THE MAGNESIUM ISOTOPOLOGUES OF MgH IN THE A2Π-X2Σ+ SYSTEM

被引：31
|
作者：
Hinkle, Kenneth H. [1 ]
Wallace, Lloyd [1 ]
Ram, Ram S. [2 ]
Bernath, Peter F. [2 ,3 ]
Sneden, Christopher [4 ]
Lucatello, Sara [5 ]
机构：
[1] Natl Opt Astron Observ, Tucson, AZ 85726 USA
[2] Univ York, Dept Chem, York YO10 5DD, N Yorkshire, England
[3] Old Dominion Univ, Dept Chem & Biochemisty, Norfolk, VA 23529 USA
[4] Univ Texas Austin, Dept Astron, Austin, TX 78712 USA
[5] Osserv Astron Padova, INAF, I-35122 Padua, Italy
来源：
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2013年 / 207卷 / 02期
基金：
美国国家科学基金会;
关键词：
molecular data; stars: abundances; stars: late-type; sunspots; ISOTOPIC ABUNDANCE RATIOS; BAND STRENGTHS; GIANT STARS; LINES; SPECTRUM; SPECTROSCOPY; OPACITY; DWARFS;
D O I：
10.1088/0067-0049/207/2/26
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Using laboratory hollow cathode spectra we have identified lines of the less common magnesium isotopologues of MgH, (MgH)-Mg-25 and (MgH)-Mg-26, in the A(2)Pi-X-2 Sigma(+) system. Based on the previous analysis of (MgH)-Mg-24, molecular lines have been measured and molecular constants derived for (MgH)-Mg-25 and (MgH)-Mg-26. Term values and linelists, in both wavenumber and wavelength units, are presented. The A(2)Pi-X-2 Sigma(+) system of MgH is important for measuring the magnesium isotope ratios in stars. Examples of analysis using the new linelists to derive the Mg isotope ratio in a metal poor dwarf and giant are shown.
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页数：7
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