The interstellar (C-12)/(C-13) ratio toward Mu Normae

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Astrophysical Journal; (USA)

DOI:https://doi.org/10.1086/169329· OSTI ID:6163481

Crane, P; Lambert, D L; Palazzi, E ^[1]

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1. European Southern Observatory, Munich (Germany, F.R.) Texas Univ., Austin (USA) CNR, Istituto di Studio e Tecnologie sulle Radiazioni Extraterrestri, Bologna (Italy)

In this paper, the (C-12)/(C-13) ratio in the interstellar cloud toward the star Mu Normae (HD 149038) is determined by estimating the abundance of (C-13)H(+) relative to (C-12)H(+). The equivalent widths of the lines for these ions were determined at 4232 and 3957 A. For the (C-12)H(+) lines, these values were 26.988 + or - 0.108 mA at 4232 A and 15.561 + or - 0.250 mA, respectively, and for (C-13)H(+) the corresponding values were 0.556 + or - 0.0 mA and 0.202 + or - 0.171 mA. The (C-12)/(C-13) ratio obtained from the 4232 A line was 56.9 + or - 6.4, while that from the 3957 A line was 85 + or - 72. 19 refs.

• OSTI ID: 6163481
• Journal Information: Astrophysical Journal; (USA), Journal Name: Astrophysical Journal; (USA) Vol. 363; ISSN ASJOA; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
CARBON 12
CARBON 13
CARBON ISOTOPES
CHARGE-COUPLED DEVICES
CHEMICAL COMPOSITION
COSMIC GASES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FLUIDS
GASES
INTERSTELLAR SPACE
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
LINE WIDTHS
MOLECULES
NUCLEI
SEMICONDUCTOR DEVICES
SPACE
SPECTRA
SPECTROSCOPY
STABLE ISOTOPES