Dielectronic recombination of Mg II in stellar envelopes

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 hace calculated the emissitivity in the lines of Mg I atoms after the process of electron capture has taken place. In ord...

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Detalles Bibliográficos
Autores principales: Cruzado, Alicia, Di Rocco, Héctor Oscar, Ringuelet, Adela Emilia
Formato: Articulo
Lenguaje:Inglés
Publicado: 1998
Materias:
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/2088
http://iopscience.iop.org/article/10.1086/306004
Aporte de:SEDICI (UNLP) de Universidad Nacional de La Plata Ver origen
Descripción
Sumario: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 hace calculated the emissitivity 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 λ<SUB>1</SUB> ≤ λ ≤ λ<SUB>2</SUB>, where λ<SUB>1</SUB> and λ<SUB>2</SUB> define the wavelegth 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.