Omicron Andromedae is Quadruple
Abstract
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.
- Publication:
-
Publications of the Astronomical Society of the Pacific
- Pub Date:
- February 1988
- DOI:
- 10.1086/132161
- Bibcode:
- 1988PASP..100..243H
- Keywords:
-
- Binary Stars;
- Star Clusters;
- Stellar Spectra;
- Absorption Spectra;
- Line Spectra;
- Radial Velocity;
- Speckle Interferometry;
- Stellar Parallax;
- Astronomy;
- STARS: INDIVIDUAL;
- STARS: BINARIES