Dielectronic Recombination of Mgiiin Stellar Envelopes | Zendy

Alicia Cruzado | Zendy; Héctor O. Di Rocco | Zendy; A. E. Ringuelet | Zendy

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Dielectronic Recombination of Mgiiin Stellar Envelopes

Author(s) -

Alicia Cruzado,

Héctor O. Di Rocco,

A. E. Ringuelet

Publication year - 1998

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/306004

Subject(s) - physics , stars , astrophysics , emissivity , recombination , infrared , flux (metallurgy) , atomic physics , wavelength , astronomy , optics , biochemistry , chemistry , materials science , metallurgy , gene

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 λ₁ ≤ λ ≤ λ₂, where λ₁ and λ₂ 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

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