Orbital Motion in Pre-Main Sequence Binaries
arXiv:1405.0225 · doi:10.1088/0004-6256/147/6/157
Abstract
We present results from our ongoing program to map the visual orbits of pre-main sequence binaries in the Taurus star forming region using adaptive optics imaging at the Keck Observatory. We combine our results with measurements reported in the literature to analyze the orbital motion for each binary. We present preliminary orbits for DF Tau, T Tau S, ZZ Tau, and the Pleiades binary HBC 351. Seven additional binaries show curvature in their relative motion. Currently, we can place lower limits on the orbital periods for these systems; full solutions will be possible with more orbital coverage. Five other binaries show motion that is indistinguishable from linear motion. We suspect that these systems are bound and might show curvature with additional measurements in the future. The observations reported herein lay critical groundwork toward the goal of measuring precise masses for low-mass pre-main sequence stars.
60 pages, 6 tables, 23 figures; Accepted for publication in AJ
References in corpus (11)
- The Dartmouth Stellar Evolution Database
- The Stellar Populations of Praesepe and Coma Berenices
- VLBA determination of the distance to nearby star-forming regions I. The distance to T Tauri with 0.4% accuracy
- A VLT/NACO Survey for Triple and Quadruple Systems among Visual Pre-Main Sequence Binaries
- A kinematic study of the Taurus-Auriga T association
- Orbits and Masses in the T Tauri System
- Dynamical Mass Estimates for Incomplete Orbits: Young Multiple Stars in Taurus and Ophiuchus
- Dynamical Masses for Pre-Main Sequence Stars: A Preliminary Physical Orbit for V773 Tau A
- An assessment of Li abundances in weak-lined and classical T Tauri stars of the Taurus-Auriga association
- Accurate stellar masses in the multiple system T Tau
- Preliminary Orbit of the Young Binary Haro 1-14c