J/A+A/506/729 Abundances in globular cluster Pal 3 (Koch+, 2009)
All quiet in the outer halo: chemical abundances in the globular cluster Pal 3.
Koch A., Cote P., McWilliam A.
<Astron. Astrophys. 506, 729 (2009)>
=2009A&A...506..729K 2009A&A...506..729K
ADC_Keywords: Clusters, globular ; Abundances ; Stars, giant
Keywords: stars: abundances - Galaxy: abundances - Galaxy: evolution -
Galaxy: halo - globular clusters: individual: Pal 3
Abstract:
Chemical abundances of 25 alpha-, iron peak-, and neutron-capture
elements in the remote (R=90kpc) outer halo globular cluster have been
determined for 4 red giants observed with the Magellan/MIKE
spectrograph and from integrated spectra of 19 stars obtained with the
Keck/HIRES instrument. The resulting abundance ratios show that Pal 3
is very similar to globular clusters of the inner halo and very
dissimilar from dwarf spheroidal galaxy stars. Its neutron capture
element ratios are compatible with a pure r-process enrichment.
Objects:
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RA (2000) DE Designation(s)
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10 05 31.0 +00 04 15 Pal 3 = Cl Palomar 3
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 52 19 Properties of the targeted member stars
table3.dat 57 303 Linelist for the 4 red giants targeted with
Magellan/MIKE (individual equivalent widths)
table4.dat 50 230 Linelist for the 19 red giants targeted with
Keck/HIRES (coadded equivalent widths)
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See also:
J/AJ/117/247 : Ages for globular clusters in the halo (Stetson+, 1999)
J/A+A/448/171 : BV photometry of 3 globular clusters (Hilker+, 2006)
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 7 A7 --- Name Star Name
8 A1 --- n_Name [b] AGB star (1)
9- 10 I2 h RAh Right ascension (J2000)
12- 13 I2 min RAm Right ascension (J2000)
15- 19 F5.2 s RAs Right ascension (J2000)
21 A1 --- DE- Declination sign (J2000)
22- 23 I2 deg DEd Declination (J2000)
25- 26 I2 arcmin DEm Declination (J2000)
28- 31 F4.1 arcsec DEs Declination (J2000)
33- 37 F5.2 mag V0mag Dereddened V magnitude
39- 42 F4.2 mag (B-V)0 Dereddened B-V colour index
44- 47 F4.2 mag (V-K)0 ?=- Dereddened V-K colour index
49 I1 --- S/N Signal-to-noise ratio
51- 52 I2 --- S/N2 ? Signal-to-noise ratio from the MIKE spectra
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Note (1): AGB star (Hilker 2006, Cat. J/A+A/448/171)
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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- 5 A5 --- Ion Element and ionization stage
(I for neutral, II for ionized species)
10- 16 F7.2 0.1nm WL Wavelength in Angstrom
20- 23 F4.2 eV EP Excitation Potential
27- 32 F6.3 [-] loggf log of oscillator strength
36- 38 I3 0.1pm EW2 ? Equivalent widths in star Pal3-2
39 A1 --- n_EW2 [s] EW2 derived from spectral synthesis (1)
42- 44 I3 0.1pm EW3 ? Equivalent widths in star Pal3-3
45 A1 --- n_EW3 [s] EW3 derived from spectral synthesis (1)
48- 50 I3 0.1pm EW5 ? Equivalent widths in star Pal3-5
51 A1 --- n_EW5 [s] EW5 derived from spectral synthesis (1)
54- 56 I3 0.1pm EW6 ? Equivalent widths in star Pal3-6
57 A1 --- n_EW6 [s] EW6 derived from spectral synthesis (1)
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Note (1): "s" indicates that the abundance was derived from spectral
synthesis rather than equivalent width fitting
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 5 A5 --- Ion Element and ionization stage
(I for neutral, II for ionized species)
10- 16 F7.2 0.1nm WL Wavelengths in Angstrom
20- 23 F4.2 eV EP Excitation potential
27- 32 F6.3 [-] loggf log of oscillator strength
36- 38 I3 0.1pm EWall ? Coadded equivalent widths of all 19 stars
42- 44 I3 0.1pm EW2346 ? Coadded equivalent widths of Pal3-2,3,4,6
48- 50 I3 0.1pm EWno2346 ? Coadded equivalent widths of all stars but
Pal3-2,3,4,6
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Acknowledgements:
Andreas Koch, ak326(at)astro.le.ac.uk
(End) Andreas Koch [Univ. of Leicester, UK], Patricia Vannier [CDS] 10-Sep-2009