NOAO >   Observing Info >   Approved Programs >   2016A-0228

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Program Information for 2016A-0228


PI: Carlos Abia, University of Granada, cabia@ugr.es
Address: Dpto. Fisica Teorica y del Cosmos, Universidad de Granada, 18071 Granada, Spain Spain

CoI: Katia Cunha, U. of Arizona
CoI: Verne V Smith, NOAO

Title: Extragalactic AGB carbon stars as probes to test the origin of fluorine in the universe.

Abstract: The origin of fluorine is still unknown. There are several sources proposed for its production but until now there is evidence only in AGB stars. However, recent re-determinations of the F content in these stars has opened a discussion about the real contribution of AGB stars to the total F inventory and on the dependence of its production with the stellar metallicity. We will use high resolution spectroscopy to determine F abundances from HF lines in the K-band in metal-poor AGB carbon stars belonging to the Sagittarius dSph and SMC satellite galaxies and some Galactic SC-type carbon stars to better evaluate the role of AGB stars in the origin and evolution of this element in the universe and the mechanism for its production in these stars.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2016A):  GEM-S-SVC/PHNX -- 20.3hrs band 2 (GS-2016A-Q-73)


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2016A-0228

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