Volume 519, September 2010
|Number of page(s)||3|
|Section||Galactic structure, stellar clusters, and populations|
|Published online||15 September 2010|
The radial distribution of stars of different stellar generations in the globular cluster NGC 3201 *
INAF-Osservatorio Astronomico di Bologna, via Ranzani 1, 40127
Bologna, Italy e-mail: email@example.com
2 INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, 35122 Padova, Italy
3 Excellence Cluster Universe, Technische Universität München, Boltzmannstr. 2, 85748 Garching, Germany
4 Max-Planck-Institut für Astrophysik, 85741 Garching, Germany
Accepted: 24 June 2010
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.
Key words: stars: abundances / stars: atmospheres / stars: population II / globular clusters: general / globular clusters: individual: NGC 3201
© ESO, 2010
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