J/A+A/657/A66 List of FeI and FeII used for SteParSyn (Tabernero+, 2022)
SteParSyn: A Bayesian code to infer stellar atmospheric parameters using
spectral synthesis.
Tabernero H.M., Marfil E., Montes D., Gonzalez Hernandez J.I.
<Astron. Astrophys. 657, A66 (2022)>
=2022A&A...657A..66T 2022A&A...657A..66T (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics
Keywords: methods: data analysis - techniques: spectroscopic -
stars: atmospheres - stars: fundamental parameters - stars: late-type
Abstract:
SteParSyn is an automatic code written in Python 3.X designed to infer
the stellar atmospheric parameters Teff, log(g), and [Fe/H] of
FGKM-type stars following the spectral synthesis method.
We present a description of the SteParSyn code and test its
performance against a sample of late-type stars that were observed
with the HERMES spectrograph mounted at the 1.2-m Mercator Telescope.
This sample contains 35 late-type targets with well-known stellar
parameters determined independently from spectroscopy. The code is
available to the astronomical community in a GitHub repository.
SteParSyn uses a Markov chain Monte Carlo (MCMC) sampler to explore
the parameter space by comparing synthetic model spectra generated on
the fly to the observations. The synthetic spectra are generated with
an spectral emulator. Results: We computed Teff, log(g), and [Fe/H]
for our sample stars and discussed the performance of the code. We
calculated an internal scatter for these targets of -12±117K in
Teff, 0.04±0.14dex in log(g), and 0.05±0.09dex in [Fe/H]. In
addition, we find that the log(g) values obtained with SteParSyn are
consistent with the trigonometric surface gravities to the 0.1dex
level. Finally, SteParSyn can compute stellar parameters that are
accurate down to 50K, 0.1dex, and 0.05dex for Teff, log(g), and
[Fe/H] for stars with vsini≤30km/s.
Description:
Lines of FeI and FeII lines and spectral ranges employed.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea5.dat 42 326 Lines of FeI and FeII lines and
spectral ranges employed
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Byte-by-byte Description of file: tablea5.dat
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Bytes Format Units Label Explanations
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1- 7 F7.2 0.1nm b_lambda [4806/7912] Start of the wavelength range
9- 15 F7.2 0.1nm B_lambda [4811/7915] End of the wavelength range
17- 24 F8.3 0.1nm lambda [4808/7913] Central wavelength of the line
26- 27 A2 --- El Element
29 I1 --- Ion [1/2] Ionsation stage,
1: neutral, 2: singly ionised
31- 35 F5.3 eV Elow Lower excitation potential
37- 42 F6.3 [-] loggf [-5.97/0.52] Oscillator strength
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Acknowledgements:
Hugo Tabernero, htabernero(at)cab.inta-csic.es
(End) Patricia Vannier [CDS] 19-Oct-2021