Other
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....107..306h&link_type=abstract
The Astronomical Journal, vol. 107, no. 1, p. 306-332
Other
137
Binary Stars, Coplanarity, Planetary Evolution, Planetary Orbits, Planetary Systems, Equators, Line Spectra, Orbital Velocity, Planetary Rotation, Star Formation, Planets, Extrasolar Planets, Planetary Systems, Binary Systems, Origin, Orbit, Inclination, Parameters, Theoretical Studies, Stability, Period, Calculations, Rotation, Distance
Scientific paper
The equatorial inclinations of solar-type stars within visual binary systems are computed by combining v sin i measurements with rotational period information, or with expected rotational velocities based upon the age of the star in question. These inclinations are then compared with the orbital inclinations of the systems to test the alignment between the equatorial and orbital planes, and how the tendency for or against coplanarity varies as a function of parameters such as spectral type, separation, eccentricity, etc. The results are extended to planetary systems in order to determine the appropriateness of basing planetary search strategies upon a parent star's equatorial inclination, and to address issues in planetary system formation and evolution, including the stability of planetary orbits within binary systems. During the course of this project new or improved v sin i measurements are made for over 30 solar-type stars within binary systems, and (for the purposes of the study) tentative orbits are computed for thirteen long-period systems. The results suggest that approximate coplanarity between the equatorial and orbital planes exists solar-type binary systems with separations less than 30-40 AU. The coplanarity tendency, as well as this 'critical separation,' is not significantly affected by most of the other parameters studied. The one significant exception occurs with hierarchical multiple systems, where noncoplanarity may exist at relatively small separations. If it is assumed that planetary distances in our solar system are typical, the results suggest there is no reason to expect planets to orbit in planes significantly different from that of the parent star's equator, in turn suggesting that planetary formation models and search strategies dependent upon this assumption are valid from this standpoint. The results also suggest that noncoplanarity between the components of a binary system is not a significant issue in addressing the stability of planetary orbits within the system.
No associations
LandOfFree
Orbital coplanarity in solar-type binary systems: Implications for planetary system formation and detection does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Orbital coplanarity in solar-type binary systems: Implications for planetary system formation and detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Orbital coplanarity in solar-type binary systems: Implications for planetary system formation and detection will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-865197