Release 11.12 ("Hergest Ridge")


Gclusters :: Bibliographic item "gc522"

Article ID: gc522
AuthorBoberg, Owen M.; Friel, Eileen D.; Vesperini, Enrico
TitleChemical Abundances in NGC 5024 (M53): A Mostly First Generation Globular Cluster
JournalThe Astrophysical Journal, Volume 824, Issue 1, 15 pp.
Year of publication2016 (on gclusters from 2017-02-06 10:53:21 )
AbstractWe present the Fe, Ca, Ti, Ni, Ba, Na, and O abundances for a sample of 53 red giant branch stars in the globular cluster NGC 5024 (M53). The abundances were measured from high signal-to-noise medium resolution spectra collected with the Hydra multi-object spectrograph on the Wisconsin-Indiana-Yale-NOAO 3.5 m telescope. M53 is of interest because previous studies based on the morphology of the cluster’s horizontal branch suggested that it might be composed primarily of first generation (FG) stars and differ from the majority of other GCs with multiple populations, which have been found to be dominated by the second generation (SG) stars (...) These findings further support that M53 might be a mostly first generation cluster and could give further insight into how globular clusters formed the light element abundance patterns we observe in them today.
Submitted byPaolo Ventura
TagsNGC 5024

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