Observatorio de I+D+i UPM

Descripción
Emission lines of Mg IV have been detected in the Far Ultraviolet Spectroscopic Explorer (FUSE) spectrum of LS V +46º21 star and in the Space Telescope Imaging Spectrograph (STIS) spectrum of BD +28º4211 star. This fact justifies our interest in providing spectroscopic parameters of Mg IV. Stark broadening parameters for 169 spectral lines of Mg IV have been calculated by using the Griem semi-empirical approach. The matrix elements used in these calculations has been determined from 13 configurations of Mg IV: 2s12p6, 2s22p4ns (n=3-5), 2s22p4nd (n=3-5) and 2s22p45g for even parity and 2s22p5, 2s22p4np (n=3, 4) and 2s22p4nf (n=4, 5) for odd parity. Our calculations were made by using the Cowan code. Data are presented for an electron density of 1017 cm-3 and temperatures T=1.0-10.0 (104 K). Also we present calculated values of transition probabilities for 30 spectral lines and radiative lifetimes corresponding to its upper levels. These values were analyzed using the data found in the literature. Theoretical trends of the Stark broadening parameters versus the temperature for several lines of astrophysical interest are presented.
Internacional	Si
JCR del ISI	Si
Título de la revista	Monthly Notices of the Royal Astronomical. Society
ISSN	0035-8711
Factor de impacto JCR
Información de impacto
Volumen	462
DOI	10.1093/mnras/stw1955
Número de revista
Desde la página	4220
Hasta la página	4226
Mes	AGOSTO
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Esta actividad pertenece a memorias de investigación

• Autor: Maria Isabel de Andres Garcia (UPM)
• Autor: You Don Chaoyu . (UPM)
• Autor: Aurelia Alonso Medina (UPM)
• Autor: Cristobal Colon Hernandez (UPM)

• Creador: Grupo de Investigación: Análisis y Caracterización Óptica de Materiales
• Departamento: Ingeniería Eléctrica, Electrónica Automática y Física Aplicada