The ultraviolet interstellar extinction curve in the Pleiades

Details The ultraviolet interstellar extinction curve in the Pleiades The ultraviolet interstellar extinction curve in the Pleiades

Feb 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...244..199w&link_type=abstract

Astrophysical Journal, Part 1, vol. 244, Feb. 15, 1981, p. 199-204.

Astronomy and Astrophysics

Astronomy

33

Astronomical Spectroscopy, Cosmic Dust, Interstellar Extinction, Pleiades Cluster, Ultraviolet Astronomy, Absorption Spectra, Far Ultraviolet Radiation, Spectral Bands, Star Clusters

Scientific paper

The wavelength dependence of ultraviolet extinction in the Pleiades dust clouds has been determined from IUE observations of HD 23512, the brightest heavily reddened member of the Pleiades cluster. There is evidence for an anomalously weak absorption bump at 2200 A, followed by an extinction rise in the far ultraviolet with an essentially normal slope. A relatively weak absorption band at 2200 A and a weak diffuse absorption band at 4430 A seem to be common characteristics of dust present in dense clouds. Evidence is presented which suggests that the extinction characteristics found for HD 23512 are typical for a class of extinction curves observed in several cases in the Galaxy and in the LMC.

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