Yes, but technically Capella isn't just no because it is actually a star system consisting of 4 stars in 2 binary pairs. For the first pair they are type-G GIANT stars, with a radius 10x the Sun's in a close orbit around each other, they are thought to be cooling by many astronomers and are on their path to becoming a red giant. The second pair are small, cool (compared to other stars), red dwarfs. The two pairs are about 10,000 astronomical units apart (1,500,000 km./930,000 mi.).
Capella is the brightest star in the constellation Auriga.
To the visual eye, it looks like a single star, but is in fact 4 stars comprised of two binary pairs.
The first pair are a set of G-type stars (Like our Sun) that are coming to the end of their lives.
The second pair are a set of red dwarfs.
All four are still on the main sequence.
Capella is in fact a quad star system, and not one star.One binary pair are still on the main sequence and close to becoming red giants.The other binary pair, are red dwarfs and will stay that way for trillions of years.
The sun is a main sequence star
Sirius is not a single star but a binary star system consisting of a white main sequence star and a white dwarf.
When a star "goes off the main-sequence" it generally means the star has run out of hydrogen fuel and is beginning the post-main-sequence or its end of life phase. The main sequence of a star is the time where it is no longer just a proto-star but is burning hydrogen as a primary source of fuel.
No, a white dwarf is not considered a main sequence star. A main sequence star is a star that is still fusing hydrogen in its core. A white dwarf is the remnant of a low to medium mass star in which fusion has stopped.
Capella is in fact a quad star system, and not one star.One binary pair are still on the main sequence and close to becoming red giants.The other binary pair, are red dwarfs and will stay that way for trillions of years.
No. Red giants are not on the main sequence.
What is capella star life cycle
A red main sequence star would be a red dwarf or a branch red giant. To be on the main sequence, you have to have hydrogen nuclear fusion.
The sun is a main sequence star, so 1 AU.
The sun is a main sequence star
Main-Sequence star
Sirius is not a single star but a binary star system consisting of a white main sequence star and a white dwarf.
None of those is a main sequence star.
The defining characteristic of a main sequence star burns hydrogen to helium in its core.
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.
The Capella star can be found in the Auriga constellation. It is the brightest star in Auriga.