Question: Which is a type of star found on the lower end of the main sequence?
Disambiguated questions and answers: question: Which is a type of star found on the lower end of the main sequence, based on its mass?
Which is a type of star found on the lower end of the main sequence, based on its spectral class?
answer: Stars below about 1.5 times the mass of the Sun
stars of spectral class F or cooler
F or cooler
Natural Questions answer: Van Biesbroeck 's star (from the Wikipedia article "Main sequence")