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WBVR photometry of SS 433 - Spectra of the 'normal' star and the accretion disk
The characterization of SS 433 as a massive, eclipsing binary system hasbeen confirmed by the construction of continuous emission spectra of the'normal' star and the accretion disk in the wavelength range of 3500 Ato 2.2 microns. The investigation employed photometry of SS 433 atdifferent phases of the orbital period as well as photometric data inthe infrared range. The temperature of the normal star is about 20,000 Kand its mass is greater than 10 solar masses. The optically thinaccretion disk surrounds a relativistic object 'precessing' with aperiod of about 164 days. The spectrum of the projection of the disk canbe described by a Planck function with temperature of 50,000 K or more.Its bolometric luminosity is 10 to the 40th ergs/s or more. The analogybetween the processes taking place in the disk and those observed ingalactic nuclei and quasars is pointed out.
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Osservazione e dati astrometrici
| Costellazione: | Acquario |
| Ascensione retta: | 21h07m42.46s |
| Declinazione: | -02°03'07.9" |
| Magnitudine apparente: | 6.87 |
| Distanza: | 78.555 parsec |
| Moto proprio RA: | 86.9 |
| Moto proprio Dec: | 7.7 |
| B-T magnitude: | 7.109 |
| V-T magnitude: | 6.89 |
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