Bibcode
Blackwell, D. E.; Petford, A. D.; Arribas, S.; Haddock, D. J.; Selby, M. J.
Referencia bibliográfica
Astronomy and Astrophysics (ISSN 0004-6361), vol. 232, no. 2, June 1990, p. 396-410.
Fecha de publicación:
6
1990
Número de citas
149
Número de citas referidas
131
Descripción
Temperatures and angular diameters are derived for 114 F-M stars using
the infrared flux (IRFM) method and initially both the Vega flux
calibrations of Dreiling and Bell (DB), and of Mountain et al. (1985).
The DB calibration gives a significantly smaller variation of
temperature with wavelength (0.10%) than the Mountain one (1.59%), and
we adopt the DB one for the final results. Apart from a few substantial
deviations, the temperatures agree well (standard deviation 0.12%), for
overlapping stars with the adopted temperatures of Bell and Gustafsson
using synthetic colours. Plots of temperature against V-Kn,
where Kn is a narrow band filter in the K region, show a mean
standard deviation in temperature of 0.46%. It is suggested that the
temperatures have an order of accuracy of better than 1 %, but the
accuracy is critically dependent on that of the infrared calibration of
Vega, which remains uncertain. The possibility of using IRFM angular
diameters as a method of detecting unresolved binary stars is discussed.