spectral class in a sentence

Examples

1. It has a spectral class of F81bv, meaning that it is an F-type supergiant star.
2. This is a hot, core hydrogen-fusing B-type main sequence star of spectral class B2 Vp.
3. The red supergiant is in the constellation Carina and has a spectral class of M3.
4. It belongs to the spectral class L5; its surface temperature is 1300 to 2000 Kelvin.
5. The luminosity is also lower than predicted by models for a star of this spectral class.
6. The secondary star has an O5 spectral class.
7. No massive star remains with spectral class O for more than about 5 6 million years.
8. In 1933, Bengt Str�mgren introduced the term Hertzsprung Russell diagram to denote a luminosity-spectral class diagram.
9. The brightest member of this constellation is Aldebaran, an orange-hued, spectral class K5 III giant star.
10. In the MK system, a luminosity class is added to the spectral class using Roman numerals.