Omicron Andromedae is quadruple

Details Omicron Andromedae is quadruple Omicron Andromedae is quadruple

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100..243h&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, Feb. 1988, p. 243-250. NSERC-supported research.

Astronomy and Astrophysics

Astronomy

16

Binary Stars, Star Clusters, Stellar Spectra, Absorption Spectra, Line Spectra, Radial Velocity, Speckle Interferometry, Stellar Parallax

Scientific paper

The narrow absorption features superimposed on the rotationally broadened Mg II λ4481 line of ο And A are almost certainly from the spectrum of ο And B which is shown to be a 33.01 day double-lined spectroscopic binary. The speckle interferometrically measured separations of Aa and AB indicate that the system contains at least two doubles separated by some 25 AU with the periods of A-a and Aa-B on the order of four and 30 years, respectively, based on a parallax of 0.015±0.008 arc seconds.

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