Which spectral class designation corresponds to the coolest M-class stars appearing distinctly red?
Answer
M Class
The color of a star serves as the most immediate visual indicator of its surface temperature. This relationship follows a predictable pattern: cooler objects glow redder, while hotter objects progress toward white and then blue. For stars, the coolest end of the spectrum appears decidedly red, corresponding to the M spectral class. Conversely, the hottest stars fall into the O Class and exhibit a bluer hue. The G Class, which includes our Sun, occupies the medium range, appearing yellow, placing it squarely between the extremes of the spectral classification system.
Related Questions
What five basic characteristics fundamentally describe every star in the universe?What contest does a star's mass set the stakes for concerning gravity and nuclear fusion pressure?How is stellar mass conventionally quantified relative to our Sun for calculation purposes?How does the lifespan of a star packing 100 solar masses compare to the potential lifetime of low-mass red dwarfs?What is the approximate diameter range for extremely compressed stellar remnants known as neutron stars?What two physical properties mathematically determine a star's total energy broadcast, known as luminosity?On what absolute temperature scale is stellar surface temperature quantified, setting absolute zero at 0 K?Which spectral class designation corresponds to the coolest M-class stars appearing distinctly red?What standardized measure defines a star’s true brightness by hypothetically placing it at a fixed distance of 10 parsecs?What relationship is plotted on the Hertzsprung-Russell diagram concerning temperature and brightness?