Yet more on the circumbinary disk of SS 433

Abstract

The H and He emission lines of the microquasar SS 433 contain features that look very like emission from a circumbinary ring. Phenomenological models have been successful but contain certain ad hoc features. In this note the lines are treated as recombination lines from a highly ionized environment and differences between H and He, previously unexplained, are understood in terms of the different ionization potentials. It now seems inconceivable that these spectral features have origin other than in a circumbinary ring orbiting at approximately 250 km/s - in which case the system mass is approximately 40 solar masses.

6 pages, 7 figures. Submitted to A & A version 1.2 (25 Aug 13) has an additional section on the radiated intensity in H alpha. This is essentially the published version (see below)

References in corpus (1)

• Spectroscopic Observations of the Mass Donor Star in SS 433

Cited by in corpus (7)

• Electromagnetic signals following stellar-mass black hole mergers
• Relativistic 3D jet simulations for the X-ray binary SS433
• SS433: a massive X-ray binary at advanced evolutionary stage
• INTEGRAL observations of SS433: system's parameters and nutation of supercritical accretion disk
• Outbursts of the intermediate-mass black hole HLX-1: a wind instability scenario
• An optical spectroscopic and polarimetric study of the microquasar binary system SS 433
• The Spectrum of SS 433 in the H and K Bands