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J/A+A/599/A96     [C/H] Chemical abundances of 1110 stars (Suarez-Andres+, 2017)

CNO behaviour in planet-harbouring stars. II. Carbon abundances in stars with and without planets using the CH band. Suarez-Andres L., Israelian G., Gonzalez Hernandez J.I., Adibekyan V.Zh., Delgado Mena E., Santos N.C., Sousa S.G. <Astron. Astrophys. 599, A96 (2017)> =2017A&A...599A..96S (SIMBAD/NED BibCode)
ADC_Keywords: Stars, nearby ; Stars, double and multiple ; Abundances, peculiar Keywords: stars: abundances - stars: chemically peculiar - stars: planetary systems Abstract: Carbon, oxygen and nitrogen (CNO) are key elements in stellar formation and evolution, and their abundances should also have a significant impact on planetary formation and evolution. We aim to present a detailed spectroscopic analysis of 1110 solar-type stars, 143 of which are known to have planetary companions. We have determined the carbon abundances of these stars and investigate a possible connection between C and the presence of planetary companions. We used the HARPS spectrograph to obtain high-resolution optical spectra of our targets. Spectral synthesis of the CH band at 4300Å was performed with the spectral synthesis codes MOOG and FITTING. We have studied carbon in several reliable spectral windows and have obtained abundances and distributions that show that planet host stars are carbon rich when compared to single stars, a signature caused by the known metal-rich nature of stars with planets. We find no different behaviour when separating the stars by the mass of the planetary companion. We conclude that reliable carbon abundances can be derived for solar-type stars from the CH band at 4300Å. We confirm two different slope trends for [C/Fe] with [Fe/H] because the behaviour is opposite for stars above and below solar values. We observe a flat distribution of the [C/Fe] ratio for all planetary masses, a finding that apparently excludes any clear connection between the [C/Fe] abundance ratio and planetary mass. Description: Stellar parameters and [C/H] abundances for 1110 stars studied. For each star Teff, logg, [Fe/H], vtur, [C/H] and e_[C/H] are given. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 50 1110 Stellar parameters and [C/H] abundances
See also: J/A+A/545/A32 : Chemical abundances of 1111 FGK stars (Adibekyan+, 2012) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 10 A10 --- Name Name of the targets 12- 15 I4 K Teff Effective temperature 17- 20 F4.2 [cm/s2] logg Gravity (logg) 22- 26 F5.2 [-] [Fe/H] Metallicity 28- 31 F4.2 km/s vtur Microturbulence velocity 33- 39 F7.4 [-] [C/H] Carbon abundance 41- 44 F4.2 [-] e_[C/H] Errors in [C/H] 46- 50 A5 --- popB Population
Acknowledgements: Lucia Suarez-Andres, lsuarez(at)iac.es References: Adibekyan et al., 2012A&A...545A..32A, Cat. J/A+A/545/A32 Chemical abundances of 1111 FGK stars from the HARPS GTO planet search program. Galactic stellar populations and planets
(End) Lucia Suarez-Andres [IAC, Spain], Patricia Vannier [CDS] 02-Jan-2017
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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