Photoelectric photometry of 4 U 2129 plus 47

Details Photoelectric photometry of 4 U 2129 plus 47 Photoelectric photometry of 4 U 2129 plus 47

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...110...23c&link_type=abstract

Astronomy and Astrophysics, vol. 110, no. 1, June 1982, p. 23, 24.

Astronomy and Astrophysics

Astrophysics

1

Binary Stars, Electrophotometry, Stellar Color, Ubv Spectra, Variable Stars, X Ray Sources, Light Curve, Long Term Effects, Stellar Spectra

Scientific paper

Results from a run of observations of the weak X-ray source 4 U 2129plus47, made in July 1980, are presented. The UBV photoelectric photometry confirms the periodicity of the source and shows the details of color variations due to variable heating of the outer layers of the optical star by the X-ray emitting object. The results suggest variability in the B magnitude at maximum and minimum light, perhaps related to the night-to-night variability at this magnitude at maximum light.

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