6533b824fe1ef96bd127fe3c
RESEARCH PRODUCT
Influence of atomic data on non-LTE chromospheric modelling
R. Freire FerreroS. Alba Villegassubject
PhysicsAtmosphereQuality (physics)Classical mechanicsSimple (abstract algebra)AtomAstrophysics::Solar and Stellar AstrophysicsAstronomy and AstrophysicsAbsorption (electromagnetic radiation)InstrumentationK-lineComputational physicsAtomic datadescription
Abstract The influence of various kinds of atomic parameters on computed Mg II h and k line profiles is studied. For this purpose, we have run a non-LTE code on several versions of a Mg II model atom differing from one another in the quality and source of the atomic data employed, while keeping fixed the underlying atmospheric structure. With this simple setup we show that employing good quality atomic data is a necessary condition to obtain reliable atmosphere diagnostics. This is of interest in many fields of stellar astrophysics, e. g. semi-empirical chromospheric modelling in our case, but also when modelling external velocity fields, circumstellar/interstellar absorption, etc. and so these data deserve special attention.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-08-01 | Astronomical & Astrophysical Transactions |