B star

American  

noun

Astronomy.

1. a massive, relatively hot, blue to white star, as Rigel or Spica, having a surface temperature between 10,000 and 30,000 K and with an absorption spectrum dominated by the Balmer series of hydrogen with lines of neutral helium present.

---

Example Sentences

See Examples For:

B star

A B0 star is the hottest type of B star; a B9 star is the coolest type of B star and is only slightly hotter than an A0 star.

From Textbooks ● Oct. 13, 2016

Looking at the lines in our figure, you see that the star could be either a B star or a G star.

From Textbooks ● Oct. 13, 2016

But if the spectrum also contains helium lines, then it is a B star, whereas if it contains lines of ionized iron and other metals, it must be a G star.

From Textbooks ● Oct. 13, 2016

Do these differences mean that the Sun contains more iron and less helium than the B star?

From Textbooks ● Oct. 13, 2016

Can the team now use that, plus a bunch of zeroes, to land an attractive Plan B star, plus a supporting cast?

From Washington Post ● Jun. 29, 2016

Random Word

Spin the wheel and learn a new word!

---