SS 433: Stationary lines and primary eclipses
M. G. Bowler
TL;DR
This paper investigates the spectral lines of SS 433, revealing that some stationary lines are eclipsed while others are not, and providing measurements of orbital speed through Doppler shifts.
Contribution
It identifies the behavior of stationary lines during eclipses and measures the orbital speed using Doppler shifts, offering new insights into the system's structure.
Findings
Stationary lines are partially eclipsed; most are not.
Lines from a circumbinary disk are not eclipsed but increase in intensity during primary eclipse.
Doppler shifts of a C II doublet yield an orbital speed of 176 +/- 13 km/s.
Abstract
Some stationary lines in the emission spectra of SS 433 are eclipsed, but most are not. Lines attributed to a circumbinary disk are not eclipsed, but double in relative intensity during primary eclipse. A C II doublet is eclipsed and Doppler shifts over two periods yield an orbital speed of 176 +/- 13 km/s.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astro and Planetary Science · Astronomical Observations and Instrumentation