Back to Search
Start Over
High resolution spectroscopy of Red Giant Branch stars and the chemical evolution of the Fornax dwarf spheroidal galaxy
- Source :
- SF2A-2014: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, 337-340, STARTPAGE=337;ENDPAGE=340;TITLE=SF2A-2014: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, STARTPAGE=337;ENDPAGE=340;TITLE=SF2A-2014
- Publication Year :
- 2014
- Publisher :
- Société Francaise d’Astronomie et d’Astrophysique, 2014.
-
Abstract
- From VLT-FLAMES high-resolution spectra, we determine the abundances of several α, iron-peak and neutron-capture elements in 47 Red Giant Branch stars in the Fornax dwarf spheroidal galaxy. We confirm that SNe Ia started to contribute to the chemical enrichment of Fornax at [Fe/H] between --2.0 and --1.8 dex. Combining these abundances with accurate age estimates, we date the onset of SNe Ia to ≈ 12--10 Gyrs ago. Our results are compatible with an initial mass function that lacks the most massive stars and with a star formation going on throughout the whole history of Fornax.
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- SF2A-2014: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, 337-340, STARTPAGE=337;ENDPAGE=340;TITLE=SF2A-2014: Proceedings of the Annual meeting of the French Society of Astronomy and Astrophysics, STARTPAGE=337;ENDPAGE=340;TITLE=SF2A-2014
- Accession number :
- edsair.dedup.wf.001..8cc0d646307d996bd4cdfccffd4b650c