Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980natur.286..689g&link_type=abstract
Nature, vol. 286, Aug. 14, 1980, p. 689-691. Research supported by the Science Research Council.
Astronomy and Astrophysics
Astronomy
9
Emission Spectra, Infrared Astronomy, Variable Stars, X Ray Sources, Astronomical Photometry, Infrared Spectra, Light (Visible Radiation), Light Curve, Radial Velocity, Velocity Measurement
Scientific paper
Results of a one-year monitoring program of SS433 at IR and visual wavelengths are reported. The most striking feature of these observations is the near constancy of the IR colors while the source's flux varies over a range of about 1.2 mag. There is no evidence for the 13.1-day period first reported in radial-velocity measurements by Crampton et al. (1980). However, it seems possible that an 11.8-day period is present.
Bailey Jon A.
Cunningham Charles E.
Giles Barry A.
Hough James H.
Jameson Richard F.
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