The radial distribution of stars of different stellar generations in the globular cluster NGC 3201

E. Carretta; A. Bragaglia; V. D'Orazi; S. Lucatello; R. G. Gratton

doi:10.1051/0004-6361/201014996

The radial distribution of stars of different stellar generations in the globular cluster NGC 3201

E. Carretta^*, A. Bragaglia, V. D'Orazi, S. Lucatello, R. G. Gratton

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

We study the radial distribution of stars from different stellar generations in the globular cluster NGC 3201. From recently published multicolour photometry, a radial dependence of the location of stars on the giant branch was found. We coupled the photometric information to our sample of 100 red giants with Na, O abundances and with known classification as first or second-generation stars. We find that giants stars of the second generation in NGC 3201 show a tendency to be more centrally concentrated than stars of the first generation, supporting less robust results from our spectroscopic analysis.

Original language	English
Article number	A71
Pages (from-to)	1-3
Number of pages	3
Journal	Astronomy and Astrophysics
Volume	519
Issue number	8
DOIs	https://doi.org/10.1051/0004-6361/201014996
Publication status	Published - 15 Sept 2010
Externally published	Yes

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abstract = "We study the radial distribution of stars from different stellar generations in the globular cluster NGC 3201. From recently published multicolour photometry, a radial dependence of the location of stars on the giant branch was found. We coupled the photometric information to our sample of 100 red giants with Na, O abundances and with known classification as first or second-generation stars. We find that giants stars of the second generation in NGC 3201 show a tendency to be more centrally concentrated than stars of the first generation, supporting less robust results from our spectroscopic analysis.",

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AU - Bragaglia, A.

AU - D'Orazi, V.

AU - Lucatello, S.

AU - Gratton, R. G.

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N2 - We study the radial distribution of stars from different stellar generations in the globular cluster NGC 3201. From recently published multicolour photometry, a radial dependence of the location of stars on the giant branch was found. We coupled the photometric information to our sample of 100 red giants with Na, O abundances and with known classification as first or second-generation stars. We find that giants stars of the second generation in NGC 3201 show a tendency to be more centrally concentrated than stars of the first generation, supporting less robust results from our spectroscopic analysis.

AB - We study the radial distribution of stars from different stellar generations in the globular cluster NGC 3201. From recently published multicolour photometry, a radial dependence of the location of stars on the giant branch was found. We coupled the photometric information to our sample of 100 red giants with Na, O abundances and with known classification as first or second-generation stars. We find that giants stars of the second generation in NGC 3201 show a tendency to be more centrally concentrated than stars of the first generation, supporting less robust results from our spectroscopic analysis.

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ER -

The radial distribution of stars of different stellar generations in the globular cluster NGC 3201

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