J/A+A/587/A6 Linelist of 14 Galactic post-AGB stars (De Smedt+, 2016)
Detailed homogeneous abundance studies of 14 Galactic s-process enriched
post-AGB stars: In search of lead (Pb).
De Smedt K., Van Winckel H., Kamath D., Siess L., Goriely S.,
Karakas A.I., Manick R.
<Astron. Astrophys. 587, A6 (2016)>
=2016A&A...587A...6D 2016A&A...587A...6D (SIMBAD/NED BibCode)
ADC_Keywords: Stars, giant ; Abundances ; Spectroscopy
Keywords: stars: AGB and post-AGB - stars: abundances -
binaries: spectroscopic - stars: evolution
Abstract:
This paper is part of a larger project in which we systematically
study the chemical abundances of Galactic and extragalactic
post-asymptotic giant branch (post-AGB) stars. The goal at large is to
provide improved observational constraints to the models of the
complex interplay between the AGB s-process nucleosynthesis and the
associated mixing processes.
Aims. Lead (Pb) is the final product of the s-process nucleosynthesis
and is predicted to have large overabundances with respect to other
s-process elements in AGB stars of low metallicities. However, Pb
abundance studies of s-process enriched post-AGB stars in the
Magellanic Clouds show a discrepancy between observed and predicted Pb
abundances. The determined upper limits based on spectral studies are
much lower than what is predicted. In this paper, we focus
specifically on the Pb abundance of 14 Galactic s-process enhanced
post-AGB stars to check whether the same discrepancy is present in the
Galaxy as well. Among these 14 objects, two were not yet subject to a
detailed abundance study in the literature. We apply the same method
to obtain accurate abundances for the 12 others. Our homogeneous
abundance results provide the input of detailed spectral synthesis
computations in the spectral regions where Pb lines are located.
We used high-resolution UVES and HERMES spectra for detailed spectral
abundance studies of our sample of Galactic post-AGB stars. None of
the sample stars display clear Pb lines, and we only deduced upper
limits of the Pb abundance by using spectrum synthesis in the spectral
ranges of the strongest Pb lines.
Description:
We used the UVES spectrograph mounted on the Very Large Telescope
(VLT) at the European Southern Observatory (ESO), and the HERMES
spectrograph mounted on the 1.2m Mercator telescope to obtain
high-resolution spectra with high signal-to-noise (S/N) of 14 Galactic
post-AGB stars of the Large Magellanic Cloud. We perform an extensive
detailed abundance analysis on the basis of these spectra. Here we
provide the linelists of all objects with the same layour: the
identification is given by the proton-number of the chemical element.
For lines coming from ionised lines, we add 0.1 to the proton number;
the wavelength is given in rest in air in Angstrom units; the
excitation potential (eV); the used oscillator strength and finally
the measured equivalent width (mÅ).
We also provide the normalised spectra obtained with UVES and with
HERMES in fits format.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
stars.dat 151 14 List of studied stars
i05113.dat 36 127 Linelist of IRAS 05113+1347
i05341.dat 36 198 Linelist of IRAS 05341+0852
i06530.dat 36 211 Linelist of IRAS 06530-0213
i07134.dat 36 384 Linelist of IRAS 07134+1005
i07430.dat 36 194 Linelist of IRAS 07430+1115
i08143b.dat 36 178 Linelist of IRAS 08143-4406 part I
i08143r.dat 36 244 Linelist of IRAS 08143-4406 part II
i08281.dat 36 225 Linelist of IRAS 08281-4850
i13245.dat 36 180 Linelist of IRAS 13245-5036
i14325.dat 36 277 Linelist of IRAS 14325-6428
i14429.dat 36 230 Linelist of IRAS 14429-4539
i17279.dat 36 232 Linelist of IRAS 17279-1119
i19500.dat 36 263 Linelist of IRAS 19500-1709
i22223.dat 36 275 Linelist of IRAS 22223+4327
i22272.dat 36 197 Linelist of IRAS 22272+5435
fits/* . 40 Individual spectra fits files
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See also:
J/A+A/469/799 : Torun catalog of post-AGB & related objects (Szczerba+ 2007)
J/MNRAS/447/1673 : Galactic post-AGB stars distances (Vickers+, 2015)
Byte-by-byte Description of file: stars.dat
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Bytes Format Units Label Explanations
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1- 15 A15 --- Name IRAS name
17- 18 I2 h RAh Simbad Right ascension (J2000.0)
20- 21 I2 min RAm Simbad Right ascension (J2000.0)
23- 27 F5.2 s RAs Simbad Right ascension (J2000.0)
29 A1 --- DE- Simbad Declination sign (J2000.0)
30- 31 I2 deg DEd Simbad Declination (J2000.0)
33- 34 I2 arcmin DEm Simbad Declination (J2000.0)
36- 39 F4.1 arcsec DEs Simbad Declination (J2000.0)
41- 45 F5.2 mag Bmag ? Simbad B band magnitude
47- 51 F5.2 mag Vmag ? Simbad V band magnitude
53- 61 A9 --- SpType Simbad MK spectral type
63- 73 A11 --- FileName Name of the table with spectroscopy
75- 85 A11 --- FileName2 Name of the second table with spectroscopy
for IRAS 08143-4406
87- 97 A11 --- FileName3 Name of fits UVES blue (437nm setting) or
HERMES spectrum file in subdirectory fits (1)
99-110 A12 --- FileName4 Name of fits UVES redl (580nm setting) spectrum
file in subdirectory fits (1)
112-123 A12 --- FileName5 Name of fits UVES redu (580nm setting) spectrum
file in subdirectory fits (1)
125-137 A13 --- FileName6 Name of fits UVES redl (860nm setting) spectrum
file in subdirectory fits (1)
139-151 A13 --- FileName7 Name of fits UVES redu (860nm setting) spectrum
file in subdirectory fits (1)
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Note (1): Fits names files means:
iNNNNNb.fit : UVES spectrum blue ccd (437nm setting)
iNNNNNrl.fit : UVES spectrum redl ccd (580nm setting)
iNNNNNru.fit : UVES spectrum redu ccd (580nm setting)
iNNNNNirl.fit : UVES spectrum redl ccd (860nm setting)
iNNNNNiru.fit : UVES spectrum redu ccd (860nm setting)
iNNNNNf.fit : HERMES spectrum
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Byte-by-byte Description of file: i*.dat
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Bytes Format Units Label Explanations
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1- 5 F5.1 --- Ion Identification:
Mass number+0.1*ionisation stage
7- 15 F9.3 0.1nm lambda Wavelength in rest frame (Å)
17- 22 F6.2 eV chi Excitation potential χ
24- 29 F6.2 [-] loggf Oscillator strength
31- 36 F6.1 0.1pm EW Equivalenth width (mÅ)
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Acknowledgements:
Kenneth De Smedt, Kenneth.DeSmedt(at)ster.kuleuven.be
(End) Patricia Vannier [CDS] 26-Dec-2015