Towards a New Prescription for the Tidal Capture of Planets, Brown   Dwarfs and Stellar Companions
  We study the evolution of the orbit of a planetary companion as the primary star evolves during the red giant branch phase. Our aim is to determine a prescription for the capture radius and capture timescales for companions in a wide range of masses, from planet to star, including the effect of a non constant f parameter. Our initial results reproduce past findings. According to our study the mass-loss during the red giant branch does not significantly affect the semi major axis of the planet and for a 1.5 M star the capture radius is approximately 300 R or 1.4 AU. 
N. Madappatt Alikutty, O. De Marco, J. Nordhaus, M. Wardle
astro-ph.EP astro-ph.SR