Modeling the Effect of Pulsation on the Dust Spectrum of Carbon Star V Cyg.

Details Modeling the Effect of Pulsation on the Dust Spectrum of Carbon Star V Cyg. Modeling the Effect of Pulsation on the Dust Spectrum of Carbon Star V Cyg.

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21934304s&link_type=abstract

American Astronomical Society, AAS Meeting #219, #343.04

Astronomy and Astrophysics

Astronomy

Scientific paper

Intermediate mass stars are major contributors of material to interstellar medium via mass loss during their Asymptotic Giant Branch (AGB) phase. The mass loss is believed to be driven by the pulsation of these stars, but the precise effects of stellar pulsations on dust formation and mass loss remain a mystery. Here we present DUSTY radiative transfer models of a single carbon star V Cyg, whose infrared spectrum was observed using ISO SWS six times over the course of a single pulsation cycle. We find that the spectrum changes very little from maximum to minimum light and the consequent changes in the dust shell parameters are small. The model fits to the observed spectra are consistent with no changes in the type dust formed and only small changes in the dust condensation temperature and/or the optical depth.

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