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IR photometry and models for the dust envelopes of two carbon stars

Bogdanov, M. B.; Taranova, O. G.

The results of JHKLM photometry of two carbon stars are presented: the irregular variable NQ Cas and the Mira star BD Vul. Data on the mean fluxes supplemented with mid-IR observations with the IRAS, AKARI, andWISE satellites are used to compute spherically symmetrical model dust envelopes for the stars, consisting of particles of amorphous carbon…

IR photometry and dust-shell models for two carbon stars

Bogdanov, M. B.; Taranova, O. G.

We present JHKLM photometry of the carbon stars ST And and T Lyn acquired in 2000-2010. Along with brightness variations due to pulsations, changes on timescales of 2000-3000 days are also observed. Our combined light curves can be satisfactorily represented with light elements derived from visual observations, but the maxima are delayed relative …