Constancy of the low resolution spectrum of SS 433

Details Constancy of the low resolution spectrum of SS 433 Constancy of the low resolution spectrum of SS 433

Oct 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...249l..19s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 249, Oct. 1, 1981, p. L19, L20.

Astronomy and Astrophysics

Astrophysics

1

Binary Stars, Radio Stars, Stellar Spectra, X Ray Stars, Dwarf Stars, K Stars, Stellar Spectrophotometry

Scientific paper

The low-resolution spectroscopic history of SS 433 is considered as an indication of its long-term behavior and the extent to which such objects may be singled out in future low-resolution surveys. It is found that the appearance of the spectrum was the same in 1975 and 1981, at the spectroscopic resolution from which H-alpha emissions were originally reported on plates taken in 1959. The only well observed line emission is the strongest H-alpha component which does not partake of the large Doppler variations. It is also determined that the 10th-11th magnitude star 1.5 arcmin from SS 433 is a K dwarf listed in the Bruce Proper Motion Survey General Catalogue.

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