SMSS J130522.47โ293113.0: a high-latitude stellar X-ray source with pc-scale outflow relics?
SMSS J130522.47โ293113.0: a high-latitude stellar X-ray source with pc-scale outflow relics?
We report the discovery of an unusual stellar system SMSS J130522.47โ293113.0. The optical spectrum is dominated by a blue continuum together with emission lines of hydrogen, neutral, and ionized helium, and the N iii, C iii blend at โผ4640โ4650 ร
. The emission-line profiles vary in strength and position on time-scales โฆ