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The effective temperatures of hot stars

Name: The effective temperatures of hot stars
Creator: Paul A. Crowther
Keywords: 13. Climate action, 0103 physical sciences, 11. Sustainability, 14. Life underwater, 01 natural sciences

descriptionPublicationkeyboard_double_arrow_right Article , Part of book or chapter of book , Other literature type 01 Jan 1997 English Publisher:Cambridge University Press (CUP)Journal:Symposium - International Astronomical Union, volume 189, pages 137-146 (issn: 0074-1809,

Authors: Paul A. Crowther;

doi: 10.1017/s0074180900116614 , 10.1007/978-94-011-5602-8_20

The effective temperatures of hot stars

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Abstract

We review the effective temperature scale of hot (≤ 10 kK) stars, including results from direct, continuum and ionization equilibrium techniques. We discuss the impact of recent developments in theoretical model atmospheres for OB subdwarfs, dwarfs and supergiants, white dwarfs and Wolf Rayet stars and present a revised Teff scale for OB stars. Direct techniques coupled with Kurucz model atmospheres allow Strömgren photometry to be used as a sensitive Teff indicator for normal stars with Teff ≥ 25 kK. Reliable Teff determinations for hotter, low surface gravity and H-deficient stars require sophisticated ionization equilibrium techniques, generally considering non-LTE and line-blanketing effects.

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University College London
United Kingdom

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