The 2.8 to 3.6 micron spectra of micro-organisms with varying H2O-ice content

Details The 2.8 to 3.6 micron spectra of micro-organisms with varying H2O-ice content The 2.8 to 3.6 micron spectra of micro-organisms with varying H2O-ice content

Feb 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983esms.reptr....h&link_type=abstract

In its The Extinction of Starlight at Wavelengths near 2200A. The 2.8 to 3.6 Micron Spectra of Micro-Organisms with Varying H2O

Astronomy and Astrophysics

Astronomy

Bacteria, Exobiology, Ice, Infrared Spectra, Interstellar Matter, Infrared Absorption, Infrared Astronomy, Infrared Radiation, Interstellar Extinction, Spectral Signatures

Scientific paper

The extinction curves of bacterial grains on which variable mass fractions of water-ice are condensed were calculated in order to assess the infrared properties of grains in dense interstellar molecular clouds. Because the ice band at 3.07 microns is stronger by a factor of several tens of thousands than the OH and CH stretching bands in organic materials, even a small mass fraction of ice condensed inside or on the surface of the particles modifies and tends to obscure the characteristic biological signature at 3.4 microns.

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