B-type star
(B, B-class star)
(star with spectral characteristics of around 10000-30000 K)
A B-type star is a star within the B-class,
a spectral class indicating stars with neutral helium
and moderate hydrogen absorption lines,
a blue-white color,
and a surface temperature in the general range of 10,000 K to 30,000 K.
The spectral energy distribution (SED) peaks in the ultraviolet.
Main sequence stars of this class are on the order of
10 solar masses, 5 times solar radius, and hundreds to tens-of-thousands
times as bright as the Sun.
Such main sequence stars
burn their hydrogen on the order of a hundred million years.
Characteristics of B-type main sequence stars:
Blue giants (and blue supergiants) are very hot giant stars,
which can fall within this temperature range and within the B-class.
Example B-type stars are Achernar, Algol, Beta Centauri
(pair of giant stars), and Rigel (includes a supergiant).
(star type,spectral class)
Further reading:
https://en.wikipedia.org/wiki/Stellar_classification#Class_B
https://en.wikipedia.org/wiki/B-type_main-sequence_star
https://en.wikipedia.org/wiki/Blue_giant
http://hyperphysics.phy-astr.gsu.edu/hbase/Starlog/staspe.html#c4
https://chview.nova.org/solcom/stars3/100-bs.htm
https://lweb.cfa.harvard.edu/~pberlind/atlas/htmls/bstars.html
WaveL | Freq | Photon Energy | | |
97nm | 3.1PHz | 13eV | begin | B-type star |
145nm | 2.1PHz | 8.6eV | end | B-type star |
|
Referenced by pages:
Achernar
Ap star
BA supergiant
Be star
BEAST
Beta Centauri
giant star
Gould's Belt
helium star
Herbig AeBe star (HAeBe)
hypergiant
LB-1
OB association
OB star
Orion
Pleiades (M45)
red giant
red-giant branch (RGB)
shell star (sh)
slowly-pulsating B-star (SPB)
spectral class
star formation rate (SFR)
stellar association
stellar wind
subdwarf (sd)
variable star
WR 104
young stellar object (YSO)
Index