Effective Temperatures of Solar Type Stars

Details Effective Temperatures of Solar Type Stars Effective Temperatures of Solar Type Stars

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002a%26at...21..317g&link_type=abstract

Astronomical and Astrophysical Transactions, vol. 21, Issue 4, p.317-325

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

For 29 stars of G0-G5 spectral types with color indices 0.60 leq Bndash V le 0.68 and parallaxes obtained by Hipparcos satellite effective temperatures, angular diameters and radii are determined by means of the method of infrared fluxes (IRFM) on the basis of JHKLM photometry. Effective temperatures obtained by iterations in the process of combined determination of the T_eff and angular diameter of star (T_{1}) and using modification of IRFM, so-called observation R-factor, (T_{2}) are compared. The mean differences of these two effective temperatures don't exceed 1% for all the IR bands. For the majority of investigated stars (23 from 29) bolometric magnitudes are less than for the Sun. The analysis of five parameters of solar-type stars investigated in this paper, such a effective temperature, bolometric magnitude, radius, metallicity and infrared color indices, shows that 18 Sco seems to be the most accetable candidate for solar "twins".

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