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J/A+A/449/127   Chemical abundances of 32 mildly metal-poor stars (Zhang+, 2006)

Chemical abundances of 32 mildly metal-poor stars. Zhang H.W., Zhao G. <Astron. Astrophys. 449, 127 (2006)> =2006A&A...449..127Z
ADC_Keywords: Stars, dwarfs ; Stars, metal-deficient ; Abundances, peculiar Keywords: stars: abundances - stars: kinematics - Galaxy: disk Abstract: We present photospheric abundances of the O, Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Ni, and Ba elements for 32 mildly metal-poor stars with [Fe/H]~-0.7. High resolution and high signal-to-noise ratio spectra were obtained with the Coude Echelle Spectrograph mounted on the 2.16m telescope at the National Astronomical Observatories (Xinglong, China) on 10 nights during 1999. Effective temperatures were estimated from colour indices, and surface gravities from Hipparcos parallaxes. Stellar abundances were determined from a differential LTE analysis. Our element abundance results extend and confirm previous works. The oxygen and other alpha-elements (Mg, Si, Ca, and Ti) abundances of thin and thick disk stars show distinct trends at [Fe/H]←0.60. The [Al/Fe] behaviour is exactly as an alpha-element, although the separation for [Na/Fe] of thin and thick disk stars is not clear. The elements V, Cr, and Ni follow Fe very closely, and there is no offset between thin and thick disk stars, but the Sc and Mn abundance trends of the thin and thick disk stars are different, and [Ba/Fe] of thin disk and thick disk stars shows different behaviour. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file stars.dat 67 32 Star positions and magnitudes (from Simbad) table1.dat 45 5344 Equivalent widths data table3.dat 93 32 Abundances
See also: J/A+A/440/321 : Chemical abundances in 43 metal-poor stars (Jonsell+, 2005) J/A+A/425/671 : Equivalent widths of 10 metal-poor halo stars (Bai+, 2004) J/A+A/404/187 : Equivalent widths for metal-poor stars (Gratton+, 2003) J/A+A/403/1105 : Extremely metal-poor giants equivalent widths (Francois+ 2003) J/A+A/390/235 : OI & FeII equivalent widths in metal-poor stars (Nissen+ 2002) J/A+A/354/169 : Metal-poor field stars abundances (Gratton+, 2000) J/A+A/305/245 : Fe I in metal-poor stars (Magain+, 1996) J/A+A/290/885 : Abundances of very metal-poor stars (Primas+, 1994) Byte-by-byte Description of file: stars.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Star name 12- 13 I2 h RAh Right ascension (J2000.0) 15- 16 I2 min RAm Right ascension (J2000.0) 18- 21 F4.1 s RAs Right ascension (J2000.0) 23 A1 --- DE- Declination sign (J2000.0) 24- 25 I2 deg DEd Declination (J2000.0) 27- 28 I2 arcmin DEm Declination (J2000.0) 30- 31 I2 arcsec DEs Declination (J2000.0) 35- 39 F5.2 mag Bmag B magnitude 41- 45 F5.2 mag Vmag V magnitude 47- 67 A21 --- SpType MK spectral type
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Star name 11- 18 F8.3 0.1nm Lambda Wavelength 20- 21 A2 --- El Element 22 A1 --- Ion Ionisation 25- 28 F4.2 eV LEP Lower excitation potential 30- 35 F6.3 --- loggf log of oscillator strength 37- 39 F3.1 --- Egamma Correction factor to Unsoeld broadening 41- 45 F5.1 0.1pm EW ?=- Equivalent width
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 9 A9 --- Name Star name 11- 15 F5.2 [Sun] [Fe/H] Abundance [Fe/H] 17- 21 F5.2 [Sun] [O/Fe] Abundance [O/Fe] 23- 27 F5.2 [Sun] [Mg/Fe] Abundance [Mg/Fe] 29- 33 F5.2 [Sun] [Si/Fe] Abundance [Si/Fe] 35- 39 F5.2 [Sun] [Ca/Fe] Abundance [Ca/Fe] 41- 45 F5.2 [Sun] [Ti/Fe] ? Abundance [Ti/Fe] 47- 51 F5.2 [Sun] [Na/Fe] ? Abundance [Na/Fe] 53- 57 F5.2 [Sun] [Al/Fe] ? Abundance [Al/Fe] 59- 63 F5.2 [Sun] [Sc/Fe] ? Abundance [Sc/Fe] 65- 69 F5.2 [Sun] [V/Fe] ? Abundance [V/Fe] 71- 75 F5.2 [Sun] [Cr/Fe] ? Abundance [Cr/Fe] 77- 81 F5.2 [Sun] [Mn/Fe] ? Abundance [Mn/Fe] 83- 87 F5.2 [Sun] [Ni/Fe] ? Abundance [Ni/Fe] 89- 93 F5.2 [Sun] [Ba/Fe] Abundance [Ba/Fe]
Acknowledgements: H.W. Zhang, zhw(at)
(End) Patricia Vannier [CDS] 02-Dec-2005
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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