Vega-excess star

Vega-excess star

[¦vā·gə ′ek‚ses ‚stär]
(astronomy)
A star from which is detected far-infrared emission greatly in excess of what the star alone should produce, believed to originate from a cloud of dust surrounding the star that may be analogous to the Kuiper belt dust in the solar system but has hundreds or thousands of times as much dust.