main-sequence stars
[meɪn ˈsiːkwəns stɑːrz]
nounpl: main-sequence stars
estrelas da sequência principal
1. Stars that are in the stable middle phase of their life cycle, fusing hydrogen into helium in their cores, and located on the main diagonal of the Hertzsprung-Russell diagram
Our Sun is a main-sequence star that will remain in this stable phase for approximately 10 billion years.
O nosso Sol é uma estrela da sequência principal que permanecerá nesta fase estável por aproximadamente 10 bilhões de anos.
2. A category of stars characterized by specific relationships between their luminosity and temperature
Main-sequence stars comprise about 90% of all known stars in the universe.
As estrelas da sequência principal compõem aproximadamente 90% de todas as estrelas conhecidas no universo.
This is a specialized astronomical term used in academic and educational contexts. In Brazil, it is commonly taught in physics and astronomy courses at the university level. The term is part of international scientific vocabulary and maintains the same meaning across English-speaking and Portuguese-speaking astronomical communities.
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