Detection of interstellar (C-13)N toward Zeta Ophiuchi

Journal Article · Tue Mar 01 04:00:00 EST 1988 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/185118· OSTI ID:6995590

Crane, P; Hegyi, D J

Observations of a diffuse interstellar cloud toward Zeta Oph, obtained with resolution 100,000-150,000 near the 3874.608-A R(0) line of (C-12)N using a coude echelle spectrograph on the 1.4-m telescope at ESO during 1984 and 1985, are reported. Data from 54 20-min runs were fitted to Gaussian line shapes using the line center, depth, and width of the R(0) and R(1) lines of (C-12)N and the line center and depth of the R(0) line of (C-13)N as fitting parameters. The (C-13)N R(0) line, with equivalent width 0.190 + or - 0.020 mA, was detected 173.7 + or - 0.8 mA to the red of (C-12)N R(0); the corresponding isotope abundance ratio, (C-12)N/(C-13)N = 47.3 + 5.5 or -4.4, is shown to be in good agreement with previous measurements for CH(+) (Hawkins et al., 1985). 13 references.

• Research Organization: European Southern Observatory, Garching (Germany, F.R.); Michigan, Univ., Ann Arbor (USA)
• OSTI ID: 6995590
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 326; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
CARBON 12
CARBON 13
CARBON ISOTOPES
CHEMICAL COMPOSITION
CHEMISTRY
COMPARATIVE EVALUATIONS
COSMIC GASES
COSMOCHEMISTRY
CYANOGEN
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FLUIDS
GASES
INTERSTELLAR SPACE
ISOTOPE RATIO
ISOTOPES
LIGHT NUCLEI
NUCLEI
SPACE
STABLE ISOTOPES