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Determination of Teff for Candidate Standard Stars Based on Comparison with Model Atmoshperes

Published online by Cambridge University Press:  04 August 2017

M. L. Malagnini ,
C. Morossi  and
M. Ramella
M. L. Malagnini
Affiliation:
Astronomical Observatory, Trieste
C. Morossi
Affiliation:
Astronomical Observatory, Trieste
M. Ramella
Affiliation:
Astronomical Observatory, Trieste

Abstract

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A systematic analysis, as complete as possible, of early type standard stars has been undertaken at the Astronomical Observatory of Trieste, in order to obtain a sequence of carefully determined spectroscopic data to be used in the comparison of “normal” and “chemically peculiar” stars. As an intermediate and necessary step, effective temperatures are derived. The determination of Teff is performed either by comparing observed and computed flux distributions, or by using a calibration of UV-visual photometric index versus Teff. The results for a sample of stars in the spectral type range B2-F8 are presented, and an analysis of the influence of the adopted value of log g on the derived Teff values is reported. As a check on the validity of the results, the Teff and log g values are used to construct a synthetic spectrum which is compared with the IUE high resolution observations of the stars in our list.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 111: Calibration of Fundamental Stellar Quantities , 1985 , pp. 535 - 538
Copyright
Copyright © Reidel 1985 

References

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