Far-ultraviolet extinction and diffuse interstellar bands

Details Far-ultraviolet extinction and diffuse interstellar bands Far-ultraviolet extinction and diffuse interstellar bands

Sep 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001mnras.326.1095m&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 326, Issue 3, pp. 1095-1100.

Astronomy and Astrophysics

Astronomy

7

Dust, Extinction, Ism: Molecules

Scientific paper

We relate the equivalent widths of the major diffuse interstellar bands (DIBs) near 5797 and 5780Å with different colour excesses, normalized by E(B-V), which characterize the growth of interstellar extinction in different wavelength ranges. It is demonstrated that the two DIBs correlate best with different parts of the extinction curve, and the ratio of these diffuse bands is best correlated with the far-ultraviolet (UV) rise. A number of peculiar lines of sight are also found, indicating that the carriers of some DIBs and the far-UV extinction can be separated in certain environments, e.g. towards the Per OB2 association.

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