SIMBAD references

2016MNRAS.458.4162M - Mon. Not. R. Astron. Soc., 458, 4162-4171 (2016/June-1)

Multiple stellar populations in the globular cluster M3 (NGC 5272): a Stromgren perspective.

MASSARI D., LAPENNA E., BRAGAGLIA A., DALESSANDRO E., CONTRERAS RAMOS R. and AMIGO P.

Abstract (from CDS):

We present Stromgren photometry of the Galactic Globular Cluster M3 to study its multiple generations phenomenon. The use of different colour-magnitude diagrams (CMDs) and especially of the notoriously efficient cy index allowed us to detect a double red giant branch in the cluster CMD. After decontamination from fore- and background sources, the two sequences turned out to be equally populated. The two components also show a bimodal radial distribution well corresponding to that predicted by numerical simulations for clusters living in an intermediate dynamical evolutive state and with a population with modified chemical composition that was born more centrally concentrated than the primordial. The analysis of high-resolution spectra quantitatively demonstrates that the two detected sequences correspond to the first (Na-poor) generation and the second (Na-rich) generation, thus confirming the importance of synergy between photometry and spectroscopy.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): techniques: photometric - stars: abundances - Hertzsprung-Russell and colour-magnitude diagrams - stars: Population II - globular clusters: general - globular clusters: individual: ngc5272

VizieR on-line data: <Available at CDS (J/MNRAS/458/4162): catalog.dat>

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 23

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2021.06.12-13:35:48

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