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J/A+A/416/1117      Abundances in the early Galaxy             (Cayrel+, 2004)

First stars. V. Abundance patterns from C to Zn and supernova yields in the early Galaxy. Cayrel R., Depagne E., Spite M., Hill V., Spite F., Francois P., Plez B., Beers T., Primas F., Andersen J., Barbuy B., Bonifacio P., Molaro P., Nordstrom B. <Astron. Astrophys. 416, 1117 (2004)> =2004A&A...416.1117C
ADC_Keywords: Abundances, peculiar ; Supernovae ; Stars, population II Keywords: Galaxy: abundances - Galaxy: halo - Galaxy: evolution - stars: abundances - stars: Population II - stars: Supernovae: general Abstract: In the framework of the ESO Large Programme "First Stars", very high-quality spectra of some 70 very metal-poor dwarfs and giants were obtained with the ESO VLT and UVES spectrograph. These stars are likely to have descended from the first generation(s) of stars formed after the Big Bang, and their detailed composition provides constraints on issues such as the nature of the first supernovae, the efficiency of mixing processes in the early Galaxy, the formation and evolution of the halo of the Galaxy, and the possible sources of reionization of the Universe. This paper presents the abundance analysis of an homogeneous sample of 35 giants selected from the HK survey of Beers et al. (1992, Cat. J/AJ/103/1987, 1999, Cat. J/AJ/117/981), emphasizing stars of extremely low metallicity: 30 of our 35 stars are in the range -4.1<[Fe/H]←2.7, and 22 stars have [Fe/H]←3.0. Our new VLT/UVES spectra, at a resolving power of R∼45000 and with signal-to-noise ratios of 100-200 per pixel over the wavelength range 330-1000 nm, are greatly superior to those of the classic studies of McWilliam et al. (1995AJ....109.2757M) and Ryan et al. (1996ApJ...471..254R). Description: The observations were performed during several runs from April 2000 to November 2001 with the VLT-UT2 and the high-resolution spectrograph UVES. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 43 35 Precise coordinates of the BPS programme stars (positions of other stars added from Simbad) table3.dat 274 279 Equivalent widths and oscillator strengths of the lines (from C to Zn) table8.dat 61 665 *Abundances of the elements from C to Zn for the 35 stars
Note on table8.dat: - the oxygen abundance has been computed with 1D models (for the correction 1D -> 3D see section 4.2 of the paper) - the abundances of Na, Al and K are NOT corrected for non-LTE effects (the corresponding corrections are given in section 4.4.1)
See also: J/A+A/403/1105 : Extremely metal-poor giants equivalent widths (Francois+ 2003) Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Seq Sequential number of the star 4- 15 A12 --- Name Name of the star 18- 19 I2 h RAh Right ascension (J2000.0) 21- 22 I2 min RAm Right ascension (J2000.0) 24- 28 F5.2 s RAs Right ascension (J2000.0) 30 A1 --- DE- Declination sign (J2000.0) 31- 32 I2 deg DEd Declination (J2000.0) 34- 35 I2 arcmin DEm Declination (J2000.0) 37- 40 F4.1 arcsec DEs Declination (J2000.0)
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 5 A5 --- Element Name of the species 6- 15 F10.3 0.1nm lambda wavelength of the line 16- 21 F6.2 eV Kiex Excitation potential 22- 28 F7.3 --- loggf oscillator strength 30- 35 F6.1 0.1nm W1 ? Equivalent width for star 1 : HD 2796 36 A1 --- --- [s] s: synth 38- 42 F5.1 0.1nm W2 ? Equivalent width for star 2 : HD 122563 43 A1 --- --- [s] s: synth 45- 49 F5.1 0.1nm W3 ? Equivalent width for star 3 : HD 186478 50 A1 --- --- [s] s: synth 52- 56 F5.1 0.1nm W4 ? Equivalent width for star 4 : BD+17 3248 57 A1 --- --- [s] s: synth 59- 63 F5.1 0.1nm W5 ? Equivalent width for star 5 : BD-18 5550 64 A1 --- --- [s] s: synth 66- 70 F5.1 0.1nm W6 ? Equivalent width for star 6 : CD-38 245 71 A1 --- --- [s] s: synth 73- 77 F5.1 0.1nm W7 ? Equivalent width for star 7 : BS 16467-062 78 A1 --- --- [s] s: synth 80- 84 F5.1 0.1nm W8 ? Equivalent width for star 8 : BS 16477-003 85 A1 --- --- [s] s: synth 87- 91 F5.1 0.1nm W9 ? Equivalent width for star 9 : BS 17569-049 92 A1 --- --- [s] s: synth 94- 98 F5.1 0.1nm W10 ? Equivalent width for star 10 : CS 22169-035 99 A1 --- --- [s] s: synth 100 A1 --- l_W11 Limit flag on W11 101-105 F5.1 0.1nm W11 ? Equivalent width for star 11 : CS 22172-002 106 A1 --- --- [s] s: synth 108-112 F5.1 0.1nm W12 ? Equivalent width for star 12 : CS 22186-025 113 A1 --- --- [s] s: synth 115-119 F5.1 0.1nm W13 ? Equivalent width for star 13 : CS 22189-009 120 A1 --- --- [s] s: synth 122-126 F5.1 0.1nm W14 ? Equivalent width for star 14 : CS 22873-055 127 A1 --- --- [s] s: synth 129-133 F5.1 0.1nm W15 ? Equivalent width for star 15 : CS 22873-166 134 A1 --- --- [s] s: synth 136-140 F5.1 0.1nm W16 ? Equivalent width for star 16 : CS 22878-101 141 A1 --- --- [s] s: synth 143-147 F5.1 0.1nm W17 ? Equivalent width for star 17 : CS 22885-096 148 A1 --- --- [s] s: synth 150-154 F5.1 0.1nm W18 ? Equivalent width for star 18 : CS 22891-209 155 A1 --- --- [s] s: synth 157-161 F5.1 0.1nm W19 ? Equivalent width for star 19 : CS 22892-052 162 A1 --- --- [s] s: synth 164-168 F5.1 0.1nm W20 ? Equivalent width for star 20 : CS 22896-154 169 A1 --- --- [s] s: synth 171-175 F5.1 0.1nm W21 ? Equivalent width for star 21 : CS 22897-008 176 A1 --- --- [s] s: synth 178-182 F5.1 0.1nm W22 ? Equivalent width for star 22 : CS 22948-066 183 A1 --- --- [s] s: synth 185-189 F5.1 0.1nm W23 ? Equivalent width for star 23 : CS 22949-037 190 A1 --- --- [s] s: synth 192-196 F5.1 0.1nm W24 ? Equivalent width for star 24 : CS 22952-015 197 A1 --- --- [s] s: synth 199-203 F5.1 0.1nm W25 ? Equivalent width for star 25 : CS 22953-003 204 A1 --- --- [s] s: synth 206-210 F5.1 0.1nm W26 ? Equivalent width for star 26 : CS 22956-050 211 A1 --- --- [s] s: synth 213-217 F5.1 0.1nm W27 ? Equivalent width for star 27 : CS 22966-057 218 A1 --- --- [s] s: synth 220-224 F5.1 0.1nm W28 ? Equivalent width for star 28 : CS 22968-014 225 A1 --- --- [s] s: synth 227-231 F5.1 0.1nm W29 ? Equivalent width for star 29 : CS 29491-053 232 A1 --- --- [s] s: synth 234-238 F5.1 0.1nm W30 ? Equivalent width for star 30 : CS 29495-041 239 A1 --- --- [s] s: synth 241-245 F5.1 0.1nm W31 ? Equivalent width for star 31 : CS 29502-042 246 A1 --- --- [s] s: synth 248-252 F5.1 0.1nm W32 ? Equivalent width for star 32 : CS 29516-024 253 A1 --- --- [s] s: synth 255-259 F5.1 0.1nm W33 ? Equivalent width for star 33 : CS 29518-051 260 A1 --- --- [s] s: synth 262-266 F5.1 0.1nm W34 ? Equivalent width for star 34 : CS 30325-094 267 A1 --- --- [s] s: synth 269-273 F5.1 0.1nm W35 ? Equivalent width for star 35 : CS 31082-001 274 A1 --- --- [s] s: synth
Byte-by-byte Description of file: table8.dat
Bytes Format Units Label Explanations
1- 2 I2 --- Seq Sequential number of the star 4- 15 A12 --- Name Name of the star 18- 22 F5.2 [Sun] [Fe/H] Adopted metallicity 24- 30 A7 --- Element Name of the species 31- 35 F5.2 --- logeps ? logarithm of the number of atoms of the element for 10^12 hydrogen atoms 37 A1 --- l_[M/H] Limit flag on [M/H] 38- 42 F5.2 [Sun] [M/H] ? log(ratio relative to the solar ratio) 45 A1 --- l_[M/Fe] Limit flag on [M/Fe] 46- 50 F5.2 [Sun] [M/Fe] ? log(ratio relative to the solar ratio) 53- 56 F4.2 [Sun] e_[M/H] ? Standard deviation for [M/H] and [M/Fe] 59- 61 I3 --- Nlines ? Number of lines
Acknowledgements: Monique Spite References: Hill et al., Paper I 2002A&A...387..560H Depagne et al., Paper II 2002A&A...390..187D Francois et al., Paper III 2003A&A...403.1105F, Cat. J/A+A/403/1105
(End) Patricia Bauer [CDS] 24-Nov-2003
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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