A-type star
(A)
(type of star with about 2 times the mass of the Sun)
An A-type star is a star in the A-class, a
spectral class for stars of around 2 solar masses
and 2 times solar radius.
They burn up their hydrogen in a few hundred million years.
They have strong hydrogen absorption lines.
Characteristics:
(star type,spectral type)
http://en.wikipedia.org/wiki/Stellar_classification
| WaveL | Freq | Photon
Energy | | |
| 145nm | 2.1PHz | 8.6eV | begin | A-type star |
| 290nm | 1.1PHz | 4.3eV | end | A-type star |
|
Referenced by:
Am star
Ap star
Balmer jump
Balmer-break galaxy (BBG)
Be star
globular cluster (GC)
Hyades Cluster
Markarian galaxy (Mkn)
Morgan classification
red giant
RR Lyrae variable
star formation rate (SFR)
spectral class
SS 433
TW Hydrae association (TWA)
velocity-metallicity relation
index