# Modeling Kepler Eclipsing Binaries: Homogeneous Inference of Orbital & Stellar Properties

## TL;DR

This paper introduces a new photometric modeling approach to infer stellar and orbital properties of Kepler eclipsing binaries, creating the largest homogeneous catalog and validating its accuracy against radial velocity data.

## Contribution

The study develops a novel modeling code that estimates binary star parameters from photometry alone, enabling large-scale analysis without radial velocity measurements.

## Key findings

- Generated the largest homogeneous catalog of 728 binary systems.
- Validated the inferred stellar masses against published radial velocity data.
- Identified 35 systems with eclipse timing variations indicating potential tertiary companions.

## Abstract

We report on the properties of eclipsing binaries from the Kepler mission with a newly developed photometric modeling code, which uses the light curve, spectral energy distribution of each binary, and stellar evolution models to infer stellar masses without the need for radial velocity measurements. We present solutions and posteriors to orbital and stellar parameters for 728 systems, forming the largest homogeneous catalogue of full Kepler binary parameter estimates to date. Using comparisons to published radial velocity measurements, we demonstrate that the inferred properties (e.g., masses) are reliable for well-detached main-sequence binaries, which make up the majority of our sample. The fidelity of our inferred parameters degrades for a subset of systems not well described by input isochrones, such as short-period binaries that have undergone interactions, or binaries with post-main sequence components. Additionally, we identify 35 new systems which show evidence of eclipse timing variations, perhaps from apsidal motion due to binary tides or tertiary companions. We plan to subsequently use these models to search for and constrain the presence of circumbinary planets in Kepler eclipsing binary systems.