| Issue |
A&A
Volume 587, March 2016
|
|
|---|---|---|
| Article Number | A131 | |
| Number of page(s) | 9 | |
| Section | Stellar atmospheres | |
| DOI | https://doi.org/10.1051/0004-6361/201527472 | |
| Published online | 02 March 2016 | |
Solar twins in the ELODIE archive⋆,⋆⋆
1
LAB UMR 5804, Univ. Bordeaux – CNRS,
33270
Floirac,
France
e-mail:
soubiran@obs.u-bordeaux1.fr
2
Observatoire de Genève, Université de Genève,
1290
Versoix,
Switzerland
Received: 29 September 2015
Accepted: 23 December 2015
A large dataset of ~2800 spectra extracted from the ELODIE archive was analysed in order to find solar twins. Stellar spectra closely resembling the spectrum of the Sun were selected by applying a purely differential method, directly on the fluxes. As solar reference, 18 spectra of asteroids, Moon, and blue sky were used. Atmospheric parameters and differential abundances of eight chemical elements were determined for the solar twin candidates after a careful selection of appropriate lines. The Li feature of the targets was investigated and additional information on absolute magnitude and age was gathered from the literature. HIP 076114 (HD 138573) is our best twin candidate; it looks exactly like the Sun in all these properties.
Key words: stars: atmospheres / stars: abundances / stars: fundamental parameters / stars: solar-type
Based on data extracted from the ELODIE archive at Observatoire de Haute–Provence (OHP), http://atlas.obs-hp.fr/elodie/
Tables 2 and 4–8 are only available at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via http://cdsarc.u-strasbg.fr/viz-bin/qcat?J/A+A/587/A131
© ESO, 2016
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