Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-08-18
Astronomy and Astrophysics
Astrophysics
16 Pages; 3 Figures; 3 Tables; Accepted for publication in PASP
Scientific paper
10.1086/592717
We have determined Al, $\alpha$, Fe-peak, and neutron capture elemental abundances for five red giant branch (RGB) stars in the Galactic globular cluster M10. Abundances were determined using equivalent width analyses of moderate resolution (R$\sim$15,000) spectra obtained with the Hydra multifiber positioner and bench spectrograph on the WIYN telescope. The data sample the upper RGB from the luminosity level near the horizontal branch to about 0.5 mag below the RGB tip. We find in agreement with previous studies that M10 is moderately metal-poor with [Fe/H]=-1.45 ($\sigma$=0.04). All stars appear enhanced in Al with $<$[Al/Fe]$>$=+0.33 ($\sigma$=0.19), but no stars have [Al/Fe]$\ga$+0.55. We find the $\alpha$ elements to be enhanced by +0.20 to +0.40 dex and the Fe--peak elements to have [el/Fe]$\sim$0, which are consistent with predictions from type II SN ejecta. Additionally, the cluster appears to be r-process rich with $<$[Eu/La]$>$=+0.41.
Burks Geoffrey
Haynes Sharina
Johnson Christian I.
Pilachowski Catherine A.
No associations
LandOfFree
Chemical Analysis of Five Red Giants in the Globular Cluster M10 (NGC 6254) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Chemical Analysis of Five Red Giants in the Globular Cluster M10 (NGC 6254), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemical Analysis of Five Red Giants in the Globular Cluster M10 (NGC 6254) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-131560