The SNO5 "Plateforme MIS & Jets" is a set of services aimed at providing the theoretical models required for the preparation and interpretation of observations from major instruments of the Galactic and extragalactic gas (Herschel, ALMA, NOEMA, JWST, …).
The services rely on reference codes that have been developed and continuously improved for more than a decade (the Meudon PDR code,the Paris–Durham shock code) by teams at the Observatoire de Paris. These codes treat, in a coupled way, non-LTE radiative transfer, the chemistry of hundreds of species in the gas and on grains, as well as the heating and cooling processes of the interstellar gas.
The service provides ISMDB, a database of thousands of precomputed models covering different interstellar environments and including advanced exploration tools to simplify the interpretation of observations and the preparation of observing campaigns. An important development axis of the service is to set up innovative solutions to rapidly interpret massive datasets, which astrophysicists increasingly have to deal with, through Machine Learning and Bayesian techniques. The services provide access to a very large number of physical quantities (intensities of atomic and molecular lines, temperature profiles of gas and grains, abundance profiles of chemical species, theoretical spectra, …) for many types of interstellar environments.
These services and data can be used to prepare or interpret observations from major instruments across all wavelength domains, from the UV to the radio. This SNO largely supports the development of IVOA standards for the distribution of theoretical data in astrophysics.
