Reference : Accurate spectroscopic parameters of WASP planet host stars
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
http://hdl.handle.net/2268/135078
Accurate spectroscopic parameters of WASP planet host stars
English
Doyle, Amanda P. [> >]
Smalley, B. [> >]
Maxted, P. F. L. [> >]
Anderson, D. R. [> >]
Collier Cameron, A. [> >]
Gillon, Michaël mailto [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image >]
Hellier, C. [> >]
Pollacco, D. [> >]
Queloz, D. [> >]
Triaud, A. H. M. J. [> >]
West, R. G. [> >]
1-Feb-2013
Monthly Notices of the Royal Astronomical Society
Blackwell Publishing
428
4
3164-3172
Yes (verified by ORBi)
International
0035-8711
Oxford
United Kingdom
[en] Astrophysics - Solar and Stellar Astrophysics ; Astrophysics - Earth and Planetary Astrophysics
[en] We have made a detailed spectral analysis of eleven Wide Angle Search for Planets (WASP) planet host stars using high signal-to-noise (S/N) HARPS spectra. Our line list was carefully selected from the spectra of the Sun and Procyon, and we made a critical evaluation of the atomic data. The spectral lines were measured using equivalent widths. The procedures were tested on the Sun and Procyon prior to be being used on the WASP stars. The effective temperature, surface gravity, microturbulent velocity and metallicity were determined for all the stars. We show that abundances derived from high S/N spectra are likely to be higher than those obtained from low S/N spectra, as noise can cause the equivalent width to be underestimated. We also show that there is a limit to the accuracy of stellar parameters that can be achieved, despite using high S/N spectra, and the average uncertainty in effective temperature, surface gravity, microturbulent velocity and metallicity is 83 K, 0.11 dex, 0.11 km/s and 0.10 dex respectively.
http://hdl.handle.net/2268/135078
http://adsabs.harvard.edu/abs/2012arXiv1210.5931D
9 pages, 5 figures, in MNRAS

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