A-type star

A-type star

[′ā‚tīp ‚stär]
(astronomy)
In star classification based on spectral characteristics, the type of star in whose spectrum the hydrogen absorption lines are at a maximum. Also known as A star.
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References in periodicals archive ?
The team noticed that the same line features are also observed at SS 433, a close binary consisting of an A-type star and most probably a black hole with a mass less than 10 times that of the Sun.
We have been studying through 3-D global simulations the nature of both differential rotation and dynamo action that can be achieved in G-type stars like the sun by turbulent convection in their outer envelopes, and also by core convection in more massive A-type stars.
Researchers at the California Institute of Technology (Caltech), surveyed about 300 stars, and focussed on those dubbed "retired" A-type stars that are more than one and a half times more massive than the sun.