Title
Precise effective temperatures of solar analog stars
Date Issued
01 October 2011
Access level
open access
Resource Type
conference paper
Author(s)
Cornejo-Espinoza D.
Ramírez I.
Barklem P.S.
Departamento de Astrofísica, Agencia Espacial Del Peru
Abstract
We perform a study of 62 solar analog stars to compute their effective temperatures (T eff) using the Balmer line wing fitting procedure and compare them with T eff values obtained using other commonly employed methods. We use observed Hα spectral lines and a fine grid of theoretical LTE model spectra calculated with the best available atomic data and most recent quantum theory. Our spectroscopic data are of very high quality and have been carefully normalized to recover the proper shape of the Hα line profile. We obtain T eff values with internal errors of about 25K. Comparison of our results with those from other methods shows reasonably good agreement. Then, combining T eff values obtained from four independent techniques, we are able to determine final T eff values with errors of about 10K. © 2012 International Astronomical Union.
Start page
328
End page
331
Volume
7
Issue
S286
Language
English
OCDE Knowledge area
Astronomía
Scopus EID
2-s2.0-84864364772
ISBN
9781107019867
Source
Proceedings of the International Astronomical Union
ISSN of the container
17439213
Sponsor(s)
I. R.’s work was performed under contract with the California Institute of Technology (Caltech) funded by NASA through the Sagan Fellowship Program. D. C. thanks the Organizing Commitee of the event for the financial support, and J.F. Valle of the direction of Astrophysics of CONIDA - Space Agency of Perú, for his suggestions and CONIDA for its support. P. S. B is a Royal Swedish Academy of Sciences Research Fellow supported by a grant from the Knut and Alice Wallenberg Foundation.
Sources of information: Directorio de Producción Científica Scopus