Aviv Ofir, Davide Gandolfi, Lars Buchhave, Claud H. S. Lacy, Artie P. Hatzes, Malcolm Fridlund
KIC 1571511 is a 14d eclipsing binary (EB) in the Kepler dataset. The
secondary of this EB is a very low mass star with a mass of 0.14136 +/- 0.00036
M_sun and a radius of 0.17831 +0.00051/-0.00062 R_sun (statistical errors
only). The overall system parameters make KIC 1571511B an ideal "benchmark
object": among the smallest, lightest and best-described stars known, smaller
even than some known exoplanet. Currently available photometry encompasses only
a small part of the total: future Kepler data releases promise to constrain
many of the properties of KIC 1571511B to unprecedented level. However, as in
many spectroscopic single-lined systems, the current error budget is dominated
by the modeling errors of the primary and not by the above statistical errors.
We conclude that detecting the RV signal of the secondary component is crucial
to achieving the full potential of this possible benchmark object for the study
of low mass stars.
View original:
http://arxiv.org/abs/1111.2578
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