Metallicity, pulsation and mass loss in globular cluster low-mass AGB stars

Details Metallicity, pulsation and mass loss in globular cluster low-mass AGB stars Metallicity, pulsation and mass loss in globular cluster low-mass AGB stars

Feb 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aipc.1094..876m&link_type=abstract

COOL STARS, STELLAR SYSTEMS AND THE SUN: Proceedings of the 15th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun.

Physics

Globular Clusters In The Milky Way, Circumstellar Shells, Clouds, And Expanding Envelopes, Circumstellar Masers, Giant And Subgiant Stars

Scientific paper

We present here continuing work, focussing on the Galactic globular clusters (GCs) ω Centauri (the most massive GC) and M15 (one of the most metal-poor). Spectral energy distribution fitting and dust envelope modelling using our recent Spitzer photometry in ω Centauri has allowed us to quantatively explore mass loss along the giant branch and yield a total mass-loss rate from the system. We also report on our recently-announced discovery of the most metal-poor Galactic AGB variable known, and investigate the link between long-secondary-period variability and outflow.

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