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J/A+A/485/571     Metallicities & activities of southern stars  (Jenkins+, 2008)

Metallicities and activities of southern stars. Jenkins J.S., Jones, H.R.A., Pavlenko Y., Pinfield D.J., Barnes J.R., Lyubchik Y. <Astron. Astrophys. 485, 571 (2008)> =2008A&A...485..571J
ADC_Keywords: Stars, nearby ; Photometry, UBV ; Abundances, [Fe/H] ; Spectroscopy Keywords: stars: abundances - stars: activity - stars: atmospheres - stars: planetary systems Abstract: We present the results from high-resolution spectroscopic measurements to determine metallicities and activities of bright stars in the southern hemisphere. Description: This table comprises a list of stellar metallicities and activities for a number of solar-type stars in the southern hemisphere using high-resolution (R∼46000) spectra acquired at the ESO-MPI 2.2m telescope and the instrument FEROS. The stars all have B-V colours in the range 0.5-0.9, V magnitudes between 7.5-9.5 and were selected from the Hipparcos catalogue (Perryman et al., 1997, Cat. I/239). The chromospheric activities along with their photon counting errors are shown, and were extracted by comparing the flux in triangular bandpasses centred in the cores of the Calcium II H and K lines (wavelengths of 3933.664Å and 3968.470Å) against the flux in two square bandpass regions centred on the continuum at either side of these lines (wavelengths of 3891Å and 4001Å). These values have been calibrated onto the Mt. Wilson system of measurements (Duncan et al., 1991, Cat. III/159) and then converted to the commonly used logRhk system (Noyes et al. 1984ApJ...287..769N) to remove the photospheric component of the flux. The metallicities shown in column 6, were measured by comparing a grid of synthetic spectra (WITA6; Pavlenko et al., 1995A&A...303..807P) to a number of mostly weak and unblended FeI lines at this spectral resolution. The internal errors were determined by fitting the Chi-squared parabola and after comparison with other works these values were found to agree to <0.1dex or 0.05dex with other high-resolution spectral abundances (e.g. Valenti & Fischer, 2005, Cat. J/ApJS/159/141). The tail of objects with really high errors were mainly lower S/N spectra due to changing weather patterns. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table4.dat 49 322 Metallicities and chromospheric activities of all stars in this sample
See also: I/239 : The Hipparcos and Tycho Catalogues (ESA 1997) III/159 : Ca II H and K Measurements Made at MWO (Duncan+ 1991) J/ApJS/159/141 : Spectroscopic properties of cool stars. I. (Valenti+, 2005) Byte-by-byte Description of file: table4.dat
Bytes Format Units Label Explanations
1- 9 A9 --- HD/HIP HD or HIP designation of the star 11- 15 F5.3 mag B-V Hipparcos B-V colour index 17- 20 F4.2 mag Vmag Hipparcos V magnitude 22- 26 F5.3 --- S Mount Wilson activity S-index 28- 32 F5.3 --- 1sigma Photon counting errors (i.e. root-N noise) 34- 38 F5.2 --- logRhk Non-photometric activity index 40- 44 F5.2 [Sun] [Fe/H] Metallicity 46- 49 F4.2 [Sun] e_[Fe/H] 1 sigma Chi-squared error
Acknowledgements: James Jenkins, jjenkins(at)astro.psu.edu
(End) Patricia Vannier [CDS] 21-Apr-2008
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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