Dynamical and physical properties of 22 binaries discovered by W. S. Finsen

Abstract

Using recent speckle measurements performed by different observers, in this paper we present revised orbital elements and dynamical masses for the binaries WDS 02396-1152 (FIN 312), 04515-3454 (FIN 320), 06253+0130 (FIN 343), 07003-2207 (FIN 334 Aa,Ab), 08291-4756 (FIN 315 Aa,Ab), 08345-3236 (FIN 335), 09173-6841 (FIN 363 AB), 09442-2746 (FIN 326), 12064-6543 (FIN 367 Aa,Ab), 12446-5717 (FIN 65 AB), 13117-2633 (FIN 305), 13320-6519 (FIN 369), 14373-4608 (FIN 318 Aa,Ab), 16057-0617 (FIN 384 Aa,Ab), 16115+0943 (FIN 354), 17221-7007 (FIN 373), 17542+1108 (FIN 381), 19035-6845 (FIN 357), 21044-1951 (FIN 328), 21158-5316 (FIN 329), 21477-3054 (FIN 330 AB) and 21579-5500 (FIN 307) discovered by W. S. Finsen using his eyepiece interferometer. A brief historical comment on Finsen's work on binaries is included. The orbital and physical properties of these stars are discussed with detail. In addition to this, quantitative results about a likely overestimation of Finsen's angular separations are provided. Moreover, the evaluation as well as the statistical significance determination of a suspected underestimation of the Hipparcos trigonometrical parallaxes at large distances is also accomplished.