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Infrared spectroscopy of asymptotic giant branch stars in the Galactic bulge

Authors
  • S S, Golriz
  • Jadl, Blommaert
  • E, Vanhollebeke
  • Mat, Groenewegen
  • H J, Habing
  • F, Kemper
  • M, Schultheis
  • Aggm, Tielens
  • Lbfm, Waters
  • P R, Wood
  • Jan Cami
Type
Published Article
Journal
Monthly Notices of the Royal Astronomical Society
Publisher
Oxford University Press
Publication Date
Sep 30, 2014
Volume
443
Issue
4
Pages
3402–3434
Source
SETI Institute
License
Unknown

Abstract

We have selected a homogeneous sample of asymptotic giant branch (AGB) stars in the Galactic bulge population from the ISOGAL survey. Our target stars cover a wide range of mass-loss rates (∼ 10− 8–10− 4 M⊙ yr− 1) and differ primarily by their age on the AGB. This homogeneous sample is thus ideally suited to study the dust formation process as a function of age on the AGB. We observed our sample with Spitzer-Infrared Spectrograph, and studied the overall properties of the infrared spectra of these targets. The analysis is ...

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