Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2009-06-19
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
Accepted for publication in MNRAS
Scientific paper
An abundance analysis based on a high-resolution spectrum is presented for a newly discovered post-AGB star in the globular cluster M79. The surprising result is that the iron abundance of the star is apparently about 0.6 dex less than that of the cluster's red giants as reported by published studies including a recent high-resolution spectroscopic analysis by Carretta and colleagues. Abundances relative to iron appear to be the same for the post-AGB star and the red giants for the 15 common elements. It is suggested that the explanation for the lower abundances of the post-AGB star may be that its atmospheric structure differs from that of a classical atmosphere; the temperature gradient may be flatter than predicted by a classical atmosphere.
Lambert David L.
Sahin Timur
No associations
LandOfFree
High Resolution Optical Spectroscopy of a Newly Discovered Post-AGB Star with a Surprising Metallicity in the Globular Cluster M79 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 High Resolution Optical Spectroscopy of a Newly Discovered Post-AGB Star with a Surprising Metallicity in the Globular Cluster M79, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High Resolution Optical Spectroscopy of a Newly Discovered Post-AGB Star with a Surprising Metallicity in the Globular Cluster M79 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-401885