SIMBAD references

2007MNRAS.378..617K - Mon. Not. R. Astron. Soc., 378, 617-624 (2007/June-3)

High-precision effective temperatures of 161 FGK supergiants from line-depth ratios.

KOVTYUKH V.V.

Abstract (from CDS):

Precise effective temperatures (Teff) are determined for 161 FGK supergiants using method of line-depth ratios. We obtain a set of 131 relations for temperatures of supergiants as a function of line depths. These relations have been calibrated against previously published accurate temperature estimates. The application range of the method is 3600-7800 K (F0I-K5I). The internal error of a single calibration is less than 110 K, while combination of all calibrations reduces uncertainty to only 5-30 K (standard error). The error in the zero-point is estimated to be less than 100-200 K. A significant advantage of the line ratio method is its independence of the interstellar reddening, and only modest sensitivity to abundance, macroturbulence, rotation and other factors.

Abstract Copyright: 2007 The Author. Journal compilation © 2007 RAS

Journal keyword(s): star: fundamental parameters - supergiants - Cepheids

Simbad objects: 164

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