The Sirius System and its Astrophysical Puzzles: Hubble Space Telescope and Ground-Based Astrometry

Howard E. Bond, Gail H. Schaefer, Ronald L. Gilliland +11

Sirius, the seventh-nearest stellar system, is a visual binary containing the metallic-line A1 V star Sirius A, brightest star in the sky, orbited in a 50.13-year period by Sirius…