Binara

Code to fit the lightcurves of close main-sequence binary systems. It includes an analytical model for the lightcurves based on Engel 2020, and performs the fitting using a MCMC method.

Lightcurve Model

The lightcurve model includes flux contributions from Doppler beaming, reflection effects, ellipsoidal variations and eclipses. The changes in eclipse depths from limb darkening effects are also modeled. For a more detailed version of the

MCMC Fitting

Table of Contents

• Installation
• Usage
• License
• Contact

Installation

Downloading the code

The code is available on GitHub. Simply run:

# Clone the repository
git clone https://github.com/golmschenk/binara.git

cd binara

Building with CMake

Building with CMake is not necessary since the source code is contained in only three C files. However, it is extremely convenient. In your terminal, simply run:

# Install dependencies
cmake -B build

cd build

# Build the project
make -j

Note: Building with OpenMP support on some of the Apple machines with M1 or M2 chips may require you to specify a different compiler than AppleClang. E.g., if you have downloaded OpenMP and gcc via brew, you may instead want to do:

cmake -B build -D CMAKE_CXX_COMPILER=/opt/homebrew/bin/g++-14 \
-D CMAKE_C_COMPILER=/opt/homebrew/bin/gcc-14

Building Directly

The executable can also be compiled and linked directly.

mkdir build

gcc src/mcmc_wrapper.c src/likelihood.c src/util.c -O3 -fopenmp -o build/binara

Usage

Examples of how to use the project.

# Run the project

License

This project is licensed under the Apache 2.0 License - see the LICENSE file for details.

Contact

Siddhant Solanki - siddhant@umd.edu