The light output from normal main sequence stars
approximately follows a black body spectral distribution.
General relativity tells us that a main sequence star will, in terms of its mass, form a dwarf, a neutron star, or a black hole.
If the heavy ions, as currently believed, are produced during supernova explosions when stars runs out of their fuel supplies and start to end their lives, then quasars with heavy elements should be much elder than the main sequence stars and normal galaxies.
These are blue main sequence stars
that appear to be young because they are bluer and more luminous than other stars in the cluster.
The set included white dwarfs, red dwarfs, main sequence stars, giant stars, Wolf-Rayet stars, carbon stars, etc.
We created a broader group that we called yellow main sequence stars to include all stars with masses between 0.6 and 1.7 solar masses, and a temperature between 4,200 and 7,200 K.
We find two clear frequencies of f1 = 0.80209 c/d and f2 = 0.8244 c/d, which is within the characteristic range for g-mode pulsation of hotter main sequence stars
. Our data suggests the possible presence of a third frequency, but confirmation is pending more data analysis.
In most constellations the visual magnitudes are all scrambled up, and distant giants often outshine nearby main sequence stars
"It may give us an idea about how many main sequence stars
, how many red giants, or white dwarf stars are there on average." It also tells us something about the population and properties of supermassive black holes that are doing the disrupting.
Proportion of main sequence stars
Spectral type Colour Proportion (%) O Blue 0.003 B Blue-white 0.13 A White 0.63 F White-yellow 3.1 G Yellow 8 K Orange 13 M Red 78 Table 3.
The only exceptions are 2,11, and 12 Lyncis and HD 48766, all A- or F-type main sequence stars
. The colors of the giant stars are subtle, but to me all the more rewarding when I do detect them.
That yellow star is actually two foreground main sequence stars
, but they're too close to split with handheld binoculars.