/teps-problems

Primary LanguageJuliaMIT LicenseMIT

teps-problems

This repository has examples of fitting exoplanet orbits to astrometry using our new package, DirectDetections. We will be reproducing the results of "An Updated Visual Orbit of the Directly Imaged Exoplanet 51 Eridani b and Prospects for a Dynamical Mass Measurement with Gaia" and going a bit beyond as well.

You can find the paper here: https://iopscience.iop.org/article/10.3847/1538-3881/ab4da4

Files

  • example-1.jl is a template you can use to fit the orbit of the planet. If you get stuck, example-1-worked.jl has the solutions.

  • example-2.jl adds data from the HIPPARCOS-GAIA Catalog of Accelerations by Brandt et al, 2020. This lets us fit the dynamical mass of the planet and improve the orbital solution.

Getting Started

  1. Download Julia 1.7: https://julialang.org/downloads/ If you don't want to install it, you can use it on Compute Canada clusters too.

  2. Look at, edit, and run example-1.jl


Example of Figure 4 reproduced from the paper using this code