SS433: Observation of the circumbinary disc and extraction of the system mass

Details SS433: Observation of the circumbinary disc and extraction of the system mass SS433: Observation of the circumbinary disc and extraction of the system mass

2008-03-05

arxiv.org/abs/0803.0642v1

Astronomy and Astrophysics

Astrophysics

to appear in ApJ Lett

Scientific paper

The so-called "stationary" H-alpha line of SS433 is shown to consist of three components. A broad component is identified as emitted in that wind from the accretion disc which grows in speed with elevation above the plane of the disc. There are two narrow components, one permanently redshifted and the other permanently to the blue. These are remarkably steady in wavelength and must be emitted from a circumbinary ring, orbiting the centre of mass of the system rather than orbiting either the compact object or its companion: perhaps the inner rim of an excretion disc. The orbiting speed (approximately 200 km/s) of this ring material strongly favours a large mass for the enclosed system (around 40 solar masses), a large mass ratio for SS433, a mass for the compact object plus accretion disc of ~16 solar masses and hence the identity of the compact object as a rather massive stellar black hole.

Affiliated with

Also associated with

No associations

Rating

SS433: Observation of the circumbinary disc and extraction of the system mass does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with SS433: Observation of the circumbinary disc and extraction of the system mass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and SS433: Observation of the circumbinary disc and extraction of the system mass will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-161126