J/A+A/505/117 Abundances of red giants in 15 globular clusters (Carretta+, 2009)
Na-O anticorrelation and HB.
VII. The chemical composition of first and second generation stars in 15
globular clusters from GIRAFFE spectra.
Carretta E., Bragaglia A., Gratton R.G., Lucatello S., Catanzaro G.,
Leone F., Bellazzini M., Claudi R., D'Orazi V., Momany Y., Orolani S.,
Pancino E., Piotto G., Recio-Blanco A., Sabbi E.
<Astron. Astrophys. 505, 117 (2009)>
=2009A&A...505..117C 2009A&A...505..117C
ADC_Keywords: Clusters, globular ; Stars, giant ; Abundances
Keywords: stars: abundances - stars: atmospheres - stars: Population II -
globular clusters: general
Abstract:
We present abundances of Fe, Na and O for 1409 red giant stars in 15
galactic globular clusters (GCs), derived from the homogeneous
analysis of high resolution FLAMES/GIRAFFE spectra. The program
clusters cover a range in metallicity from [Fe/H]=-2.4dex to
[Fe/H]=-0.4dex, with a wide variety of global parameters (morphology
of the horizontal branch, mass, concentration, etc.). For all clusters
we find the Na-O anticorrelation, classical signature of the operation
of proton-capture reactions in H burning at high temperature in a
previous generation of more massive stars now extinct. Using
quantitative criteria (from the morphology and extension of the Na-O
anticorrelation), we can define three different components of the
stellar population in GCs.
Description:
Coordinates, magnitudes (B, V, K2mass), heliocentric RVG, atmospheric
parameters, abundances of Fe, Na, O are presented for 15 of our sample
of 19 galactic GCs. Observations were done using two GIRAFFE gratings,
HR11 (for NaI 6154-6160Å lines) and HR13 (for [OI] 6300Å line).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 102 1529 ID, positions, magnitudes and RVs for stars
in 15 GCs
table3.dat 73 1529 atmospheric parameters, FeI, FeII for stars in
15 GCs
table6.dat 60 1529 [O/Fe], [Na/Fe] for stars in 15 GCs
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See also:
J/A+A/455/271 : Abundances of red giants in NGC 6441 (Gratton+, 2006)
J/A+A/464/927 : Abundances of red giants in NGC 6752 (Carretta+, 2007)
J/A+A/464/953 : Abundances of red giants in NGC 6441 (Gratton+, 2007)
J/A+A/464/939 : Abundances of red giants in NGC 6218 (Carretta+, 2007)
J/A+A/464/967 : Abundances of red giants in NGC 6388 (Carretta+, 2007)
J/A+A/505/139 : Abundances of red giants in 17 GC (Carretta+, 2009)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [NGC]
5- 8 I4 --- NGC NGC number
10- 16 I7 --- ID Star ID
19- 20 I2 h RAh Right ascension (J2000.0)
22- 23 I2 min RAm Right ascension (J2000.0)
25- 30 F6.3 s RAs Right ascension (J2000.0)
32 A1 --- DE- Declination sign (J2000.0)
33- 34 I2 deg DEd Declination (J2000.0)
36- 37 I2 arcmin DEm Declination (J2000.0)
39- 43 F5.2 arcsec DEs Declination (J2000.0)
46- 51 F6.3 mag Bmag ?=0 Johnson B magnitude
53- 58 F6.3 mag Vmag Johnson V magnitude
60- 65 F6.3 mag Icmag ?=0.00 Cousins I magnitude
67- 72 F6.3 mag Kmag ?=99.999 2MASS Ks magnitude
75- 81 F7.2 km/s RV11 ?=999.99 RV in grating HR11
84- 90 F7.2 km/s RV13 ?=999.99 RV in grating HR13
94-102 A9 --- Notes Obs in HR11 and/or HR13
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [NGC]
5- 8 I4 --- NGC NGC number
10- 16 I7 --- ID Star ID
20- 23 I4 K Teff Effective temperature
25- 28 F4.2 [cm/s2] logg Gravity
30- 34 F5.2 [Sun] [A/H] Input metallicity
36- 39 F4.2 km/s vt Micorturbulent velocity
42- 43 I2 --- o_[FeI/H] Number of FeI lines
45- 50 F6.3 [Sun] [FeI/H] ?=99.999 [FeI/H] abundance
52- 56 F5.3 [Sun] e_[FeI/H] ?=9.999 rms uncertainty on [FeI/H]
60 I1 --- o_[FeII/H] Number of FeII lines
62- 67 F6.3 [Sun] [FeII/H] ?=99.999 [FeII/H] abundance
69- 73 F5.3 [Sun] e_[FeII/H] ?=9.999 rms uncertainty on [FeII/H]
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- --- [NGC]
5- 8 I4 --- NGC NGC number
10- 16 I7 --- ID Star ID
21 I1 --- o_[O/Fe] Number of O lines
25- 30 F6.3 [Sun] [O/Fe] ?=99.999 [O/Fe] abundance
33- 37 F5.3 [Sun] e_[O/Fe] ?=9.999 rms uncertainty on [Na/Fe]
41 I1 --- o_[Na/Fe] Number of Na lines
43- 48 F6.3 [Sun] [Na/Fe] ?=99.999 [Na/Fe] abundance
51- 55 F5.3 [Sun] e_[Na/Fe] ?=9.999 rms uncertainty on [Na/Fe]
58 I1 --- HR [1/3] Which grating: 1=HR13 only,
2=HR11 and HR13, 3=HR11 only
60 A1 --- l_[O/Fe] [0/1] Limit flag on [O/Fe]: 0=limit, 1=measure
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Acknowledgements:
Eugenio Carretta, eugenio.carretta(at)oabo.inaf.it
References:
Carretta et al., Paper I NGC 2808 2006A&A...450..523C 2006A&A...450..523C
Carretta et al., Paper II NGC 6752 2007A&A...464..927C 2007A&A...464..927C, Cat. J/A+A/464/927
Gratton et al., Paper III NGC 6441 2006A&A...455..271G 2006A&A...455..271G, Cat. J/A+A/455/271
Carretta et al., Paper IV NGC 6218 2007A&A...464..939C 2007A&A...464..939C, Cat. J/A+A/464/939
Gratton et al., Paper V NGC 6441 2007A&A...464..953G 2007A&A...464..953G, Cat. J/A+A/464/953
Carretta et al., Paper VI NGC 6388 2007A&A...464..967C 2007A&A...464..967C, Cat. J/A+A/464/967
Carretta et al., Paper VIII 17 GC 2009A&A...505..139C 2009A&A...505..139C, Cat. J/A+A/505/139
History:
* 17-Sep-2009: Original version
* 07-Apr-2010: in table6, the labels "Na/Fe" and "O/Fe" have been
switched (message from first author Eugenio Carretta)
* 05-May-2015: the limit flag in table6 refers to O abundance
(was previously indicated as a limit for [Na/Fe])
(End) E. Carretta [INAF-Oss. Astr. Bologna, Italy], P. Vannier [CDS] 17-Sep-2009