Dark Companions of Stars

I: Our Cosmic Neighborhood.- 1 / The ‘Fixed’ Stars and the ‘Wandering’ Planets.- A. Celestial Sphere. Constellations.- B. Copernican Revolution.- C. Kepler’s Laws. Newton’s Law of Gravitation.- 2 / Stellar Motions.- A. Proper Motions.- B. Space Motions.- C. Law of Inertia.- D. Systematic Motions.- 3 / Stellar Distances.- A. Heliocentric Parallax. Stellar Aberration.- B. Measurement of Stellar Parallax.- C. Current Work.- D. Parallax Factors, Heliocentric and Barycentric.- 4 / Stellar Parameters.- A. Masses, Double Stars.- B. Luminosities.- C. Spectra and Spectral Types.- D. Surface Temperatures and Colors.- E. Diameters.- 5 / The Nearby Stars.- A. The Brightest Stars.- B. The Nearest Stars. Spacing of Stars.- C. Main Sequence; Red and White Dwarfs.- D. Mass-Luminosity Relation. Mass Density.- 6 / The Lower End of the Main Sequence.- A. The Intrinsically Faintest Known Visible Stars.- B. Red and Dark Dwarfs.- C. Statistical Studies of Dark Dwarfs.- D. Visible and Invisible Dark Dwarfs.- E. General Remarks.- 7 / Our Solar System.- A. Introduction.- B. Geometric and Kinematic Properties of Planetary Motions.- C. Physical and Chemical Properties of Planetary System.- D. Comets and Extent of Solar System.- 8 / Origins.- A. Galaxies; Solar System.- B. Stars, Double and Multiple Stars.- C. Origin and Evolution of Solar System; Disk.- D. Binary and Multiple Systems.- E. Stars and Planets.- II: Unseen Stars and Planets.- 9 / Historical I.- A. The Stars Sirius and Procyon.- B. The Planets Neptune and Pluto.- 10 / Historical II.- A. ‘The Predictions and Discovery of the Ninth Planet, and the Extensive Planet Search’.- B. ‘Planet X?’.- 11 / Perturbations.- A. General.- B. Spectroscopic, Photometric, and Eclipsing Companions.- C. Photographic Astrometry of Perturbations.- D. Mass Function. Orbital Constant. Dynamical Interpretation.- 12 / Perturbations. Early mostly Photographic Studies.- A. General.- B. Early Results.- 13 / Perturbations. Current Photographic Studies.- A. General.- B. Results.- C. Review.- 14 / Two Cases of Serendipity: Ross 614 and VW Cephei.- A. Ross 614, A case of Quadruple Serendipity.- B. The Discovery of VW Cephei C — Serendipity Again.- 15 / Astrometric Study of Barnard’s Star.- A. Proper Motion, Parallax and Acceleration.- B. Astrometric Profile of Sproul Refractor.- C. Perturbation of Barnard’s Star.- D. Dynamical Interpretation, Planetary System of Barnard’s Star.- 16 / Epilogue.- A. The Cosmic Experiment.- B. Space and Time.- C. Astronomy and Astronomers.