Physics
Scientific paper
Jun 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981natur.291..392c&link_type=abstract
Nature, Volume 291, Issue 5814, pp. 392-394 (1981).
Physics
12
Scientific paper
SS433 shows X-ray, optical and radio variability and evidence of material moving at one-quarter the speed of light1. We report here the presence of the 165.5-day spectroscopic period in our extensive JHKL (1.2-3.4 µm) photometry. This indicates that the jets, rather than a highly reddened O star, are a major source of the IR radiation. We also show that the (J-H) colour index becomes redder as SS433 brightens but find no evidence for the 11.8-day period reported by Giles et al.2.
Carter B. S.
Catchpole Robin M.
Glass S000. I.
Roberts Gareth
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