Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..95..227h&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 95, no. 1, Sept. 1983, p. 227-231.
Astronomy and Astrophysics
Astrophysics
6
Absorption Spectra, Bacteria, Interstellar Extinction, Stellar Spectra, Ultraviolet Spectra, Amino Acids, Colonies, Interstellar Matter, Light Curve, Ultraviolet Absorption
Scientific paper
The ultraviolet absorbance spectrum of a mixed culture of coliform bacteria is obtained and compared to recent measurements of the extinction curve of starlight. The absorbance of the bacterial suspensions over the wavebands 3500-2000 A and 7000-3400 A are presented along with a comparison of the extinction values for the star HD 14250 with the alpha function of the coliform suspension, which is a measure of the total amount of the material in the line of sight of the star. The agreement is excellent and is just as good as the agreement obtained by Karim et al. (1983) for typtophan in isolation, supporting the contention that the tryptophan responsible for the astronomical extinction is present in the interstellar grains in protein form.
Hoyle Fiona
Jansz E. R.
Jayatissa P. M.
Wickramasinghe Chandra N.
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