2006A&A...452.1083F


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.24CET02:17:25

2006A&A...452.1083F - Astronomy and Astrophysics, volume 452, 1083-1088 (2006/6-4)

Influence of NLTE calculations on the hydrogen lines in chromospheric models.

FUHRMEISTER B., SHORT C.I. and HAUSCHILDT P.H.

Abstract (from CDS):

We present extensive NLTE calculations for a semi-empirical solar 1D chromosphere model based on the VAL C model. We report on a significant influence of nitrogen, oxygen, and sulfur on the emergent hydrogen emission with respect to LTE vs. NLTE calculations for these elements. Moreover, we present a model spectrum with 20 light and iron group elements computed in NLTE. We compare this to an observed solar spectrum and to a photospheric model spectrum. We find that the agreement for this model with the data is less good than the original VAL C model especially in the UV. This may imply the need of changes in the chromospheric temperature structure or may point to general problems of static 1D chromospheric models.

Abstract Copyright:

Journal keyword(s): line: formation - Sun: chromosphere

Simbad objects: 0

goto Full paper

goto View the reference in ADS

Number of rows : 0

To bookmark this query, right click on this link: simbad:objects in 2006A&A...452.1083F and select 'bookmark this link' or equivalent in the popup menu


2021.01.24-02:17:25

© Université de Strasbourg/CNRS

    • Contact