Fluorescent iron lines in T Tauri stars

Details Fluorescent iron lines in T Tauri stars Fluorescent iron lines in T Tauri stars

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991azh....68..538b&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 68, May-June 1991, p. 538-547. In Russian.

Astronomy and Astrophysics

Astronomy

2

Local Thermodynamic Equilibrium, Metallicity, Nonequilibrium Thermodynamics, Stellar Models, Stellar Spectrophotometry, T Tauri Stars, Atomic Structure, Chromosphere, Fluorescence, Iron, Line Spectra

Scientific paper

This paper presents non-LTE calculations of Fe I lines for semiempirical chromospheric models of T Tauri stars. It is shown that agreement with observations can be achieved if an additional ionizing-radiation field or an abundance deficiency of iron is included. The former condition was found to be the more probable. Observations indicate a greater fluorescent strengthening of 4063 and 4132 Fe I than is achieved in the chromospheric model. Several areas in which these models can be improved are discussed.

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