At the moment R136a1 still holds the title, so see related question.
its a blue color
Main sequence stars that are most massive are O-type stars, which can be more than 16 times the mass of the Sun. These stars are among the hottest and brightest in the main sequence and have relatively short lifespans compared to lower mass stars.
The most massive main sequence stars are typically blue in color, due to their high surface temperatures. These stars are known as O-type stars and can be tens of times more massive than the Sun.
Yes, generally the hottest main sequence stars are also the most massive. This is because more massive stars have higher core temperatures and pressures, resulting in hotter surface temperatures. Therefore, there is a direct correlation between a star's mass and its surface temperature on the main sequence.
Red
The most massive type of main sequence star on the HR diagram would be indicated by the main sequence area at the top left of the HR diagram, which would be blue or violet in color. Zeta Puppis is an example of such a star. It comes in at 40 solar masses. It is classified as a type "O" star.
A main sequence star's temperature is most closely related to its color and brightness.
No. The less massive a star, the longer it will last. A main sequence star half the mass of the sun can be expected to last about 5 times longer.
A star's position in the main sequence on the Hertzsprung-Russell diagram tells us its temperature, luminosity, and evolutionary stage. Stars in the main sequence are undergoing nuclear fusion in their core, converting hydrogen into helium. The more massive and brighter stars are found at the top left, while less massive and dimmer stars are at the bottom right of the main sequence.
The most massive star known is R136A1 - a rather disappointing name - has a temperature of about 53,000 degrees kelvin. Our Sun for comparison is a mere 5,778 degrees kelvin.
Most stars are on the main sequence; that includes red dwarves. Specifically, in this case, the closest known star - Proxima Centauri - is also the closest main-sequence star.
A Star spends most of its life on the "main sequence" of the Hertzsprung-Russell diagram (see related link below). While here it is called a "main sequence" star and its source of energy during this phase of its life is the fusion of hydrogen into helium in its core.