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Andrés García, María Isabel de, You, Chaoyu, Alonso Medina, Aurelia and Colón Hernández, Cristóbal (2016). Theoretical study of the Stark broadening for Mg IV spectral lines of astrophysical interest. "Monthly Notices of the Royal Astronomical Society", v. 462 (n. 4); pp. 4220-4226. ISSN 0035-8711. https://doi.org/10.1093/mnras/stw1955.
Title: | Theoretical study of the Stark broadening for Mg IV spectral lines of astrophysical interest |
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Author/s: |
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Item Type: | Article |
Título de Revista/Publicación: | Monthly Notices of the Royal Astronomical Society |
Date: | November 2016 |
ISSN: | 0035-8711 |
Volume: | 462 |
Subjects: | |
Freetext Keywords: | Atomic data; Atomic processes |
Faculty: | E.T.S.I. Diseño Industrial (UPM) |
Department: | Ingeniería Eléctrica, Electrónica Automática y Física Aplicada |
Creative Commons Licenses: | Recognition - No derivative works - Non commercial |
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Emission lines of Mg IV have been detected in the Far Ultraviolet Spectroscopic Explorer (FUSE) spectrum of LS V +46°21 star and in the Space Telescope Imaging Spectrograph (STIS) spectrum of BD +28°4211 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 cmˉ³ 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 analysed 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.
Item ID: | 56602 |
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DC Identifier: | https://oa.upm.es/56602/ |
OAI Identifier: | oai:oa.upm.es:56602 |
DOI: | 10.1093/mnras/stw1955 |
Official URL: | https://academic.oup.com/mnras/article-abstract/46... |
Deposited by: | Memoria Investigacion |
Deposited on: | 01 Oct 2019 07:47 |
Last Modified: | 01 Oct 2019 07:47 |