Bibcode
Asensio Ramos, A.; Trujillo Bueno, J.
Referencia bibliográfica
Stellar Atmosphere Modeling, ASP Conference Proceedings, Vol. 288. Abstracts from a conference held 8-12 April 2002 in Tuebingen, Germany. Editors: Ivan Hubeny, Dimitri Mihalas, and Klaus Werner. San Francisco: Astronomical Society of the Pacific, ISBN: 1-58381-131-1, 2003, p.335
Advertised on:
1
2003
Número de citas
1
Número de citas referidas
1
Descripción
Molecular lines are generally very good tracers of the physical
conditions in cold regions of the Universe (e.g. molecular clouds, cool
stars, etc.), but molecular species are also found in not so cold
environments (e.g. the magnetized solar atmosphere). For a reliable
interpretation of spectroscopic and spectropolarimetric observations of
molecular lines it is often necessary to carry out detailed radiative
transfer simulations in molecular lines, both in LTE and NLTE. Here we
present a multilevel radiative transfer code for the synthesis of
molecular lines in stellar atmospheres, showing some illustrations of
calculations in different astrophysical contexts and considering
molecules like H2O, CO and OH. We will discuss our
implementation of highly convergent iterative methods and formal solvers
with especial emphasis on spherical geometry. We will also present a
chemical evolution code which is currently allowing us to check the
approximation of instantaneous chemical equilibrium in the calculation
of the abundances of a variety of molecular species.