Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...186..200s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 186, no. 1-2, Nov. 1987, p. 200-212. DFG-supported research.
Astronomy and Astrophysics
Astrophysics
93
Giant Stars, Limb Darkening, M Stars, Stellar Models, Supergiant Stars, Wavelengths, Late Stars, Mira Variables, Radii, Stellar Atmospheres, Stellar Luminosity, Stellar Mass
Scientific paper
Wavelength-dependent center-to-limb variations are investigated from model photospheres of superluminous M type stars. Normal giants and supergiants with fairly compact photospheres have smooth limb-darkening curves which, however, are not always well approximated by a linear limb-darkening law. Center-to-limb variation in low-mass, high-luminosity non-Miras with spherically extended photospheres and in Miras may show a complicated behaviour in diverse filters used by observers. The interpretation of a measured monochromatic radius and its correlation to the stellar radius defining the effective temperature is not trivial. Selected observed lunar occultation and speckle interferometry radii are discussed.
Scholz Marek
Takeda Yukiharu
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