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.

引用

页数：7

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