Mid-infrared Studies of the AGB Star Populations in the Local Group Galaxies : the Magellanic Clouds

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概要

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• We present a brief summary of the ISO survey of AGB stars in 8 populous intermediateage clusters of the Magellanic Clouds. Totally, more than 100 AGB and RGB stars were observed at 4.5, 6.7 and 12 μm. We introduce a new method to estimate effective temperatures of oxygen-rich AGB stars, and derive precise Mbol and Teff for a large population of AGB objects in both LMC and SMC. The derived stellar parameters are used to construct observed HR diagrams whichare employed further to estimate cluster ages using the isochrone fitting. We show that proposed method gives a powerful tool to study AGB star populations within the Local Group galaxies, especially, when backed up with the observations from forthcoming mid-IR astronomical spacefacilities (ASTRO-F, SIRTF) and large ground-based telescopes (SUBARU, VLT, etc.).

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著者

• Vladas VANSEVICIUS

  Institute of Physics

• Marc Sauvage

  Cea.dsm.dapnia.service Of D'astrophys

• Arunas KUČINSKAS

  National Astronomical Observatory

• Toshihiko TANABÉ

  Institute of Astronomy, School of Science, The University of Tokyo

• Toshihiko Tanabé

  Institute Of Astronomy School Of Science The University Of Tokyo

• Arunas KuČinskas

  National Astronomical Observatory

関連論文

• Spectral Energy Diasributions of Dusty Galaxies
• Mid-infrared Studies of the AGB Star Populations in the Local Group Galaxies : the Magellanic Clouds

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