The beta index in cool stars

Details The beta index in cool stars The beta index in cool stars

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.169..263r&link_type=abstract

(IAU, European Regional Astronomy Meeting on New Windows to the Universe, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics a

Astronomy and Astrophysics

Astrophysics

4

Cool Stars, Late Stars, Stellar Luminosity, Stellar Spectra, Ubv Spectra, Astronomical Photometry, F Stars, G Stars, Main Sequence Stars

Scientific paper

In order to extend the uvby photometric calibrations to spectral types later than G0, an attempt is made to use the combined uvby and beta systems for stars in the range of G5-K7 and luminosity classes V to III. The behavior in the MK-beta, (b-y)-beta and c1-beta diagrams of the 200 stars, only good spectroscopic data being considered, suggests the usefulness of the beta index as an independent parameter for late-type main-sequence stars, following in a natural way the general trend defined by Crawford for F- and G-type stars.

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