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

被引：28

作者：

Carretta, E. ^{[1
]}

Bragaglia, A. ^{[1
]}

D'Orazi, V. ^{[2
]}

Lucatello, S. ^{[2
,3
,4
]}

Gratton, R. G. ^{[2
]}

机构：

[1] INAF Osservatorio Astron Bologna, I-40127 Bologna, Italy

[2] INAF Osservatorio Astron Padova, I-35122 Padua, Italy

[3] Tech Univ Munich, D-85748 Garching, Germany

[4] Max Planck Inst Astrophys, D-85741 Garching, Germany

来源：

ASTRONOMY & ASTROPHYSICS | 2010年 / 519卷

关键词：

stars: abundances; stars: atmospheres; stars: population II; globular clusters: general; globular clusters: individual: NGC 3201; NITROGEN ABUNDANCES; GIANT STARS; TURN-OFF; ANTICORRELATIONS; POPULATIONS; PARAMETERS; EVOLUTION; NA;

D O I：

10.1051/0004-6361/201014996

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页数：3

共 26 条

[1] Helium in first and second-generation stars in globular clusters from spectroscopy of red giants [J].

Bragaglia, A. ;

Carretta, E. ;

Gratton, R. ;

D'Orazi, V. ;

Cassisi, S. ;

Lucatello, S. .

ASTRONOMY & ASTROPHYSICS, 2010, 519

[2] Na-O anticorrelation and HB I. The Na-O anticorrelation in NGC 2808 [J].

Carretta, E ;

Bragaglia, A ;

Gratton, RG ;

Leone, F ;

Recio-Blanco, A ;

Lucatello, S .

ASTRONOMY & ASTROPHYSICS, 2006, 450 (02) :523-U21

[3] Abundances in red giant stars of NGC 2808 and correlations between chemical anomalies and global parameters in globular clusters [J].

Carretta, E .

ASTRONOMICAL JOURNAL, 2006, 131 (03) :1766-1783

[4] Abundance analysis of turn-off and early subgiant stars in the globular cluster 47 Tuc (NGC 104) [J].

Carretta, E ;

Gratton, RG ;

Bragaglia, A ;

Bonifacio, P ;

Pasquini, L .

ASTRONOMY & ASTROPHYSICS, 2004, 416 (03) :925-940

[5] Properties of stellar generations in globular clusters and relations with global parameters [J].

Carretta, E. ;

Bragaglia, A. ;

Gratton, R. G. ;

Recio-Blanco, A. ;

Lucatello, S. ;

D'Orazi, V. ;

Cassisi, S. .

ASTRONOMY & ASTROPHYSICS, 2010, 516

[6] Na-O anticorrelation and HB VIII. Proton-capture elements and metallicities in 17 globular clusters from UVES spectra [J].

Carretta, E. ;

Bragaglia, A. ;

Gratton, R. ;

Lucatello, S. .

ASTRONOMY & ASTROPHYSICS, 2009, 505 (01) :139-155

[7] Na-O anticorrelation and HB VII. The chemical composition of first and second-generation stars in 15 globular clusters from GIRAFFE spectra [J].

Carretta, E. ;

Bragaglia, A. ;

Gratton, R. G. ;

Lucatello, S. ;

Catanzaro, G. ;

Leone, F. ;

Bellazzini, M. ;

Claudi, R. ;

D'Orazi, V. ;

Momany, Y. ;

Ortolani, S. ;

Pancino, E. ;

Piotto, G. ;

Recio-Blanco, A. ;

Sabbi, E. .

ASTRONOMY & ASTROPHYSICS, 2009, 505 (01) :117-138

[8] Carbon and nitrogen abundances in stars at the base of the red giant branch in M5 [J].

Cohen, JG ;

Briley, MM ;

Stetson, PB .

ASTRONOMICAL JOURNAL, 2002, 123 (05) :2525-2540

[9] Formation and dynamical evolution of multiple stellar generations in globular clusters [J].

D'Ercole, Annibale ;

Vesperini, Enrico ;

D'Antona, Francesca ;

McMillan, Stephen L. W. ;

Recchi, Simone .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2008, 391 (02) :825-843

[10] LITHIUM AND PROTON-CAPTURE ELEMENTS IN GLOBULAR CLUSTER DWARFS: THE CASE OF 47 TUC [J].

D'Orazi, Valentina ;

Lucatello, Sara ;

Gratton, Raffaele ;

Bragaglia, Angela ;

Carretta, Eugenio ;

Shen, Zhixia ;

Zaggia, Simone .

ASTROPHYSICAL JOURNAL LETTERS, 2010, 713 (01) :L1-L5

← 1 2 3 →