4 Galactic globular clusters Fe line depths : J/MNRAS/434/358


Authors : Sakari C.M. orcid , Shetrone M., Venn K. (hide) , Shetrone M., Venn K. et..al

Bibcode : 2013MNRAS.434..358S (ADS) (Simbad) (Objects) (hide)

CDS Keywords : Clusters, globular;
UAT : Globular star clusters

Observation (OC)

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Inserted into VizieR : 26-Feb-2015
Last modification : 06-Aug-2024

Spectrum syntheses of high-resolution integrated light spectra of Galactic globular clusters. (2013)

Keywords : techniques spectroscopic - globular clusters: individual: 47 Tuc - globular clusters: individual: M3 - globular clusters: individual: M13 - globular clusters: individual: NGC 7006 - globular clusters: individual: M15

Abstract:Spectrum syntheses for three elements (Mg, Na and Eu) in high-resolution integrated light spectra of the Galactic globular clusters 47 Tuc, M3, M13, NGC 7006 and M15 are presented, along with calibration syntheses of the solar and Arcturus spectra. Iron abundances in the target clusters are also derived from integrated light equivalent width analyses. Line profiles in the spectra of these five globular clusters are well fitted after careful consideration of the atomic and molecular spectral features, providing levels of precision that are better than equivalent width analyses of the same integrated light spectra, and that are comparable to the precision in individual stellar analyses. The integrated light abundances from the ...(more)
Abstract: (hide)
The 47 Tuc spectrum was kindly provided by R. Bernstein and A. McWilliam. It is the same spectrum analysed in McWillian & Bernstein (2008ApJ...684..326M); details on the observations and data reduction can be found there. The other spectra were observed with the High Resolution Spectrograph (HRS) on the Hobby-Eberly Telescope (HET) at McDonald Observatory in Fort Davis, Texas, in 2011 and 2012.


                
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