  To date, over 500 short-period rocky planets with equilibrium temperatures
above 1500 K have been discovered. Such planets are expected to support magma
oceans, providing a direct interface between the interior and the atmosphere.
This provides a unique opportunity to gain insight into their interior
compositions through atmospheric observations. A key process in doing such work
is the vapor outgassing from the lava surface. LavAtmos is an open-source code
that calculates the equilibrium chemical composition of vapor above a dry melt
for a given composition and temperature. Results show that the produced output
is in good agreement with the partial pressures obtained from experimental
laboratory data as well as with other similar codes from literature. LavAtmos
allows for the modeling of vaporization of a wide range of different mantle
compositions of hot rocky exoplanets. In combination with atmospheric chemistry
codes, this enables the characterization of interior compositions through
atmospheric signatures.
