Brown dwarf atmospheres

Brown dwarf polar vortex modeling

Multi-epoch atmospheric simulations for substellar objects — from surface flux maps to time-series predictions.

Get started → Try maymo-gui Read the paper

Install

$ pip install maymo

      import maymo as mm

      # initialize a polar vortex model

What maymo does

🌀

Polar vortex geometry

Spherical cap flux maps with configurable vortex latitude, radius, and contrast.

📡

Time-series forward model

Multi-epoch photometric and spectroscopic predictions from rotating surface maps.

🪐

Brown dwarfs & companions

Applicable to isolated brown dwarfs and directly-imaged planetary companions.

maymo-gui

[ interactive preview ]

Run simplified vortex simulations in the browser — no Python required. Adjust vortex parameters and watch the lightcurve update in real time.

Launch maymo-gui →

Team

F. N

Lead · atmospheres

Team member

JS · GUI

Team member

Modeling

Team member

Observations

Cite

Fuda et al. (2025). Polar vortex dynamics in brown dwarf atmospheres from multi-epoch time-series observations. The Astrophysical Journal Letters.

ADS arXiv DOI

@article{fuda_2026,
  author = {Fuda, N. and others},
  title = {Polar vortex dynamics in brown dwarf atmospheres},
  journal = {The Astrophysical Journal Letters},
  year = {2025},
  doi = {10.xxxx/xxxxxx}
}