Accretion-ejection morphology of the microquasar SS 433 resolved at sub-au scale

P. O. Petrucci, Idel Waisberg, J.-B. Le Bouquin, Jason Dexter, G. Dubus, K. Perraut, P. Kervella, R. Abuter, A. Amorim, Narsireddy Anugu

Abstract

We present the first optical observation at sub-milliarcsecond (mas) scale of the microquasar SS 433 obtained with the GRAVITY instrument on the VLT interferometer. The 3.5 hour exposure reveals a rich K-band spectrum dominated by hydrogen Br$γ $ and \ion{He}{i} lines, as well as (red-shifted) emission lines coming from the jets. The K-band continuum emitting region is dominated by a marginally resolved point source ($

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• Astronomy and Astrophysics - View - PDF
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