Noisy star masks planet's true size

Discussion in 'Optometry Archives' started by cyber news, Aug 10, 2009.

  1. cyber news

    cyber news Guest

    Astronomers observing exoplanets around other stars may be
    underestimating their size, according to a German study.

    The researchers believe the error may be due to active stars adding
    'noise' to the observation of exoplanets using the transit method.

    Their study appears on the electronic preprint website arXiv.

    The transit method detects exoplanets as they pass in front of their
    parent star, reducing the amount of light reaching telescopes on, and
    orbiting, Earth.

    Although the transit method isn't the best method for detecting
    exoplanets, it provides a reliable estimate of its size and mass.
    cyber news, Aug 10, 2009
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