The continuum flux distribution for Arcturus

Details The continuum flux distribution for Arcturus The continuum flux distribution for Arcturus

May 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975mnras.171..425b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 171, May 1975, p. 425-439. Research supported by the Science Research C

Astronomy and Astrophysics

Astronomy

23

Astronomical Models, Atmospheric Models, Continuous Spectra, Radiant Flux Density, Stellar Atmospheres, Absorption Spectra, Error Analysis, Spectral Energy Distribution, Stellar Luminosity, Stellar Spectrophotometry, Temperature Distribution

Scientific paper

A composite of all continuum flux data for Arcturus has been plotted including additional results obtained recently in Israel. The data are compared with flux distributions calculated from Carbon & Gingerich, and Peytremann grids of models. There is not good agreement between the calculated and observed flux distributions at shorter wavelengths, but the Peytremann model seems considerably better than the Carbon & Gingerich model. The origin of the discrepancy is discussed and a compromise value for the effective temperature of 4500 K (plus 50 or minus 120 K) suggested. The need for accurate spectrophotometry and an improved model atmosphere is stressed.

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