Sulfide Cloud Model Photometry

Morley et al. 2012

Models that include Na2S, KCl, ZnS, MnS, and Cr clouds. Models have effective temperatures from 400 to 1200 K, gravities from log g(cgs) 4.0 to 5.5. These models are especially appropriate for late T dwarfs cooler than ~900 K (spectral type ~T9). 

We calculate Vega absolute magnitudes for Y, J, H, J, L, M (all MKO), IRAC bands 1-4, and WISE bands 1-4.

Cloud-free Model Photometry

Saumon et al. 2012

Models that do not include cloud opacity. Models have effective temperatures from 400 to 1200 K, gravities from log g(cgs) 4.0 to 5.5. These models are appropriate for mid-late T dwarfs cooler than ~1100-1200 K (spectral type ~T3). Note that L dwarfs and early T dwarfs require models that include iron/silicate clouds (photometry not available here).

We calculate Vega absolute magnitudes for Y, J, H, J, L, M (all MKO), IRAC bands 1-4, and WISE bands 1-4.

Sulfide Cloud Model Spectra

Morley et al. 2012

Please contact me (cmorley at ucolick dot org) for the model spectra used to calculate the above photometry.

Other Useful Resources:

For a database of all brown dwarfs with known parallaxes, see Trent Dupuy’s website:  

For a database of all brown dwarfs, maintained by Chris Gelino, Davy Kirkpatrick, and Adam Burgasser:   

Photometry compilation for T6+ and Y dwarfs is available on Sandy Leggett’s website: