MS, S and C Stars in the Infrared. Luminosities and Mass Loss Rates

R. Guandalini

doi:10.1063/1.2916983

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arXiv · 0802.0676

MS, S and C Stars in the Infrared. Luminosities and Mass Loss Rates

R. Guandalini

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Abstract

In this note I present an outline of infrared (IR) photometric AGB properties, based on two samples of Galactic Long Period Variables (C- and S-type respectively). I show the various selection criteria used during the choice of the sources and describe the motivations of observing them at near- and mid-IR wavelengths. I discuss the problems encountered in estimating their luminosity and distance and motivate the methods I choose for this purpose. Properties of the luminosity functions and of the Hertzsprung-Russell (HR) diagrams obtained from the analysis are discussed. Finally, the choices made for estimating of the mass loss rates are described and preliminary results concerning them are shown.

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R. Guandalini. 2008-02-05. MS, S and C Stars in the Infrared. Luminosities and Mass Loss Rates. https://doi.org/10.1063/1.2916983

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