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| Paper: |
AGB Stars in Globular Clusters |
| Volume: |
378, Why Galaxies Care About AGB Stars: Their Importance as Actors and Probes |
| Page: |
105 |
| Authors: |
Lebzelter, T.; Hinkle, K.; Lederer, M.; Posch, T.; Wood, P. |
| Abstract: |
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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