AGB Period-Luminosity Relationships from SAGE

Details AGB Period-Luminosity Relationships from SAGE AGB Period-Luminosity Relationships from SAGE

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21545905r&link_type=abstract

American Astronomical Society, AAS Meeting #215, #459.05; Bulletin of the American Astronomical Society, Vol. 42, p.485

Astronomy and Astrophysics

Astronomy

Scientific paper

Mass loss from stars evolving along the Asymptotic Giant Branch (AGB), along with supernovae, are the main sources of chemical enrichment of the interstellar medium in processed material, particularly carbon, nitrogen and s-process elements. AGB stellar winds are thought to be driven by stellar variability. Pulsation levitates stellar material, where it condenses to dust. Radiation pressure then expels the dust, which is collisionally coupled to the gas. We present infrared period-luminosity relationships for a sample of 14,000 AGB stars with variability parameters derived from the MACHO survey (Alcock, et al. 1996, Fraser et al. 2008), and infrared photometry from the SAGE survey of the LMC (Meixner, et al. 2006).

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