The pre-supernova mass-loss behaviour of Red Supergiants

Details The pre-supernova mass-loss behaviour of Red Supergiants The pre-supernova mass-loss behaviour of Red Supergiants

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007sptz.prop40224d&link_type=abstract

Spitzer Proposal ID #40224

Computer Science

Scientific paper

The mass lost by massive stars as they pass through the Red Supergiant (RSG) phase is a crucial determinant in the terminal mass of the star, the nature of the resulting supernova explosion and the stellar end-state. However, up until now studies of this quantity have been problematic, owing to the low numbers of known RSGs and the difficulty of observing in the mid-IR. Here, we capitalize on the recent discoveries of two remarkable Galactic clusters containing unprecedented numbers of RSGs, and use the capabilities of {it Spitzer} to undertake a comprehensive and unique study of the pre-SN mass-loss of massive stars. We will use {it Spitzer/IRS} observations in conjunction with state-of-the-art dust models to provide the first quantitative investigation of the mass and composition of the pre-SN ejecta as a function of age and metallicity. This study is vital in determining the mass-loss behaviour of RSGs in particular, and the nature of supernova progenitors in general.

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