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J/ApJ/667/911  Abundances on the main sequence of ω Cen  (Stanford+, 2007)

Abundances on the main sequence of ω Centauri. Stanford L.M., Da Costa G.S., Norris J.E., Cannon R.D. <Astrophys. J., 667, 911-929 (2007)> =2007ApJ...667..911S
ADC_Keywords: Clusters, globular; Stars, dwarfs ; Abundances Keywords: globular clusters: general - globular clusters: individual (omega Centauri) Abstract: Abundance ratios of carbon, nitrogen, and strontium relative to iron, calculated using spectrum synthesis techniques, are given for a sample of main-sequence and turnoff stars that belong to the globular cluster omega Centauri. The variations of carbon, nitrogen, and/or strontium show several different abundance patterns as a function of [Fe/H]. The source of the enhancements/depletions in carbon, nitrogen, and/or strontium may be enrichment from asymptotic giant branch stars of low (1-3M and intermediate (3-8M mass. Massive rotating stars that produce excess nitrogen without carbon and oxygen overabundances may also play a role. These abundances enable different contributors to be considered and incorporated into the evolutionary picture of omega Cen. Description: The observations and reduction of our data are described in detail in Stanford et al. (2006, Cat. J/ApJ/647/1075), to which we refer the reader. Suffice it here to say that the photometry of the cluster was obtained with the 1m telescope/Tektronix CCD combination at Siding Spring Observatory in the V and B bands. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 76 378 Stellar parameters, indices and abundances for ω Cen sample
See also: J/ApJ/647/1075 : Age-metallicity relation of ω Cen (Stanford+, 2006) Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 7 I7 --- SDN Identification number as in Paper I (Stanford et al. 2006, Cat. J/ApJ/647/1075), Cl* NGC 5139 SDN NNNNNNN in Simbad 9- 14 F6.3 mag Vmag The V band magnitude 16- 20 F5.3 mag B-V The (B-V) color index 22- 25 I4 K Teff The effective temperature 27- 29 F3.1 [cm/s2] log(g) Log of the surface gravity 31- 35 F5.2 [Sun] [Fe/H] Metallicity 37- 41 F5.2 --- GBand G band (CH, ∼4300Å) index 43- 47 F5.2 --- S3839 S3839 index (1) 49- 53 F5.2 --- Sr4077 Sr II (4077Å) line index 55- 60 F6.2 --- Ba4554 Ba II (4554Å) line index 62- 66 F5.2 [-] [C/Fe] ? Log of the C/Fe number abundance 68- 71 F4.2 [-] [N/Fe] ? Log of the N/Fe number abundance 73- 76 F4.2 [-] [Sr/Fe] ? Log of the Sr/Fe number abundance
Note (1): CN index as defined by Norris et al. (1981ApJ...244..205N) from the violet CN band at 3883Å).
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 25-Nov-2009
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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