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J/AJ/113/1073             Abundances in Cepheid Variables (Fry+  1997)

Chemical Abundances of Galactic Cepheid Variables That Calibrate the P-L Relation Fry A.M., Carney B.W. <Astron. J. 113, 1073 (1997)> =1997AJ....113.1073F
ADC_Keywords: Stars, variable ; Equivalent widths Abstract: We have completed spectroscopic studies of 23 Galactic cepheids to determine possible metallicity effects on measuring the zero point of the P-L relation. We find a spread of 0.4dex in [Fe/H], which is not the result of either observational scatter or of a metallicity gradient within the Galactic disk. We find a smaller, less significant spread of 0.2dex in [α/Fe]. Our results are robust, determined by constancy of [Fe/H] derived at differing temperatures throughout the pulsational cycle, and abundances of two dwarfs compared to U Sgr in the cluster M25. We discuss briefly the effect of metallicity on the P-L relation. We also argue that EV Sct and QZ Nor are overtone pulsators, and that the latter is not a member of the cluster NGC 6067. (Copyright) 1997 American Astronomical Society. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2 53 7719 Equivalent widths of Fe I and Fe II table3 53 1073 Equivalent widths of Alpha-peak elements table2.tex 104 1296 AASTeX version of Tables 2a to 2o table3.tex 80 223 AASTeX version of Tables 3a to 3d
Byte-by-byte Description of file: table2 table3
Bytes Format Units Label Explanations
1- 12 A12 --- Name Star name 14- 18 F5.3 --- phi [0/1[? Phase 20- 26 F7.2 0.1nm lambda Line wavelength 28- 34 F7.2 0.1pm EW ? Equivalent width 36- 40 A5 --- Ion Ion designation 42- 47 F6.3 --- log(gf) ? log of oscillator strength 50- 53 F4.2 eV Chi ? Chi value
Origin :AAS CD-ROM series, Volume 8, 1997 Lee Brotzman [ADS] 10-Apr-1997
(End) Patricia Bauer [CDS] 04-Jul-1997
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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