HII 2407: A Low-Mass Eclipsing Binary Revealed by K2 Observations of the Pleiades
Abstract
The star HII 2407 is a member of the relatively young Pleiades star cluster and was previously discovered to be a single-lined spectroscopic binary. It is newly identified here within / photometric time series data as an eclipsing binary system. Mutual fitting of the radial velocity and photometric data leads to an orbital solution and constraints on fundamental stellar parameters. While the primary has arrived on the main sequence, the secondary is still pre-main-sequence and we compare our results for the and values with stellar evolutionary models. We also demonstrate that the system is likely to be tidally synchronized. Follow-up infrared spectroscopy is likely to reveal the lines of the secondary, allowing for dynamically measured masses and elevating the system to benchmark eclipsing binary status.
Keywords
Cite
@article{arxiv.1510.06399,
title = {HII 2407: A Low-Mass Eclipsing Binary Revealed by K2 Observations of the Pleiades},
author = {Trevor J. David and John Stauffer and Lynne A. Hillenbrand and Ann Marie Cody and Kyle Conroy and Keivan G. Stassun and Benjamin Pope and Suzanne Aigrain and Ed Gillen and Andrew Collier Cameron and David Barrado and L. M. Rebull and Howard Isaacson and Geoffrey W. Marcy and Celia Zhang and Reed L. Riddle and Carl Ziegler and Nicholas M. Law and Christoph Baranec},
journal= {arXiv preprint arXiv:1510.06399},
year = {2015}
}
Comments
9 pages, 4 figures, accepted for publication in ApJ