On the System of Diffuse Interstellar Bands at 5844 and 5850 Angstrom

Details On the System of Diffuse Interstellar Bands at 5844 and 5850 Angstrom On the System of Diffuse Interstellar Bands at 5844 and 5850 Angstrom

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...419..692k&link_type=abstract

Astrophysical Journal v.419, p.692

Astronomy and Astrophysics

Astronomy

7

Ism: Molecules, Line: Identification

Scientific paper

Two neighboring diffuse interstellar bands (DIBs) at 5844 and 5850 Å are shown to be of different origin. The presence or absence of the 5844 DIB is related to the ratio of the two prominent DIBs at 5780 and 5797 Å as well as to the nature of the ultraviolet extinction curve. The 5844 Å DIB is very sensitive to the extinction, being completely absent in cases where the far-UV extinction is low. This suggests that the carrier is destroyed by photons having energies above 11 or 12 eV. The 5850 Å DIB correlates very well with the well-studied DIB at 5797 Å, suggesting that these two features belong to the same family of DIBs and may be produced by the same carrier.

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