J/A+A/440/1153 Equivalent widths of 7 thin-disk stars (del Peloso+, 2005)
The age of the Galactic thin disk from Th/Eu nucleocosmochronology.
III. Extended sample.
del Peloso E.F., da Silva L., Arany-Prado L.I.
<Astron. Astrophys. 440, 1153 (2005)>
=2005A&A...440.1153D 2005A&A...440.1153D
ADC_Keywords: Stars, late-type ; Abundances, peculiar ; Equivalent widths
Keywords: Galaxy: disk - Galaxy: evolution - stars: late-type -
stars: fundamental parameters - stars: abundances
Abstract:
In Papers I (del Peloso et al. 2005, Cat. J/A+A/434/275) and II
(2005A&A...434..301D 2005A&A...434..301D) we performed the first determination of
the age of the Galactic thin disk from Th/Eu nucleocosmochronology.
The present work aimed at reducing the age uncertainty by expanding
the stellar sample with the inclusion of seven new objects. The Th and
Eu abundances used in the dating procedure were obtained through
spectral synthesis, and to perform the synthesis it was necessary to
know the atmospheric parameters and chemical abundances of
contaminating elements.
Description:
The file table5.dat contains all the equivalent widths of lines
used for atmospheric parameters and abundance determinations of
contaminating elements. Some lines have not been effectively used
in some stars; these have equivalent widths equal to 0.00 in the
file. All equivalent widths are presented in milli-Angstroms.
Objects:
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RA (2000) DE Designation(s) (column)
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00 18 41.9 -08 03 11 HD 1461 = HR 72 (EW1)
17 21 07.1 +01 26 35 HD 157089 = BD+01 3421 (EW2)
17 52 52.6 -41 59 47 HD 162396 = HR 6649 (EW3)
20 05 32.8 -67 19 15 HD 189567 = HR 7644 (EW4)
20 21 41.0 -49 59 58 HD 193307 = HR 7766 (EW5)
20 39 07.8 +10 05 10 HD 196755 = HR 7896 (EW6)
21 13 06.0 -16 54 51 HD 201918 = BD-17 6207 (EW7)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table5.dat 72 155 Equivalent widths for all lines and sample stars
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See also:
J/A+A/434/275 : Galactic thin disk [Th/Eu] abundance ratios (del Peloso+, 2005)
Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 8 F8.3 0.1nm Lambda Wavelength of line
10- 12 A3 --- Element Element symbol and ionization state
14- 17 F4.2 eV EP Lower excitation potential
19- 24 F6.3 --- Loggf Logarithm of oscillator strength
26- 30 F5.1 0.1pm EW0 Equivalent width in the Sun
32- 36 F5.1 0.1pm EW1 ?=0.00 Equivalent width in HD 1461
38- 42 F5.1 0.1pm EW2 ?=0.00 Equivalent width in HD 157089
44- 48 F5.1 0.1pm EW3 ?=0.00 Equivalent width in HD 162396
50- 54 F5.1 0.1pm EW4 ?=0.00 Equivalent width in HD 189567
56- 60 F5.1 0.1pm EW5 ?=0.00 Equivalent width in HD 193307
62- 66 F5.1 0.1pm EW6 ?=0.00 Equivalent width in HD 196755
68- 72 F5.1 0.1pm EW7 ?=0.00 Equivalent width in HD 201918
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Acknowledgements: E.F. del Peloso, epeloso(at)on.br
References:
del Peloso et al., Paper I 2005A&A...434..275D 2005A&A...434..275D, Cat. J/A+A/434/275
del Peloso et al., Paper II 2005A&A...434..301D 2005A&A...434..301D
(End) E.F. del Peloso [ON/MCT], Patricia Vannier [CDS] 12-Jul-2005