A NEW SOLAR FLUORINE ABUNDANCE AND A FLUORINE DETERMINATION IN THE TWO OPEN CLUSTERS M67 AND NGC 6404

@article{Maiorca2014ANS,
  title={A NEW SOLAR FLUORINE ABUNDANCE AND A FLUORINE DETERMINATION IN THE TWO OPEN CLUSTERS M67 AND NGC 6404},
  author={Enrico Maiorca and Han Uitenbroek and Stefan Uttenthaler and Sofia Randich and Maurizio Busso and Laura Magrini},
  journal={The Astrophysical Journal},
  year={2014},
  volume={788}
}
We present a new determination of the solar fluorine abundance together with abundance measurements of fluorine in two Galactic open clusters. We analyzed a sunspot spectrum, observed by L. Wallace and W. Livingston with the Fourier Transform Spectrometer at the McMath/Pierce Solar Telescope situated on Kitt Peak, and spectra of four giants in the old cluster M67 (∼4.5 Gyr) and three giants in the young cluster NGC 6404 (∼0.5 Gyr), obtained with the CRIRES spectrograph at the Very Large… 

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References

SHOWING 1-10 OF 52 REFERENCES

The Fluorine Abundance in a Galactic Bulge AGB Star Measured from CRIRES Spectra

We present measurements of the fluorine abundance in a Galactic bulge asymptotic giant branch (AGB) star. The measurements were performed using high-resolution K-band spectra obtained with the CRIRES

Fluorine Abundances in the Large Magellanic Cloud and ω Centauri: Evidence for Neutrino Nucleosynthesis?

The behavior of fluorine with metallicity has not yet been probed in any stellar population. In this work, we present the first fluorine abundances measured outside of the Milky Way from a sample of

Fluorine Abundances in the Orion Nebula Cluster

This is a pilot study using cool dwarfs as sources with which to probe fluorine abundances via HF. This molecule is detected for the first time in young K-M dwarf members of an OB association. The

THE ABUNDANCE OF FLUORINE IN THE HYADES, NGC 752, AND M67

The abundance of fluorine is determined from the 2.3358 μm feature of the molecule HF for several giants in the Hyades, NGC 752, and M67 open clusters from spectra obtained with the Phoenix IR

THE FIRST FLUORINE ABUNDANCE DETERMINATIONS IN EXTRAGALACTIC ASYMPTOTIC GIANT BRANCH CARBON STARS

Fluorine (19F) abundances (or upper limits) are derived in six extragalactic asymptotic giant branch (AGB) carbon stars from the HF(1–0) R9 line at 2.3358 μm in high-resolution spectra. The stars

Chemical evolution of fluorine in the bulge , High-resolution K-band spectra of giants in three fields

Context. Possible main formation sites of fluorine in the Universe include asymptotic giant branch (AGB) stars, the v-process in Type II supernova, and/or Wolf-Rayet stars. The importance of the

FLUORINE IN ASYMPTOTIC GIANT BRANCH CARBON STARS REVISITED

A re-analysis of the fluorine abundance in three Galactic asymptotic giant branch (AGB) carbon stars (TX Psc, AQ Sgr, and R Scl) has been performed from the molecular HF (1-0) R9 line at 2.3358 μm.

Fluorine abundances in dwarf stars of the solar neighbourhood

Aims. In spite of many observational efforts aiming to characterize the chemical evolution of our Galaxy, not much is known about the origin of fluorine (F). Models suggest that the F found in t he

Fluorine Abundances in the Milky Way Bulge

Fluorine (19F) abundances are derived in a sample of six bulge red giants in Baade’s window. These giants span a factor of 10 in metallicity, and this is the first study to define the behavior of 19F

FLUORINE VARIATIONS IN THE GLOBULAR CLUSTER NGC 6656 (M22): IMPLICATIONS FOR INTERNAL ENRICHMENT TIMESCALES

Observed chemical (anti)correlations in proton-capture elements among globular cluster stars are presently recognized as the signature of self-enrichment from now extinct, previous generations of
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