HD 221264 - A solar-type spectroscopic quadruple system

Details HD 221264 - A solar-type spectroscopic quadruple system HD 221264 - A solar-type spectroscopic quadruple system

Jan 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990aj.....99..373w&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 99, Jan. 1990, p. 373-378. Research supported by Vanderbilt University.

Other

3

Binary Stars, F Stars, Late Stars, Solar Spectra, Stellar Magnitude, Astronomical Photometry, Eccentric Orbits, Orbital Elements, Stellar Orbits

Scientific paper

The visual binary HD 221264 = ADS 16800 AB is shown to be a quadruple star with similar late F type components. The visual magnitudes of components Aa, Ab, Ba, and Bb are 8.46 + or - 0.04, 9.13 + or - 0.04, 8.71 + or - 0.06, and 8.94 + or - 0.06 mag, respectively. The spectral types of the four components are F6 V, F9 V, F7 V, and F8 V, respectively. The period of the A components is 1.918058 + or - 0.000006 days, while that of the B components is 13.0425 + or - 0.0002. The A system has an orbital eccentricity of 0.043 + or - 0.008 and an orbital inclination of 37 + or - 2 deg. The B system has an eccentricity of 0.326 + or - 0.016 and an inclination of 42 + or - 3 deg. Thus, they may be coplanar with each other and also with the visual orbit.

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