EAS Publications Series
Volume 40, 20103rd ARENA Conference: An Astronomical Observatory at CONCORDIA (Dome C, Antarctica)
|Page(s)||197 - 201|
|Published online||23 December 2009|
L. Spinoglio and N. Epchtein (eds)
EAS Publications Series, 40 (2010) 197-201
A Spectrophotometric Study of the Evolutionary Properties of AGB stars at Infrared Wavelengths
Dipartimento di Fisica, Università di Perugia and
INFN, Sezione di Perugia, via A. Pascoli, 06123 Perugia, Italy;
2 LERMA, CNRS-UMR 8112, Observatoire de Paris, France
Corresponding author: email@example.com
Spectrophotometric data at near- and mid-infrared (IR) wavelengths are crucial to understand the main evolutionary properties of the Asymptotic Giant Branch (AGB) phase. They can be used to reveal relations between spectral features at near-IR wavelengths and parameters obtained with mid-IR photometric observations (i.e. bolometric luminosity). We are performing such an analysis on a sample of Galactic AGB stars: spectrophotometric data from the IRTS satellite are studied and compared with observations in the mid-IR range obtained by other instruments. In this contribution we present preliminary results for a sub-sample of C-rich sources. We show which spectral features in the 1–4 μm region are most enhanced in the C-rich stars and explore how these features relate with the bolometric stellar luminosity. Finally, we comment on how an Antarctic IR telescope at Dome C will help this research by observations of AGB sources in the Galaxy and in the Magellanic Clouds.
© EAS, EDP Sciences, 2010
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