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 (SED) 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
solar luminosity.
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 the supergiant, Canopus,
the protostars, AB Aurigae and MWC 758,
and the main sequence stars, HR 8799, Sirius A and Vega.
(star type,spectral class)
Further reading:
https://en.wikipedia.org/wiki/Stellar_classification#Class_A
https://en.wikipedia.org/wiki/A-type_main-sequence_star
https://www.astro4edu.org/resources/glossary/term/1/
https://lweb.cfa.harvard.edu/~pberlind/atlas/htmls/astars.html
https://chview.nova.org/solcom/stars3/100-as.htm
| 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:
Achernar
Am star
Ap star
BA supergiant
Balmer jump (BJ)
Balmer-break galaxy (BBG)
Be star
Beta Pictoris b (β Pic b)
Canopus
convection zone
globular cluster (GC)
Herbig AeBe star (HAeBe)
Hyades Cluster
hypergiant
Lambda Boötis star (λ Boo)
Markarian galaxy (Mkn)
Morgan classification
post-starburst galaxy (PSB galaxy)
red giant
RR Lyrae variable (RRL)
spectral class
SS 433
star formation rate (SFR)
stellar demographics
TW Hydrae association (TWA)
UBV photometric system
WASP-33b
WR 104
Index