A-type star
(A, A-class star)
(star with spectral characteristics of around 8500 K)
An A-type star is a star within the A-class,
a spectral class indicating stars with strong hydrogen
absorption lines, a white color
and a surface temperature in the range of 7,500 to 10,000 K.
The spectral energy distribution peaks in the visible/near ultraviolet range.
Main sequence stars of this class are on the order of
2 solar masses, 2 times solar radius and 10 times as bright
as the Sun.
Such main sequence stars
burn their hydrogen on the order of a billion years.
Characteristics of A-type main sequence stars:
Example A-type stars are Canopus (a supergiant),
HR 8799, Sirius A and Vega.
(star type,spectral class)
Further reading:
https://en.wikipedia.org/wiki/Stellar_classification#Class_A
http://en.wikipedia.org/wiki/A-type_main-sequence_star
WaveL | Freq | Photon Energy | | |
145nm | 2.1PHz | 8.6eV | begin | A-type star |
290nm | 1.1PHz | 4.3eV | end | A-type star |
|
Referenced by pages:
Am star
Ap star
Balmer jump (BJ)
Balmer-break galaxy (BBG)
Be star
Canopus
globular cluster (GC)
Herbig AeBe star (HAeBe)
Hyades Cluster
hypergiant
Lambda Boötis star (λ Boo)
Markarian galaxy (Mkn)
Morgan classification
red giant
RR Lyrae variable (RRL)
star formation rate (SFR)
spectral class
SS 433
stellar demographics
TW Hydrae association (TWA)
WASP-33b
Index