The Ultraviolet Absorption Band at 2175 Å: Correlations with Other Interstellar Features

Details The Ultraviolet Absorption Band at 2175 Å: Correlations with Other Interstellar Features The Ultraviolet Absorption Band at 2175 Å: Correlations with Other Interstellar Features

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..46..357d&link_type=abstract

Astrophysics and Space Science, Volume 46, Issue 2, pp.357-369

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

The hump in the ultraviolet part of the interstellar extinction curve is interpreted as a broad diffuse absorption band. Its equivalent width is estimated for 36 stars by means of OAO-2 data. The equivalent widths are correlated with the following parameters: colour excessE(B-V), colour excessE(B - V), depth of the band δm max, equivalent widths of the diffuse bands at 5780 and 6284 Å, and the column density of neutral hydrogenN HI. The physical parameters half-width and oscillator strength of the band at 2175 Å are estimated.

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