tiltr

TEPCat Obliquity Plotter

Installation

pip install tiltr

Usage

Plots the sky-projected spin-orbit angle and the true spin-orbit angle of an exoplanet. Data taken from TEPCat. Currently, the package supports plotting with respect to the effective temperature (K), the semi-major axis (AU), and the period of the planet (days). The plot for the effective temperature takes an additional, optional argument kraft to plot the Kraft Break.

from tiltr import TEPCatPlotter

tp = TEPCatPlotter() 

# projected spin-orbit angle
tp.plot_lambda_vs_teff(highlight="TOI-1842", save_path='lambda_vs_teff.pdf', show=True, kraft=6050)  
tp.plot_lambda_vs_a(log_scale=True, highlight="TOI-1842", save_path='lambda_vs_a.png', show=True)
tp.plot_lambda_vs_period(highlight="TOI-1842", save_path='lambda_vs_period.svg', show=True)         

# true spin-orbit angle
tp.plot_psi_vs_teff(highlight="TOI-1842", save_path='psi_vs_teff.pdf', kraft=6050, show=True)
tp.plot_psi_vs_a(log_scale=True, highlight="TOI-1842", save_path='psi_vs_a.png', show=True)
tp.plot_psi_vs_period(highlight="TOI-1842", save_path='psi_vs_period.jpg', show=True)

# all combined
tp.plot_grid(log_scale_a=True, highlight="TOI-1842", save_path="obliquity_grid.pdf")

Reference

• Southworth, J. (2011). Homogeneous studies of transiting extrasolar planets–IV. Thirty systems with space-based light curves. Monthly Notices of the Royal Astronomical Society, 417(3), 2166-2196.