Photometry of the optical counterpart of the X-ray source 4U1626-67

Details Photometry of the optical counterpart of the X-ray source 4U1626-67 Photometry of the optical counterpart of the X-ray source 4U1626-67

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pasp...91..117c&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 91, Feb.-Mar. 1979, p. 117-119.

Astronomy and Astrophysics

Astronomy

Astronomical Models, Astronomical Photometry, Light Emission, Periodic Variations, X Ray Sources, Reference Stars, Stellar Magnitude, Ubv Spectra

Scientific paper

Results are reported for B and V observations of the faint star with a large UV excess that has been suggested as the optical counterpart of the X-ray source 4U 1626-67. The observations are found not to yield any evidence for a significant periodic variation in either B or V with a period less than 0.3 day or for any erratic variations larger than 0.2 mag. It is concluded that models that predict large short-period variations during an interval of 0.2 day are ruled out, that a short-period binary model is favored, and that the observed UV excess is probably associated with the presence of an accretion disk.

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