Computer Science
Scientific paper
Feb 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983prhe.work..373f&link_type=abstract
IN: ESO Workshop on Primordial Helium, Garching, West Germany, February 2, 3, 1983, Proceedings (A83-50030 24-90). Garching, Wes
Computer Science
1
Abundance, Interstellar Matter, Lithium Isotopes, Metallicity, Absorption Spectroscopy, Interstellar Extinction, Line Spectra, Mass Ratios, Molecular Absorption
Scientific paper
A program to measure the value of the isotopic ratio Li-7/Li-6 in the diffuse interstellar medium is described and the results are presented and discussed. A Coude echelle spectrometer was used for absorption spectrometry of Delta Sco and Zeta Oph, with reddenings of E(B-V) = 0.16 and 0.32, respectively. Since most of the Li in the diffuse interstellar medium is ionized, the amount of Li II was estimated using available Ca I and Ca II data. A total Li abundance for the whole line of sight toward Delta Sco of 4.5 x 10 to the -11th was obtained. The total Li-7 abundance toward Zeta Oph, after correcting for the presence of a second absorbing cloud along the line of sight, was 1.6 x 10 to the -10th. The total Li-7 abundance toward both stars could be compatible with the meteoritic value, but the Li-7/Li-6 ratio is not. This result could be due to a local inhomogeneity whose Li-7/Li-6 ratio results from processing in stars.
Dennefeld Michel
Ferlet Roger
No associations
LandOfFree
The interstellar lithium abundance does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The interstellar lithium abundance, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The interstellar lithium abundance will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1307697