Color-magnitude diagrams for all bright stars within 1,000 light-years of the sun as determined by Mt. Wilson astronomers in 1935. (Left) Diagram without the subgiants, in which it is difficult to ...

Astronomy & Astrophysics published the first analysis of a catalog of 84 million individual stars in the Milky Way bulge as a part of the VVV ESO public survey. This gigantic data set allows ...

The color-magnitude diagram (CMD) is equivalent in practice to the Hertzsprung-Russell diagram (HRD). The spectral type is replaced by the “color index,” which describes the brightness of a star in ...

Publications of the Astronomical Society of the Pacific, Vol. 130, No. 985 (2018 March), pp. 1-16 (16 pages) We present new isochrone fits to color–magnitude diagrams from Hubble Space Telescope Wide ...