Circumstellar matter in Herbig AeBe stars

Details Circumstellar matter in Herbig AeBe stars Circumstellar matter in Herbig AeBe stars

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994inpht..35..375n&link_type=abstract

Infrared Physics & Technology, Volume 35, Issue 2-3, p. 375-381.

Physics

Scientific paper

I briefly summarize the observational evidence for large envelopes in the immediate environment of Herbig AeBe stars, and the results of star + envelope models. Then, I discuss two alternative possibilities to account for the observed mid-infrared fluxes, namely as the emission of very small grains (VSG) and policyclic aromatic hydrocarbons (PAH) in the envelope, or as due to the emission of circumstellar accretion disks, and suggest how MIR high spatial resolution observations can discriminate between these two hypotheses.

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