Stars come in all colors and sizes. But our eyes limit us to seeing very few of those colors. And the range of apparent magnitudes of stars we can see with our naked eye is also rather limited.
The recent discovery that the star Tr 27-28 is of spectral type WC 9 allows the determination of the visual absolute magnitude of a single WC 9-type star based on open cluster membership: Mv = —5.3 ± ...
Under ideal viewing conditions, all naked-eye visible stars belong to the Milky Way galaxy. Even the most luminous stars become too faint to see with the naked eye at the distances of other galaxies ...
The astronomical magnitude system, initially developed by Hipparchus and refined by Ptolemy, quantifies the brightness of celestial objects, with brighter objects having lower magnitudes. Norman R.
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