V magnitude and enabled the temperature variation of the hot star to be calculated from the changing flux in the Hb and He II 4686Å emission lines.
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