Absorption Spectra of Circumstellar Disks

Details Absorption Spectra of Circumstellar Disks Absorption Spectra of Circumstellar Disks

Jan 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997cokon.100..387k&link_type=abstract

Communications of the Konkoly Observatory, No. 100 (Vol. XII, 2), p. 387-392 (1997)

Physics

Scientific paper

The young objects, being still closely related to the relic, circumstellar matter are known as Be stars, characterized by the emission in the Fraunhofer D3 HeI (5876 A) line and the specific profiles of the hydrogen Balmer lines containing emission cores originating in rotating, circumstellar disks. Such circumstellar shells are capable of producing quite a substantial reddening, as well as the infrared emission. However, the extinction law, derived from their spectra is far not the same as in the general interstellar medium. The disks also apparently do not contain the carriers of the diffuse interstellar bands (DIBs) as the latter are either absent or very weak in spectra of Be stars.

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