J/A+A/525/A63 Abundances in Ba stars (Allen+, 2011)
Mn, Cu, and Zn abundances in barium stars and their correlations with neutron
capture elements.
Allen D.M., Porto de Mello G.F.
<Astron. Astrophys. 525, A63 (2011)>
=2011A&A...525A..63A 2011A&A...525A..63A
ADC_Keywords: Stars, peculiar ; Abundances
Keywords: stars: chemically peculiar - stars: abundances -
techniques: spectroscopic - stars: AGB and post-AGB -
stars: atmospheres
Abstract:
We present abundances of Mn, Cu, Zn, and various light and heavy
elements for a sample of barium and normal giant stars, and present
correlations between abundances contributed to different degrees by
the weak-s, main-s, and r-processes of neutron capture, between
Fe-peak elements and heavy elements. All spectra for the sample stars
were obtained with the 1.52m telescope at ESO, La Silla, using the
Fiber Fed Extended Range Optical Spectrograph (FEROS). FEROS spectra
have a constant resolving power of R=48000 from 3600Å to
9200Å. The stellar sample targeted in our study includes eight mild
and classical barium stars and six normal giants, with a spectral S/N
ratio ranging from 200 to 450 in the visible range.
Description:
Table 2 contains the lines, atomic constants, equivalent widths, and
abundance results for the elements other than iron, and Table 3
contains the average for the abundances and their uncertainties.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 56 40 Stars positions
table2.dat 75 1670 Lines, atomic constants, equivalent widths,
and abundances of stars
table3.dat 50 1023 Average of abundances and their uncertainties
for stars and the Sun
refs.dat 166 34 References
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See also:
II/192 : UBV Photometry of Barium Stars (Watanabe+ 1993)
V/81 : Taxonomy of Barium Stars (Lu 1991)
J/A+A/319/881 : Ba II strength of barium stars (Gomez+ 1997)
J/A+A/321/L9 : Barium stars in the HR diagram (Bergeat+ 1997)
J/A+A/326/722 : HIPPARCOS Ba stars (Mennessier+ 1997)
J/A+A/372/245 : Infrared properties of barium stars (Chen+, 2001)
J/AZh/79/909 : Chemical abundances in barium stars (Boyarchuk+, 2002)
J/AZh/80/704 : Studies of classical barium stars (Antipova+, 2003)
J/A+A/454/895 : Abundances of 26 barium stars. I. (Allen+, 2006)
J/A+A/454/917 : Abundances of 26 barium stars. II. (Allen+, 2006)
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Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name HD, HR, or BD number
12- 13 I2 h RAh Simbad Hour of Right Ascension (J2000.0)
15- 16 I2 min RAm Simbad Minute of Right Ascension (J2000.0)
18- 21 F4.1 s RAs Simbad Second of Right Ascension (J2000.0)
23 A1 --- DE- Simbad Sign of the Declination (J2000.0)
24- 25 I2 deg DEd Simbad Degree of Declination (J2000.0)
27- 28 I2 arcmin DEm Simbad Arcminute of Declination (J2000.0)
30- 31 I2 arcsec DEs Simbad Arcsecond of Declination (J2000.0)
34- 39 F6.3 mag Bmag Simbad B band magnitude
41- 46 F6.3 mag Vmag Simbad V band magnitude
48- 56 A9 --- SpType Simbad MK spectral type
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 10 A10 --- Name HD, HR, or BD number
11 A1 --- n_Name [*] * indicates normal star
14- 19 A6 --- Ion Element code and ionization state
20 A1 --- n_Ion [*] * indicates multiple line
23- 30 F8.3 0.1nm lambda Wavelength of the line
31 A1 --- n_lambda [abc] Molecular line (1)
35- 39 F5.3 eV EP ?=- Lower excitation potential
42- 48 F7.3 [-] loggf ?=- Logarithm of oscillator strength
51- 55 A5 --- r_loggf References for oscillator strength (refs.dat)
59- 61 I3 0.1pm EW ?=- Equivalent width for the star
64- 68 F5.2 [-] logEps ?=- Elemental abundance (=log(nX/nH)+12)
71- 75 F5.2 [-] [X/FeII] ?=- Abundance [X/Fe] (logarithmic scale)
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Note (1): Notes as follows:
a = representative line for CH (G band)
b = representative line for C2
c = representative line for CN
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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- 10 A10 --- Name HD, HR, or BD number
11 A1 --- n_Name [*] * indicates normal star
15- 19 A5 --- Ion Element code and ionization state
21 A1 --- l_logEps Limit flag on logEps
22- 26 F5.2 --- logEps ?=- Average of logEps (=log(nX/nH) + 12)
28 A1 --- l_[X/Fe] Limit flag on [X/Fe]
29- 33 F5.2 [-] [X/Fe] ?=- Average of the overabundance of the
element X relative to Fe
36- 39 F4.2 --- e_logEps ?=- Uncertainty on logEps
42- 45 F4.2 [-] e_[X/Fe] ?=- Uncertainty on [X/Fe]
49- 50 I2 --- Ref ? Reference for solar abundance (in refs.dat)
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- Ref Reference number
4- 22 A19 --- BibCode BibCode
24- 45 A22 --- Aut Author's name
48-166 A119 --- Com Comments
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Acknowledgements:
Dinah Moreira Allen, dimallen(at)astro.iag.usp.br
(End) Patricia Vannier [CDS] 01-Oct-2010