J/AN/341/125 Line list (Cowley+, 2020)
Differential abundance analysis of Procyon and θ Sculptoris.
Comparison with abundance patterns of solar-like pairs.
Cowley C.R., Yuce L., Bord D.J.
<Astron. Nachrichten 341, 125-132 (2020)>
=2020AN....341..125C 2020AN....341..125C (SIMBAD/NED BibCode)
ADC_Keywords: Atomic physics
Keywords: stars: abundances - stars: solar-type - stars: individual: Procyon -
stars: individual: theta Scl
Abstract:
The precision differential abundance (PDA) technique is applied to the
mid-F stars Procyon and Scl using spectra from the ESO UVESPOP
library. We relate PDA patterns to endogenous processes related to
condensation or to exogenous processes connected to Galactic chemical
evolution (GCE). We employ one-dimensional LTE models, but emphasize
the use of weaker lines (≤20mÅ) than are typically used in such
studies. We compare our results with PDAs of solar-type stars.
Abundances and PDAs are determined for 28 elements: C, N, O, Na, Mg,
Al, Si, S, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Y, Zr, Ba, La,
Ce, Nd, Sm, Eu, and Gd. A plot of PDAs ( Scl minus Procyon) vs. Z
shows a highly significant correlation. Moreover, local substructure
of the plot for the elements Ca-Zn and neutron-addition elements is
similar to that which can be found for solar twins. Our PDA vs. Z plot
structural similarity to plots that can be made from the extensive
work of Bedell et al. (2018). That PDA structure and substructure is
clearly a function of age.
Description:
Data for individual lines used in the paper.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 59 145 Individual analyzed lines
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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 Species
8- 12 F5.2 --- El Element code = element number + charge/100
15- 22 F8.3 0.1nm lambda Wavelength
26- 29 F4.1 0.1pm EW Equivalent width
32- 35 F4.2 [0.1pm] logEW log of equivalent width
37- 42 F6.3 [-] loggf Oscillator strength
45- 50 F6.3 eV EP Excitation potential
53- 59 F7.3 [-] log(El/Ntot) Abundance, log(El/Ntot)=log(El/H)-0.036
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Acknowledgements:
Charles R. Cowley, cowley(at)umich.edu
(End) Patricia Vannier [CDS] 05-Feb-2020