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Fluorine Abundances of AGB Stars in Stellar Clusters
Univ Vienna, Dept Astrophys, A-1010 Vienna, Austria..
Univ Vienna, Dept Astrophys, A-1010 Vienna, Austria..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
Natl Opt Astron Observ, Tucson, AZ 85726 USA..
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2015 (English)In: WHY GALAXIES CARE ABOUT AGB STARS III: A CLOSER LOOK IN SPACE AND TIME, ASTRONOMICAL SOC PACIFIC , 2015, Vol. 497, 305-306 p.Conference paper, Published paper (Refereed)
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Text
Abstract [en]

We have measured the abundance of fluorine, [F/Fe], in a number of AGB stars in stellar clusters have correlated the results with their C/O ratios. This allows us to investigate the change in the fluorine abundance along the evolution on the giant branch. The target list includes primarily O-rich stars in three LMC globular clusters - NGC 1806, NGC 1846 and NGC 1978 - as well as Rup 106 and 47 Tuc in our Galaxy. The observational data were obtained with the PHOENIX spectrograph, and the COMA code was used for modelling the synthetic spectra. Within individual clusters, we find consistent [F/Fe] values at similar C/O for most of our target stars.

Place, publisher, year, edition, pages
ASTRONOMICAL SOC PACIFIC , 2015. Vol. 497, 305-306 p.
Series
Astronomical Society of the Pacific Conference Series, 497
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-294840ISI: 000371098100058ISBN: 9781583818794 (print)ISBN: 9781583818787 (print)OAI: oai:DiVA.org:uu-294840DiVA: diva2:947297
Conference
Conference on Why Galaxies Care About AGB Stars III: A Closer Look in Space and Time, JUL 28-AUG 01, 2014, Univ Vienna, Vienna, AUSTRIA
Available from: 2016-07-07 Created: 2016-05-27 Last updated: 2016-07-07Bibliographically approved

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