Procyon is actually two different stars in a binary star system. Procyon A is a main sequence star with a spectral class of F. This means the star... Learn more about this topic: Types of Stars | Classification, Size & Life Cycle ...
The Sun, the 12 brightest stars of the Northern Hemisphere and the white dwarf companion stars to Sirius and Procyon are shown. Photo courtesy of NASA In 1924, the astronomer A. S. Eddington showed that the luminosity and mass of a star were related. The larger a star (i.e., more...
Such alleles are thus functionally similar and can be classified into supertypes based on their antigen-binding site amino-acid sequences19–21. Because we were interested in functional diversity, and to avoid sparse networks caused by an excess of alleles with very few interactions, we first ...