AGB Stars in Globular Clusters

Details AGB Stars in Globular Clusters AGB Stars in Globular Clusters

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..378..105l&link_type=abstract

Why Galaxies Care About AGB Stars: Their Importance as Actors and Probes. ASP Conference Series, Vol. 378, proceedings of the co

Astronomy and Astrophysics

Astronomy

Scientific paper

From our study of AGB stars in globular clusters we present here three results: (1) Period-luminosity relations derived for the long-period variables in four clusters show a similar splitting into two sequences but also differ in the maximum luminosity reached. (2) C/O ratios measured in O-rich AGB stars in NGC 1846 prove the increase of C/O with luminosity, but also reveal exceptions to the general trend. (3) AGB stars in 47 Tuc reveal a remarkable change of mid-infrared dust features as the stars evolve up the AGB.

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