main sequence
Noun
Meaning
(astronomy) A major grouping of stars represented on a Hertzsprung-Russell diagram by a nearly uniform band of increasing luminosity with increasing surface temperature.
Used other than figuratively or idiomatically: see main, sequence.
Source: en.wiktionary.orgSynonyms
Examples
About 360 times as luminous and 3.75 times as massive as the Sun, it is expanding and cooling as it ages, having spent much of its life as a main sequence star of spectrum B6V.
A mid-sized yellow dwarf star, like the Sun, will remain on the main sequence for about 10 billion years.
Because of its vastly increased surface area, the surface of the Sun will be considerably cooler (2,600 K at its coolest) than it is on the main sequence.
Astronomers will sometimes refer to this stage as "zero age main sequence", or ZAMS.
As a result, red dwarfs have estimated lifespans far longer than the present age of the universe, and stars less than 0.8 M have not had time to leave the main sequence.
Act 1 main The overture begins with a thundering D minor cadence, followed by a short misterioso main sequence which leads into a light-hearted D major allegro.