A Systematic Study of Departures from Chemical Equilibrium in the Atmospheres of Substellar Mass Objects
Taken from Hubeny and Burrows (2007)

Description: The tar files below are a collection of non-equilibrium L, T, and "Y" dwarf spectral models described in the paper submitted to the Astrophysical Journal entitled "A Systematic Study of Departures from Chemical Equilibrium in the Atmospheres of Substellar Mass Objects" by Hubeny and Burrows (2007). The models are cloud-free or cloudy, have log base ten (gravities in cgs) of 4.5, 5.0, and 5.5, and have effective temperatures that range from 700 K to 1800 K. All the models are for solar metallicity. A variety of mixing parameters in the radiative zone are used and compared and the focus is on the effects of non-equilibrium CO/CH4 and NH3/N2 chemistry. Should you employ these theoretical models in a talk, publication, proposal, or any document, we would appreciate it if you would refer to this paper. Feel free to contact Adam Burrows (burrows@astro.princeton.edu) or Ivan Hubeny (hubeny@as.arizona.edu) if you have questions or requests.


Non-equilibrium Brown Dwarf Model Spectra:

The tarball below contains all the models currently available, both clear and cloudy, equilibrium and non-equilibrium. When the tarball is unwrapped, the non-equilibrium clear models are put in the directory clr_neq, the non-equilibrium cloudy models (with rainout, etc.) are put in the directory c100_neq (where a modal particle size of 100 microns has been assumed), and the equilibrium models are put in the directory lce. The format for the file names and in the files themselves is explained in legend.txt in this directory.