SS 433 in the ultraviolet.

Details SS 433 in the ultraviolet. SS 433 in the ultraviolet.

Nov 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997a%26a...327..648d&link_type=abstract

Astronomy and Astrophysics, v.327, p.648-655

Astronomy and Astrophysics

Astrophysics

27

Polarization, Stars: Individual: Ss 433, Ultraviolet: Stars

Scientific paper

The High Speed Photometer (HSP) on the Hubble Space Telescope observed SS 433 at 15 different epochs between 1993 May and November. Polarimetric observations were obtained in a 340Å FWHM bandpass centered at 2770Å; photometric observations were made in a bandpass extending between 1400 and 3000Å. The polarization in the UV is both large (
=13+/-4%) and variable. Observations at the 6-m telescope of the Special Astrophysical Observatory find the polarization in the U band to be intermediate in magnitude between that in the V band and that we detect in the UV. These results are best explained by the existence of a Rayleigh scattering component in the polarized radiation. Less than 1.2% of the flux from SS 433 between 1400 and 3000Å is modulated with a period between 200μs and 100s at 164-d phase ψ=0.131, when the two sets of emission lines in the SS 433 spectrum have a local maximum in the separation of their redshifts.

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