Ice mantles and the anomalous ultraviolet extinction of HD 29647

Details Ice mantles and the anomalous ultraviolet extinction of HD 29647 Ice mantles and the anomalous ultraviolet extinction of HD 29647

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.196p..81w&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 196, Sept. 1981, p. 81P-85P. Research supported by the Science Research

Astronomy and Astrophysics

Astronomy

19

Absorption Spectra, B Stars, Ice, Interstellar Extinction, Stellar Spectrophotometry, Anomalies, Broadband, Graphite, Infrared Astronomy

Scientific paper

HD 29647, a reddened early-type star in the Taurus dark cloud, was shown by Snow and Seab (1980) to have anomalously weak absorption in the 2200 A feature. In this contribution, complementary infrared (1 - 4 micron) observations are presented. Results indicate that the anomaly cannot be explained by ice mantle formation on the grains. Chemical processing of graphite grains is proposed as an alternative explanation.

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