... 61 Cyg relative to the surrounding stars yields their mass ratio and the masses of ... Keywords: stars: double: masses - individual: 61 Cygni 1. ... 61 Cyg relative to the background stars, determination of the mass ratio Images of ...
... The orbits and masses for six stars with orbital periods from 500 to 20 000 years have been reliably determined. ... For five stars with periods from 2000 to 100z,000 years, we obtained probable orbits and mass estimates. ...
... the orbit of the star S2 around the Galactic center, and thereby the mass of the ... mass can be derived from observational data on the orbital motions of nearby stars ...
... These are the stars which have pointing out a presence of dust disks or invisible satellites of small masses, and also possible existence of planet-like companions, including the Earth-type planets. ...
... Pulkovo program of investigation of stars with large proper motions: trigonometric ... Ю.Н, Грошева Е.А. Estimation of Central Bodies Masses of Selected Globuar Clusters ... Physical properties of components in multiple stars and their dynamic. ...