منابع مشابه
Relative orientation of orbits in triple stars
Statistical analysis of the relative alignment of inner and outer orbits in triple systems resulting from a dynamical decay of small-N clusters (N ≤ 10) is presented and compared to the statistics of real multiple stars. The distribution of the relative angle Φ between the angular momentum vectors of inner and outer orbits in triple stars formed by decay is shown to depend on the initial cluste...
متن کاملGalactic orbits of stars with planets ⋆
We have reconstructed the galactic orbits of the parent stars of exo-planets. For comparison, we have recalculated the galactic orbits of stars from the Edvardsson et al. (1993) catalog. A comparison between the two samples indicates that stars with planets are not kinematically peculiar. At each perigalactic distance stars with planets have a metallicity systematically larger than the average ...
متن کاملBound near-equatorial orbits around neutron stars
Recent discovery of kilohertz quasi-periodic brightness oscillations of low mass X-ray binaries (LMXBs) has attracted attention to highly relativistic periodic motion near accreting neutron stars. Most models proposed so far involve (almost) inertial motion in the vicinity of the stars’ innermost stable circular orbits. In the present paper we study general-relativistic circular and eccentric o...
متن کاملLyrae stars : Kinematics , orbits and z - distribution
RR Lyrae stars in the Milky Way are good tracers to study the kinematic behaviour and spatial distribution of older stellar populations. A recently established well documented sample of 217 RR Lyr stars with V < 12.5 mag, for which accurate distances and radial velocities as well as proper motions from the Hipparcos and Tycho-2 catalogues are available, has been used to reinvestigate these stru...
متن کاملSpectropolarimetric orbits of symbiotic stars: five S-type systems
We present multi-epoch, high signal-to-noise spectropolarimetry of the Raman-scattered emission lines of five S-type symbiotic binaries: CD−43◦14304, Hen 1242, M1-21, SY Mus, and V455 Sco. The Raman-line polarizations and magnitudes are used to estimate orbital parameters for these systems. Two of the five systems (CD−43◦14304 and SY Mus) have published radial-velocity orbits, which agree with ...
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ژورنال
عنوان ژورنال: Serbian Astronomical Journal
سال: 2000
ISSN: 1450-698X,1820-9289
DOI: 10.2298/saj0062109o