Dust in PNe - Influence of Dust on the Radiation Field in Shell Modeling

Details Dust in PNe - Influence of Dust on the Radiation Field in Shell Modeling Dust in PNe - Influence of Dust on the Radiation Field in Shell Modeling

Nov 2000

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000ign..confe..31k&link_type=abstract

Ionized Gaseous Nebulae. Mexico City November 21- 24, 2000, meeting abstract

Computer Science

Scientific paper

PNe shells are usually modeled applying photoionization only. Cohen and Barl ow (1974, ApJ, 193, 401) have already found that a significant fraction of dust is embedded in the nebular shell. Since the IRAS mission, it is well known that this is the common situation. IRAS and ISO measurements also proofed that dust is not concentrated at the outer edges of the ionized shell, but that it is often located in the inner parts of the PN. Thus, codes like CLOUDY were adapted to model the MIR and FIR spectral energy distribution (SED) by including dust emission. However, the effect of the UV extinction by dust particles was not implyed. Therefore, we present various synthetic spectra applying dust codes including a complete description of fluctuating temperature dust grains (Koller & Kimeswenger, 1999, ASP Conf. Ser., 188, 271; 2000 ApSS in press).

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