U-B-V photometry of the spectroscopic-visual triple HD 165590

Details U-B-V photometry of the spectroscopic-visual triple HD 165590 U-B-V photometry of the spectroscopic-visual triple HD 165590

May 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.155...27b&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 155, no. 1, May 1989, p. 27-38.

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Astronomical Photometry, Eclipsing Binary Stars, Light Curve, Triple Stars, Ubv Spectra, Computational Astrophysics, Dwarf Stars, Ephemerides, Orbital Mechanics, Starspots, Stellar Flares

Scientific paper

Results of photoelectric UBV photometry from Lines (1983) and V photometry from Scarfe (1977), together with observation results from the Automatic Photoelectric Telescope (APT) on the triple HD 165590 visual binary, all obtained between 1977 and 1986, are examined, using a FORTRAN program to analyze the noneclipse light variations. A new linear ephemeris is obtained, which shows that the orbital period of Aa = Ab is constant, within the uncertainties of the available times of mid-primary eclipse and times of conjunction derived from the analysis of the ellipticity effect.

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