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

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

2008-02-05

arxiv.org/abs/0802.0676v1

AIP Conf.Proc.1001:339-348,2008

Astronomy and Astrophysics

Astrophysics

10 pages, 6 figures, contribution from the IX Torino Workshop, to be published by AIP

Scientific paper

10.1063/1.2916983

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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