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J/A+A/603/L7     6 giants atomic data and equivalent widths (Mucciarelli+, 2017)

Chemical composition of the stellar cluster Gaia 1: no surprise behind Sirius. Mucciarelli A., Monaco L., Bonifacio P., Saviane I. <Astron. Astrophys. 603, L7 (2017)> =2017A&A...603L...7M (SIMBAD/NED BibCode)
ADC_Keywords: Associations, stellar ; Stars, giant ; Equivalent widths Keywords: stars: abundances - techniques: spectroscopic - open clusters and associations: individual: Gaia1 Abstract: We observed six He-clump stars of the intermediate-age stellar cluster Gaia1 with the MIKE/MAGELLAN spectrograph. A possible extra-galactic origin of this cluster, recently discovered thanks to the first data release of the ESA Gaia mission, has been suggested, based on its orbital parameters. Abundances for Fe, α, proton- and neutron-capture elements have been obtained. We find no evidence of intrinsic abundance spreads. The iron abundance is solar ([FeI/H]=+0.00±0.01; σ=0.03dex). All the other abundance ratios are generally solar-scaled, similar to the Galactic thin disk and open cluster stars of similar metallicity. The chemical composition of Gaia1 does not support an extra-galactic origin for this stellar cluster, which can be considered as a standard Galactic open cluster. Description: Atomic data (wavelength, oscillator strength, excitation potential and measured equivalent width) for all the measured spectral lines in six giant stars of the stellar cluster Gaia1 are provided. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 94 7 Main information on the observed MIKE targets tablea1.dat 49 1150 Atomic data and equivalent widths
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1 I1 --- ID [1/7] Star identification number 3- 7 A5 --- --- [2MASS] 8- 23 A16 --- 2MASS 2MASS name (HHMMSSss+DDMMSSs) 25- 34 F10.6 deg RAdeg Right ascension (J2000) 36- 45 F10.6 deg DEdeg Declination (J2000) 47- 52 F6.3 mag Jmag 2MASS J magnitude 54- 59 F6.3 mag Ksmag 2MASS Ks magnitude 61- 65 F5.1 km/s RV Radial velocity (1) 67- 70 I4 K Teff ?=- Effective temperature (1) 72- 73 I2 K e_Teff ?=- rms uncertainty on Teff (1) 75- 78 F4.2 [cm/s2] logg ?=- Surface gravity (1) 80- 83 F4.2 [cm/s2] e_logg ?=- rms uncertainty on logg (1) 85- 87 F3.1 km/s Vt ?=- Microturbulent velocity (1) 89- 91 F3.1 km/s e_Vt ?=- rms uncertainty on Vt (1) 93- 94 I2 --- SNR Signal-to-noise ratio measured at 600nm
Note (1): derived from the MIKE spectra.
Byte-by-byte Description of file: tablea1.dat
Bytes Format Units Label Explanations
4 I1 --- ID [1/7] Star identification number 7- 12 F6.1 0.1nm lambda Wavelength 16- 20 F5.2 --- Element Element 25- 30 F6.3 --- log(gf) Oscillator strength 35- 39 F5.3 eV Ep Excitation potential 44- 49 F6.2 0.1pm EW Measured equivalent width
Acknowledgements: Alessio Mucciarelli, alessio.mucciarelli2(at)unibo.it
(End) Patricia Vannier [CDS] 04-Jul-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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