Isotopic abundances of magnesium in five G and K dwarfs

Journal Article · Fri Feb 01 04:00:00 EST 1980 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/157697· OSTI ID:5259358

Tomkin, J; Lambert, D L

High-resolution low-noise Reticon observations of MgH lines in the spectra of ..mu.. Cas, epsilon Eri, 61 Cyg A and B, and Gmb 1830 have been analyzed by spectrum synthesis. The mixtures of the isotopes in ..mu.. Cas, epsilon Eri, and 61 Cyg A and B are not significantly different from the terrestrial mixture (/sup 24/Mg:/sup 25/Mg:/sup 26/Mg=79:10:11). The estimated errors are such that limits for any enrichment or deficiency of /sup 25/Mg and /sup 26/Mg are /sup 24/Mg:/sup 25/Mg:/sup 26/Mg=74:13:13 to 86:7:7.

• Research Organization: McDonald Observatory and Department of Astronomy, University of Texas
• OSTI ID: 5259358
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 235:3; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM 27
ALUMINIUM ISOTOPES
EMISSION SPECTRA
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HYDRIDES
HYDROGEN COMPOUNDS
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
MAGNESIUM 24
MAGNESIUM 25
MAGNESIUM 26
MAGNESIUM COMPOUNDS
MAGNESIUM HYDRIDES
MAGNESIUM ISOTOPES
MAIN SEQUENCE STARS
NUCLEI
NUCLEOSYNTHESIS
ODD-EVEN NUCLEI
SODIUM 23
SODIUM ISOTOPES
SPECTRA
STABLE ISOTOPES
STAR EVOLUTION
STARS