Volume 556, August 2013
|Number of page(s)||4|
|Section||Stellar structure and evolution|
|Published online||09 August 2013|
Astrometric mass ratios for three spectroscopic binaries
Observatoire de Genève, Université de Genève,
51 chemin Des Maillettes,
2 Center of Excellence in Information Systems, Tennessee State University, 3500 John A. Merritt Boulevard, Box 9501, Nashville, TN 37209, USA
Received: 13 June 2013
Accepted: 10 July 2013
The orbits of five single-lined spectroscopic binaries have recently been determined. We now use astrometric measurements that were collected with the Hipparcos satellite to constrain the systems’ mass ratios and secondary masses. The barycentric astrometric orbits of three binary systems, HD 140667, HD 158222, and HD 217924, are fully determined and precise estimates of their mass ratios are obtained. Follow-up of these systems with infrared spectroscopy could yield model-independent dynamical masses for all components.
Key words: binaries: spectroscopic / stars: low-mass / astrometry / stars: individual: HD 140667 / stars: individual: HD 158222 / stars: individual: HD 217924
© ESO, 2013
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.