Physical Properties of the Eclipsing Binary KIC 9851944: Physical Properties

25 May 2024

This paper is available on arxiv under CC 4.0 license.


(1) Z. Jennings, Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK (E-mail:;

(2) J. Southworth, Astrophysics Group, Keele University, Staffordshire, ST5 5BG, UK;

(3) K. Pavlovski, Department of Physics, Faculty of Science, University of Zagreb, 10000 Zagreb, Croatia;

(4) T. Van Reeth, Institute of Astronomy, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium.


We determined the physical properties of KIC 9851944 from the spectroscopic and photometric results obtained above. For this we used the JKTABSDIM code (Southworth et al. 2005), modified to use the IAU system of nominal solar values (Prša et al. 2016) plus the NIST 2018 values for the Newtonian gravitational constant and the Stefan-Boltzmann constant. Errorbars were propagated via a perturbation analysis. The results are given in Table. 7.

Table 5. Summary of the parameters for the WD2004 solutions of the light curves of the systems. Detailed descriptions of the control parameters can be found in the WD code user guide (Wilson & Van Hamme 2004). A and B refer to the primary and secondary stars, respectively. Uncertainties are only quoted when they have been robustly assessed by comparison of a full set of alternative solutions.

Table 6. Physical properties measured for the four systems analysed in this work. The units labelled with a ‘N’ are given in terms of the nominal solar quantities defined in IAU 2015 Resolution B3 (Prša et al. 2016).