Dielectronic Recombination of Mg II in Stellar Envelopes

Details Dielectronic Recombination of Mg II in Stellar Envelopes Dielectronic Recombination of Mg II in Stellar Envelopes

Aug 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...503..902c&link_type=abstract

Astrophysical Journal v.503, p.902

Astronomy and Astrophysics

Astronomy

3

Atomic Processes, Infrared: Stars, Stars: Emission-Line, Be

Scientific paper

The aim of the present paper is to discuss the significance, in the infrared continuum of Be stars, of the dielectronic recombination (DR) of Mg II atoms. To accomplish this, we have calculated the emissivity in the lines of Mg I atoms after the process of electron capture has taken place. In order to estimate its influence in the photospheric flux, we have considered the total energy emitted in all lines with lambda 1 <= lambda <= lambda 2, where lambda 1 and lambda 2 define the wavelength ranges of the Johnson system filters. We conclude that the DR of Mg II atoms does actually contribute significantly to the infrared excess observed in Be stars.

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