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
UBVRI photometric system
WASP-33b
WR 104
Index