
Left: The image of the HR8799 planetary system from data taken with the Keck telescope. Right: the 1998 Hubble data (credit: NRC) (a) original Hubble image, (b) with "traditional" speckle subtraction method, (c-d) 2 images reprocessed showing the planet above the noise (credit: Lafrenière et al., 2009).
An interesting paper turned up on astro-ph last week. Remember HR8799, the star with a whole family of exoplanets imaged directly last year? A Canadian-American team of scientists went back through the archive and re-analysed data taken with the Hubble Space Telescope in 1998. And lo and behold, using new analysis techniques they managed to tease the outermost of HR8799′s planets out of the noise. Very cool. After all, 1998 was only three years after the first ever detection of an exoplanet! Obtaining a direct image of one really was just a glint in our starry eyes back then.



Connect