Einstein A coefficients for rovibronic lines of the A 2 → X 2Σ+ and B' 2Σ+→ X 2 Σ+ transitions of MgH

被引:46
作者
GharibNezhad, Ehsan [1 ]
Shayesteh, Alireza [1 ]
Bernath, Peter F. [2 ]
机构
[1] Univ Tehran, Coll Sci, Sch Chem, Tehran 14176, Iran
[2] Old Dominion Univ, Dept Chem & Biochem, Norfolk, VA 23529 USA
关键词
molecular data; stars: late-type; subdwarfs; LYING ELECTRONIC STATES; ISOTOPIC ABUNDANCES; MAGNESIUM HYDRIDE; EMISSION-SPECTRA; GROUND-STATE; GIANT STARS; INTENSITIES; IONIZATION; ARCTURUS; SYSTEMS;
D O I
10.1093/mnras/stt510
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Einstein A coefficients have been calculated for rovibronic lines of the A (2) -> X (2)Sigma(+) and B-' (2)Sigma(+) -> X (2)Sigma(+) transitions of (MgH)-Mg-24. Using the experimentally determined analytic potential energy curve for the X (2)Sigma(+)state, and the Rydberg-Klein-Rees potentials for the A (2) and B-' (2)Sigma(+)states, combined with the most recent ab initio transition dipole moments, rovibronic transition moments were computed. The rovibronic transition frequencies were obtained accurately by subtracting the published term values of the X (2)Sigma(+), A (2) and B-' (2)Sigma(+) states. Using the rovibronic transition dipole moments, transition frequencies and the Honl-London factors, the Einstein A coefficients were calculated individually for similar to 30 000 rovibronic lines of the A (2) -> X (2)Sigma(+) and B-' (2)Sigma(+) -> X (2)Sigma(+) transitions of (MgH)-Mg-24.
引用
收藏
页码:2043 / 2047
页数:5
相关论文
共 61 条
[1]  
Balfour W. J., 1976, Astronomy and Astrophysics Supplement Series, V26, P389
[2]   GROUND-STATE AND A2II EXCITED-STATE OF MAGNESIUM DEUTERIDE [J].
BALFOUR, WJ ;
CARTWRIGHT, HM .
CANADIAN JOURNAL OF PHYSICS, 1975, 53 (15) :1477-1482
[3]   MGH AND MGD SPECTRA IN THE 230-NM 235-NM REGION [J].
BALFOUR, WJ .
JOURNAL OF MOLECULAR SPECTROSCOPY, 1980, 79 (02) :507-511
[4]   ELECTRONIC SPECTRUM OF MAGNESIUM HYDRIDE AND MAGNESIUM DEUTERIDE [J].
BALFOUR, WJ .
JOURNAL OF PHYSICS PART B ATOMIC AND MOLECULAR PHYSICS, 1970, 3 (12) :1749-&
[5]   A 2PI-!X 2SIGMA+ SYSTEMS OF MG-24H, MG-25H, AND MG-26H [J].
BALFOUR, WJ .
ASTROPHYSICAL JOURNAL, 1970, 162 (03) :1031-&
[6]   LOW-LYING ELECTRONIC STATES OF MAGNESIUM HYDRIDE [J].
BALFOUR, WJ ;
CARTWRIGHT, HM .
CHEMICAL PHYSICS LETTERS, 1975, 32 (01) :82-85
[7]   HIGH-RESOLUTION EMISSION-SPECTRA OF MGH AND MGD IN 600 TO 850 NM WAVELENGTH REGION [J].
BALFOUR, WJ ;
LINDGREN, B .
CANADIAN JOURNAL OF PHYSICS, 1978, 56 (06) :767-779
[8]   B'2SIGMA+ -]SIGMAX2SIGMA+ SYSTEMS OF MGH AND MGD [J].
BALFOUR, WJ ;
CARTWRIGHT, HM .
CANADIAN JOURNAL OF PHYSICS, 1976, 54 (18) :1898-1904
[9]   THE SURFACE GRAVITY OF ARCTURUS FROM MGH LINES, STRONG METAL LINES AND THE IONIZATION EQUILIBRIUM OF IRON [J].
BELL, RA ;
EDVARDSSON, B ;
GUSTAFSSON, B .
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1985, 212 (03) :497-515
[10]  
Bernath P. F., 2005, SPECTRA ATOMS MOL